mdh.sePublications
Change search
Refine search result
1 - 25 of 25
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Abid, Ali
    et al.
    Mälardalen University, Department of Innovation, Design and Product Development. Mälardalen University, School of Innovation, Design and Engineering.
    Roback, Joel
    Mälardalen University, Department of Innovation, Design and Product Development.
    Produktutveckling för Cate & Nelson Design: Framtagning av möbel2008Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Denna rapport behandlar examensarbete utfört för industridesignföretaget Cate & Nelson Design. Företaget ligger i Eskilstuna och jobbar i huvudsakligen med möbeldesign och inredningsprodukter. Projektgruppensuppgift har varit att ta fram en ny möbel för företaget och arbetet har omfattat utveckling av hela produkten från idé till prototyp.

  • 2.
    Alamerison, Seif
    et al.
    Mälardalen University, School of Sustainable Development of Society and Technology.
    Tarek, Karzan
    Mälardalen University, School of Sustainable Development of Society and Technology.
    Samverkanspelare i icke bärande fasadelement2009Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Abstract

    The tests work is about the subject "synergism of steel and concrete."

    The construction sector is in a strong competition and the different companies in the Prefab

    Market has ever tried to develop new design solutions that are efficient and environmentallyfriendly.

    The purpose of this report is to highlight different aspects of interaction and size up a columndimension and to examine its efficiency and load capacity as Eurocode 3 and Eurocode 4. A sizing chart that describes the relationship between the torque and normal force shouldalso be made of the interaction .

     

  • 3.
    Bengtsson, Marcus
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Fundin, Anders
    Mälardalen University, School of Innovation, Design and Engineering.
    Deleryd, Mats
    Mälardalen University, School of Innovation, Design and Engineering.
    Salonen, Antti
    Mälardalen University, School of Innovation, Design and Engineering.
    Olsson, Erik
    Mälardalen University, School of Innovation, Design and Engineering.
    Funk, Peter
    Mälardalen University, School of Innovation, Design and Engineering.
    Andersson, Carina
    Mälardalen University, School of Innovation, Design and Engineering.
    Qureshi, Hassan
    Mälardalen University, School of Innovation, Design and Engineering.
    Integrating Quality and Maintenance Development: Opportunities and Implications2010In: Proceedings of the 23rd International Congress on Condition Monitoring and Diagnostic Engineering Management (COMADEM 2010): Advances in Maintenance and Condition Diagnosis Technologies towards Sustainable Society / [ed] S. Okumura, T. Kawai, P. Chen, and R. B. K. N. Rao, 2010, p. 821-828Conference paper (Refereed)
    Abstract [en]

    Today, the drive in many organizations is to focus on reducing production costs while increasing customer satisfaction. One key to succeed with these goals is to develop and improve both quality and maintenance in production as well as quality and maintenance in early phases of the development processes. The purpose of this paper is to discuss how and motivate why research within quality and maintenance development may interact, in order to help companies meet customer demand while at the same time increase productivity. The paper is based on ideas and research perspectives of the newly formed competence group on ‘Quality- and Maintenance Development’ at the School of Innovation, Design and Engineering at the Malardalen University, Sweden. This paper elaborates on the concepts of Quality and Maintenance, its important integration, and provides some examples of ongoing research projects within the competence group.

  • 4.
    Eriksson, Christian
    Mälardalen University, School of Innovation, Design and Engineering.
    Design Av Produktdisplay För Butik2009Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Detta projekt har haft som mål att utveckla produktdisplayer för användning i butiker i syfte att exponera produkter som smycken, solglasögon eller liknande. Projektet är utfört som ett examensarbete vid Mälardalens Högskola inom produktutveckling med inriktning formgivning.

    Bakgrunden till projektet är att företaget X-ponent vill utforska en ny marknad. Det vill säga konsumentmarknaden istället för sin vanliga inriktning på industri. X-ponent har fått förfrågningar om produktdisplayer av mindre tillverkare av smycken och säljer idag en enkel variant till dessa.

    Uppdraget har gått ut på att ta fram tre koncept på produktdisplayer ett med ett eget användningsområde; en väggdisplay, för att kunna användas vid vägg; en golv display, för användning på golvet i butiken; och en bordsdisplay, att kunna ställa på bord eller disk. Displayens syfte skulle vara att exponera produkten och locka folk att köpa varför konsument psykologi och marknadsföring i butik studerades. Även semiotik spelade stor roll i konceptens formgivning och studerades noga.

    För att ta reda på marknadens krav och egenskaper användarna ansåg vara bra och dåligt med dagens produkter utfördes en marknadsundersökning i butikerna i Tuna Park i Eskilstuna och på Dustins Elektronikmässa i Annexet i Stockholm. Även en utförlig konkurrensanalys utfördes på konkurrerande produkter.

    Under projektets gång har ett flertal produktutvecklings verktyg används som, funktionsanalys, FEMA och CAD (genom SolidWorks). Arbetsmetoden har varit att ta fram en mängd olika koncept för att sedan metodiskt sålla bort, förbättra och tillslut välja ut slutgilltliga koncept.

    För att göra bästa möjliga val använde jag mig av flera beprövade verktyg. Som Beslutsmatriser, PUGH och QFD. Utöver dessa verktyg hade jag flera diskussioner med uppdragsgivare och handledare.

    En viktig del har varit att presentera koncept som både uppfyller marknadens och uppdragsgivarens krav samtidigt som det är så hållbart för miljön som möjligt. för att göra detta möjligt studerades "sustainable design" (hållbar design).

    De slutgiltiga koncepten presenterades som renderade bilder. Dessa renderades i programmet 3D-Studio max. En säljande produktfolder skapades för att ge koncepten extra tyngd. Även en modell av väggkonceptet togs fram.

  • 5.
    Felderer, M.
    et al.
    University of Innsbruck, Innsbruck, Austria; Blekinge Institute of Technology, Karlskrona, Sweden.
    Gurov, D.
    KTH Royal Institute of Technology, Stockholm, Sweden.
    Huisman, M.
    University of Twente, Enschede, Netherlands.
    Lisper, Björn
    Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
    Schlick, R.
    AIT Austrian Institute of Technology, Seibersdorf, Austria.
    Formal methods in industrial practice - Bridging the gap (track summary)2018In: Lect. Notes Comput. Sci., Springer Verlag , 2018, Vol. 11247, p. 77-81Conference paper (Refereed)
    Abstract [en]

    Already for many decades, formal methods are considered to be the way forward to help the software industry to make more reliable and trustworthy software. However, despite this strong belief, and many individual success stories, no real change in industrial software development seems to happen. In fact, the software industry is moving fast forward itself, and the gap between what formal methods can achieve, and the daily software development practice does not seem to get smaller (and might even be growing).

  • 6.
    Fridholm, Victoria
    Mälardalen University, School of Innovation, Design and Engineering.
    IMPROVE MAINTENANCE EFFECTIVENESS AND EFFICIENCY BY USING HISTORICAL BREAKDOWN DATA FROM A CMMS: Exploring the possibilities for CBM in the Manufacturing Industry2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Purpose: Explore how historical data from a CMMS can be used in order to improve maintenance effectiveness and efficiency of activities, and investigate the possibilities for CBM in the manufacturing industry in the context of digitalization. 

    Research questions: RQ1: To what extent could condition-based maintenance or other maintenance types being used in order to predict, prevent or in other way eliminate historical breakdowns/faults? 

    RQ2: Which significance has an organization's degree of maturity to reduce the number of breakdowns? 

    Method: A case study was performed at Volvo Construction Equipment Operations in Eskilstuna, who manufactures machinery for the construction industry. The case study was compiled in two phases. Phase one was a quantitative study where raw data were collected from a CMMS and tabulated in order to later perform in-depth analysis. Phase two was designed to collect information that generated a wider understanding of the research area, by performing interviews and observations. A literature study was performed to compare the empirical findings with peer-reviewed information to ensure the quality of the study. The data is compiled and analyzed with an abductive approach. The analysis was followed by a discussion of how the research findings could support identifying possibilities of different maintenance types in the future. 

    Conclusion: The result showed that using historical breakdown data from a CMMS can be useful in order to identify organization’s current state and what possibilities different maintenance types have to decrease the number of breakdowns. To what extent the breakdowns can be decreased relies not only on the maintenance type but also an organizations maturity level. The case study´s result showed that by combining different maintenance types and increasing degree of maturity, Volvo could decrease the historical breakdowns with 86,5%. By only using CBM with current maturity level, 56% of the historical breakdowns could be predicted. However, to decide how many breakdowns that is cost-effective to prevent and precisely what maintenance type that should be used requires a cost analysis which this study is not covering. 

  • 7.
    Gopalakrishnan, Maheshwaran
    et al.
    Chalmers Univ Technol, Dept Ind & Mat Sci, Gothenburg, Sweden..
    Skoogh, Anders
    Chalmers Univ Technol, Dept Ind & Mat Sci, Gothenburg, Sweden..
    Salonen, Antti
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Asp, Martin
    Volvo Grp Truck Operat, Skövde, Sweden..
    Machine criticality assessment for productivity improvement Smart maintenance decision support2019In: International Journal of Productivity and Performance Management, ISSN 1741-0401, E-ISSN 1758-6658, Vol. 68, no 5, p. 858-878Article in journal (Refereed)
    Abstract [en]

    Purpose The purpose of this paper is to increase productivity through smart maintenance planning by including productivity as one of the objectives of the maintenance organization. Therefore, the goals of the paper are to investigate existing machine criticality assessment and identify components of the criticality assessment tool to increase productivity. Design/methodology/approach An embedded multiple case study research design was adopted in this paper. Six different cases were chosen from six different production sites operated by three multi-national manufacturing companies. Data collection was carried out in the form of interviews, focus groups and archival records. More than one source of data was collected in each of the cases. The cases included different production layouts such as machining, assembly and foundry, which ensured data variety. Findings The main finding of the paper is a deeper understanding of how manufacturing companies assess machine criticality and plan maintenance activities. The empirical findings showed that there is a lack of trust regarding existing criticality assessment tools. As a result, necessary changes within the maintenance organizations in order to increase productivity were identified. These are technological advancements, i.e. a dynamic and data-driven approach and organizational changes, i.e. approaching with a systems perspective when performing maintenance prioritization. Originality/value Machine criticality assessment studies are rare, especially empirical research. The originality of this paper lies in the empirical research conducted on smart maintenance planning for productivity improvement. In addition, identifying the components for machine criticality assessment is equally important for research and industries to efficient planning of maintenance activities.

  • 8.
    Grönlund, Kristian
    Mälardalen University, School of Innovation, Design and Engineering.
    Utveckling av heltäckande gångbord2009Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis work is a 30hp D-level assignment in design as a co-operation between MälardalenUniversity and Scania CV AB in Södertälje. The purpose was to develope a close fitted catwalk.The market has seen an increasing value for these types of applications and have the ambition to keep up with the rest of the competitors. The catwalks of todays standards shall be estetical attractive, have a non slippery surface and be costefficient.While working with this project I have spent a lot of time with the concept proposals and with the evaluation of the concepts, resulting in a final CAD model and a approximation of the cost estimate. The new catwalk fulfils all the new recommendations and rules as sharp edges, ADR, the height of the stepup and a non slippery surface with built in drainage.

  • 9.
    Hyttsten, Andreas
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Alm, Sebastian
    Mälardalen University, School of Innovation, Design and Engineering.
    Integrering av ToolTracker i X-ponentskåp2010Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The following thesis report describes the development that intended to combine two existing products from X-ponents Stålinredningar AB, the orderliness-system ToolTracker and a tool cabinet named X-102.

    This development lasted during the course KPP305, Examensarbete Produktutveckling, at Mälardalen University.

    The outsourcer X-ponent Stålinredningar AB had during a period of time developed an orderliness-system and through a demand from the market, the company felt the need to further develop this product and place the product in a cabinet.

    This product would give the user the opportunity to log on to the system via a RFID-reader placed on the front of the cabinet, and when the approved login appears the cabinet unlocks automatically and the user gets access to the tools placed in the cabinet. If the user chooses to check out a tool then the time and id for the user gets saved in the database to enable tracking of the tool.

    The terms that the company stated for the project was that the original ToolTracker-system should work in the same way, this meant that no work on the ToolTracker-system should be done.

    The problems that would be solved were hence how the components of the ToolTracker-system would be placed inside the cabinet, and how the locking mechanism should be designed to fulfill the demands put on the product. The most important functions that had to be implemented was that the lock should unlock itself automatically when an approved login happened, the locking mechanism also had to lock itself when the door is shut, and the user should also be able to unlock the door by manual force. These demands and more where written in the technical specifications list and became the foundation of this development. An important demand during the entire development process was that the cabinet should be modified as little as possible.

    As the demands clarified a quantity of ideas could take form and develop into concepts. These concepts were thereafter moved through a process were these concepts were developed and then criticized by their feasibility. Thereafter the concepts were evaluated and one final concept could be chosen as a result from these operations. The final draft meets the demands put on functions as well as the modifications on the original cabinet, which were big contributions why this concept were chosen. Thereafter a 3D-model of the construction was made in SolidWorks, this was done to answer the final questions about the assembly and such.

    The final draft possesses an electric strike plate that is unlocked when a signal is sent to it. This signal is sent from the RFID-reader when a login takes place. The automatic locking takes place when the barrier is affected by the door shutting. To open the door manually the user uses the existent espanjolett.

    The analysis of the result states that de final solution fulfills the demands put on the product and also solves the formulated problems which this project where based on. The goal can therefore be stated as reached.

    The conclusion for this project is that the development work fulfilled the goals put. A physical prototype should also be manufactured to verify that the theoretical concept matches reality in a satisfied manner.

  • 10.
    Jarl, Robin
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Hellsing, Robin
    Mälardalen University, School of Innovation, Design and Engineering.
    Konstruktion av MC-släp2009Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Denna rapport beskriver ett projekt där målet är att skapa konstruktionsunderlag för en prototyp avett MC‐Släp, en släpvagn som dras av en motorcykel. Prototypen skulle testas med avseende påhållfasthet genom datorsimulering. Prototypen skulle också kunna användas för utställningsändamål.

    Projektet fortlöpte i huvudsak under höstterminen 2008 och är ett examensarbete för Civilingenjörinom Produktutveckling på Mälardalens Högskola.

    Uppdragsgivaren Nyzells MetallGjuteri AB hade en idé om ett egentillverkat MC‐släp som med smartuppbyggnad kan kombineras i många variationer och på så sätt ha en konkurrensfördel på marknaden.Deras kompetens inom aluminiumgjutning gjorde att de valde att släpet till stora delar skulle gjutas ialuminium, något som är unikt för denna slags produkt. Då gjutningen sker med sandgjutning så finnsstora möjligheter att anpassa varje släp och göra dessa unika utifrån specifika kundönskemål.

    Projektets mål att skapa ett konstruktionsunderlag för en prototyp, styrdes av ett antal krav frånuppdragsgivaren, men även från Vägverkets författningar. Krav på funktionalitet och viss utformningställdes av uppdragsgivaren, därtill kom krav på storlek och vikt ställda av Vägverket.

    Direktiven var att ta fram konstruktionsunderlag för två olika varianter av släp, både ett vanligttvåhjuligt släp och ett mer ovanligt enhjuligt släp. Det enhjuliga släpet kan med en fast koppling tillmotorcykeln framföras i frifart, endast begränsad av hastighetsbegränsningen som gäller. Till dessavarianter skulle två olika stilar på kåpor tas fram, en som passar glidarmotorcyklar och en som passartouringmotorcyklar. Till dessa kåpor skulle även matchande skärmar tas fram.Hjulupphängningen skulle vara av enkel typ och endast fjädrade med gummikuddar. Detta för att hållanere kostnaden och antalet delar i konstruktionen. Det finns inga krav från någon myndighet att släpskall vara fjädrade.

    Ett antal koncept togs fram av helhetsstilen för släpet och därefter valdes det bästa konceptet.Konceptet delades upp i ett antal olika delsystem och till varje delsystem togs ett grundkoncept frampå en eller flera lösningar. Dessa koncept utvecklades till färdiga delsystem. Därefter specificeradesdelsystemen och en konstruktionsplan gjordes. Därefter fick varje del en översikt på detaljnivå och allamått och toleranser sattes när delarna ritades från grunden i SolidWorks.

    Resultat blev en välbyggd prototyp som fungerar väl som utställningsföremål för att visa upp hurslutprodukten kommer att se ut och vara uppbyggd. Uppdragsgivaren uppskattade resultatet väldigtmycket.

    Analysen visar att alla delar uppfyller de krav och målvärden som fanns, inom rimliga gränser ochmålet för projektet kan anses uppnått.

    Slutsatsen var att arbetet gick bra, då projektet uppnådde sitt mål. Dock måste det poängteras tilluppdragsgivaren att tester av prototypen är mycket viktiga och det finns saker uppdragsgivaren måstese över innan en produktion kan starta.

  • 11.
    Kuduzovic, Lejla
    Mälardalen University, School of Innovation, Design and Engineering.
    Förslag till framtagning av kvalitetssäkringsrutiner för induktionshärdade drivaxlar vid Volvo CE Component Division: Examensarbete, produktutveckling, 30 poäng Avancerad nivå2008Independent thesis Advanced level (degree of Master (One Year)), 20 points / 30 hpStudent thesis
    Abstract [sv]

    Detta examensarbete har handlar om att ta fram kvalitetssäkringsrutiner för induktiva värmebehandlingsmetoder mot det nya mätlabbet i samband att kvalitetssäkra produktionen av drivaxlar på Volvo Component Division. Uppgiften betyder att visa hur kvalitetssäkringen av både processen och tillverkningen ska ske genom att förebygga att fel uppstår. Huvudsaken är inte hur problemet blir löst, istället kommer koncentration lagts på metoden.

     

    Det övergripande syftet med examensarbetet är att försöka hjälpa personalen i företaget komma fram till förslag och konkreta resultat i form av kvalitetssäkringsrutiner för att förbättra både produktionen och den befintliga produktutvecklingsprocessen.

    Främsta målet är att bygga upp en fungerande kvalitetssäkring av induktiv värmebehandling inom Component Division genom att ta fram kvalitetssäkringsrutiner som stödjer metoden. Dessa rutiner skall bygga på önskemål från kunden, detta framför allt i form av beställningsblanketter, instruktioner och checklistor.

     

    Volvo Construction Equipment AB Component Division Eskilstuna arbetar idag med en kontinuerlig process- och produktförbättring med avseende på att förebygga eventuella kvalitetsbristerna. Meningen är att man i samband med den nya utbyggnaden av fabriken, nya maskiner och ny utrustning också ska bygga ett nytt materiallabb där materialprovbitar skall kunna skickas in av operatören/teknikern för olika kvalitetsundersökningar.

    I dagsläget har man börjat producera drivaxlar enligt den nya flödesgruppen vars förutsättning är att artiklarna skall tillverkas från råämne till monteringsklara detaljer. För att få ut ett smidigt produktionsflöde och optimera produktionen inom flödesgruppen måste alla parametrar och faktorer stämma på båda sidorna. Detta fås genom ständiga förbättringar samt statistiska styrningar av processen genom kontroller, underhåll och uppföljningar.

     

    Examensarbetet har till följd därav resulterat i instruktioner som beskriver kontrolleringar och provtagningar av värmebehandlade artiklar i cell07 som en åtgärd för att bygga en fungerande kvalitetssäkring av induktionshärdade artiklar på CMP. För att detta kvalitetsarbete skall ge resultat bör operationsbeskrivningen mätinstruktioner följas av samtliga på avdelningen.

    Därför är det viktigt att när ett kvalitetsproblem väl har identifierats skall nästa steg vara att gå vidare med att försöka bena ut orsakerna till problemet och hitta lösningar till dessa för att undvika eller förebygga att samma sak händer nästa gång.

     

  • 12.
    Källung, Patrik
    et al.
    Mälardalen University, School of Sustainable Development of Society and Technology.
    Staaf, Pontus
    Mälardalen University, School of Sustainable Development of Society and Technology.
    Eurocodes: Beräkningsjämförelser mellan eurocodes och BKR2008Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In the year 2010 a transition will take place here in Sweden from the present rules how to dimension buildings in to the common rules with have been developed in Europe, the Eurocodes. Eurocode is the term for a collection standard that contains calculation rules in how to dimension constructions and buildings. They are developed by the European standardize committee.

    The purpose with this examination work is to get an insight of what changes this will contribute to, and how it will affect the dimensioning. Are there going to be any differences in the dimension you finally chose?

    To investigate these possible differences two constructions will be calculated first in the present Swedish rules, and then in the coming eurocodes.

    One of these two constructions will be build completely in steel, while the other will be build completely in concrete. The steel building will have a beam and a column dimensioned, the concrete building will likewise have a beam and a column dimensioned. To reach as equivalent comparison as possible will the same load, geometry and circumstance prevail for both standards. Limitation has been done to only dimensioning the beam and the column who is most charged.

    After we performed the calculations we could make the conclusion that dimensioning with Eurocode a higher efficiency was received, a 10 % higher efficiency on the materials. The strength of the material is with calculations with Eurocode higher, and so are the loads. One of the reasons for this is that the securityclass is added to the loads in Eurocodes and are drawn off from the strength of the materials in BKR.

  • 13.
    Memic, Zijah
    Mälardalen University, School of Innovation, Design and Engineering.
    Kartläggning av reparationsprocessen på Westermo Teleindustri AB: Identifiering av slöserier och förslag till förbättringar2014Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report is the result of a thesis performed at Westermo Industrial Ltd with its headquarters in Stora Sundby and it sums up the author's studies for University Engineering in Innovation, Production and Logistics at Mälardalen University.

    The main goal of the thesis was to identify problems and suggest actions that lead to the reduction of the repair time from 3 weeks to 2 weeks. The key questions that were answered in order to achieve the thesis objectives are:

     

    What are the biggest challenges that make the repair process time last for 3 weeks?

     

    What are the necessary means and measures in order to reduce the repair length to 2 weeks?

     

    The author adjusted the work to the Swedish repairs, repair issues that arise from sell unit Westermo Data Communications AB with its office in Västerås and performed the status report by mapping the repair process, through using observations, interviews and bibliography research studies. A flow map of four sub-processes (Inbound Delivery, BackOffice, Repair Department, and Logistics) was made and each section was observed, where also the employees were interviewed. Data that has been collected was analysed by the author and the decision to execute a workshop that affects Repair Department and Logistics was made. Consequently to this, these two services will prove to have the greatest impact on repair time.

     

    It is notified that the main reason for the repair process length today is so long is due to the fact that the owner of the repair process does not exist, which leads to so many unanswered questions and unclearness through the whole process, which occur and result in the situation where the process does not work as a whole, but each sub-process is acting separately on its own. Problems also arise because of the persons that are bound to the process, where both engineers at repair department are specialized in their own field and cannot perform the second engineer's work. Furthermore, due to the incomplete description that is usually provided by the customers, makes even more difficult to define the problem, which is yet another reason why the repair time is so long today.

     

    The suggestions for improvement that are recommended, in the first place to reduce the length of the repair process - is to create an entirely new position within repair process – the owner. In order to correct the deficiency with incomplete error descriptions from the clients, they should introduce network-based fault reports, which contain a number of mandatory fields that the customer must fill out in order to describe the problem and the conditions that existed when the fault with their unit occurred. This would simultaneously also eliminate the waiting length on the warranty of the unit if it is not applicable, and a response regarding that particular repair for the customer. Furthermore, training of repair engineers should be initiated for them, so they will be able to fix all units coming in for repair. The key objective here is to reduce the waiting length when the unit is on wait to be treated by the "right" engineer.

     

    In future, with the aforementioned, and other improvement proposals that are developed and explained in this report, repair time can be significantly reduced, which will further on improve the entire repair process.

  • 14.
    Morberg, Christin
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Öhlin, Sara
    Mälardalen University, School of Innovation, Design and Engineering.
    Byggstenar för Husmuttern inför en ISO 9001-certifiering: Ett underlag för hur små och medelstora företag ska kunna påbörja en implementering av kvalitetsledningssystemet2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Denna studie är en slutlig undersökning av ett examensarbete som skrevs under hösten 2017 på Mälardalens högskola av två ingenjörsstudenter. Studien berör hur ett fallföretag i framtiden ska kunna genomföra en ISO-certifiering, vilket kommer att ge byggstenar till företaget för hur en implementering skulle kunna genomföras. Med hjälp av ISO-standardens sju grundprinciper – kundfokus, ledarskap, medarbetarnas engagemang, processinriktning, förbättring, faktabaserade beslut och relationshantering – ger det företaget en stabil grund att stå på, samt förutsättningar för att kunna införa ett kvalitetsledningssystem.

    Studien kommer att besvara problemformuleringen ”Att definiera glappet mellan ISO-standarden och fallföretaget.” Problemformulering är alldeles för övergripande för studiens tidsram och innefattar för stort arbete och har därför delats in i två mindre frågeställningar:

    1. Vilka utmaningar ställs små och medelstora företag, såsom Husmuttern, inför vid en implementering av ISO 9001?

    2. Hur kan små och medelstora företag hantera utmaningarna att bli ISO-certifierade?

    Informationen till studien har funnits med hjälp av en litteraturstudie och intervjuer för att få fram de byggstenar fallföretaget behöver inför deras framtida implementering. Litteraturstudien har bland annat bestått av artiklar, böcker och den internationella, officiella standarden ISO 9001:2015 för en ISO-certifiering. Intervjuerna har kvalitativt genomförts med semistrukturerade frågor tillsammans med fallföretagets VD, samt med VD:n på Mektig Technology Group. För att kunna genomföra studien användes en rekommenderad arbetsprocess på fyra steg från handboken ISO 9001 för små och medelstora företag (Bowin, 2002).

    Studiens teori har tillsammans med fallföretagets nulägesanalys sammanfattats i bland annat den fortsatta rekommendationen att fallföretaget ska påbörja en dokumentation av alla deras arbetsprocesser och policys inom företaget. Ytterligare rekommendationer består av att fallföretaget tar hjälp av extern hjälp, såsom utbildningar och kurser. Extra viktigt, som studien kommit fram till är att en implementering av en ISO-certifiering bör vara väl genomtänkt och planerat då det är både tidskrävande och kostsamt för ett företag att genomföra.

    En ISO-certifiering är väldigt tidskrävande och därför har endast denna studie kommit med underlag för hur fallföretaget skulle kunna genomföra en ISO-certifiering. Eftersom detta endast är ett underlag behöver fortsatta studier och rekommendationer, som nämnts ovan, genomföras.

  • 15.
    Nåhdin, Rickard
    Mälardalen University, School of Innovation, Design and Engineering.
    Arrestor Hook för JAS 39 Gripen2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    SAAB AB är intresserad av att kunna utrusta JAS 39 Gripen med en "Arrestor Hook" då denna typ av nödbromssystem är vanligare i andra flygvapen än det system som svenska flygvapnet använder. Uppgiften var att göra ett konstruktionsförslag av denna "Arrestor Hook" bom och krok för kommande arbete.

    För att göra detta förslag valdes att dela upp arbetet i fyra steg, faktainsamlig, konceptframtagande, konceptval och bearbetning.

    Valet av vilka detaljer som skulle ingå i förslaget var böjd bom med med fast krok. På kroken monterades en släpsko för att underlätta fångandet av vajern och att tjäna som den detalj som skyddar kroken från slitage som uppstår mellan "Arrestor Hook" och banbeläggning. För att tillgodose alla krav på rörlighet som behövs på "Arrestor Hook" utrustas den med en leddetalj som ger tvåfrihetsgrader vilket även ger ett mindre moment på konstruktionen när vajern är fångad.

    Resultatet av den teoretiska analysen av de fyra förslagen visar att alla de uppsatta kraven kan mötas, dock behövs mer utvärdering och tester för att säkerställa detta. Ytterligare litteratur kring tillvägagångssättet att konstruera "Arrestor Hook" bör också tillföras för fortsatt arbete.

  • 16.
    Rastegari, Ali
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Condition Based Maintenance in the Manufacturing Industry: From Strategy to Implementation2017Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The growth of global competition has led to remarkable changes in the way manufacturing companies operate. These changes have affected maintenance and made its role even more crucial for business success. To remain competitive, manufacturing companies must continuously increase the effectiveness and efficiency of their production processes. Furthermore, the introduction of lean manufacturing has increased concerns regarding equipment availability and, therefore, the demand for effective maintenance. That maintenance is becoming more important for the manufacturing industry is evident in current discussions on national industrialization agendas. Digitalization, the industrial internet of things (IoT) and their connections to sustainable production are identified as key enablers for increasing the number of jobs in industry. Agendas such as “Industry 4.0” in Germany and “Smart Industry” in Sweden are promoting the connection of physical items such as sensors, devices and enterprise assets, both to each other and to the internet. Machines, systems, manufactured parts and humans will be closely interlinked to collaborative actions. Every physical object will formulate a cyber-physical system (CPS), and it will constantly be linked to its digital fingerprint and to intensive connection with the surrounding CPSs of its on-going processes.

    That said, despite the increasing demand for reliable production equipment, few manufacturing companies pursue the development of strategic maintenance. Moreover, traditional maintenance strategies, such as corrective maintenance, are no longer sufficient to satisfy industrial needs, such as reducing failures and degradations of manufacturing systems to the greatest possible extent. The concept of maintenance has evolved over the last few decades from a corrective approach (maintenance actions after a failure) to a preventive approach (maintenance actions to prevent the failure). Strategies and concepts such as condition based maintenance (CBM) have thus evolved to support this ideal outcome. CBM is a set of maintenance actions based on the real-time or near real-time assessment of equipment conditions, which is obtained from embedded sensors and/or external tests and measurements, taken by portable equipment and/or subjective condition monitoring. CBM is increasingly recognized as the most efficient strategy for performing maintenance in a wide variety of industries. However, the practical implementation of advanced maintenance technologies, such as CBM, is relatively limited in the manufacturing industry.

    Based on the discussion above, the objective of this research is to provide frameworks and guidelines to support the development and implementation of condition based maintenance in manufacturing companies.  This thesis will begin with an overall analysis of maintenance management to identify factors needed to strategically manage production maintenance. It will continue with a focus on CBM to illustrate how CBM could be valued in manufacturing companies and what the influencing factors to implement CBM are. The data were collected through case studies, mainly at one major automotive manufacturing site in Sweden. The bulk of the data was collected during a pilot CBM implementation project. Following the findings from these efforts, a formulated maintenance strategy is developed and presented, and factors to evaluate CBM cost effectiveness are assessed. These factors indicate the benefits of CBM, mostly with regard to reducing the probability of experiencing maximal damage to production equipment and reducing production losses, particularly at high production volumes. Furthermore, a process of CBM implementation is presented. Some of the main elements in the process are the selection of the components to be monitored, the techniques and technologies for condition monitoring and their installation and, finally, the analysis of the results of condition monitoring. Furthermore, CBM of machine tools is presented and discussed in this thesis, focusing on the use of vibration monitoring technique to monitor the condition of machine tool spindle units.

  • 17.
    Rastegari, Ali
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Strategic Maintenance Development focusing on use of Condition Based Maintenance in Manufacturing Industry2015Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    The growth of global competition caused remarkable changes in the way manufacturing companies operate. These changes have affected maintenance and made its role even more crucial in business success. In order to stay competitive, manufacturing companies need to continuously increase the effectiveness and efficiency of their production processes. Further, by introducing lean manufacturing the concern about equipment availability is increased and so, the demand for effective maintenance. Despite the increasing demand on reliable production equipment, few manufacturing companies work with strategic maintenance development. Moreover, conventional maintenance strategies such as corrective maintenance are not sufficient today to fulfill the industrial needs on maximum reduction of failures and degradations of manufacturing systems. The concept of maintenance has evolved over the last few decades from a corrective attitude (maintenance intervention after a failure), to a predictive attitude (maintenance intervention fixed to prevent the fault). Strategies and concepts such as Condition Based Maintenance (CBM) have thus evolved to support this ideal situation. CBM is a set of maintenance actions based on real-time or near real-time assessment of equipment condition, which is obtained from embedded sensors and/or external tests and measurements taken by portable equipment and/or subjective condition monitoring. CBM is becoming recognized as the most efficient strategy for carrying out maintenance in a wide variety of industries. However, the practical implementation of advanced maintenance technologies, such as CBM, in manufacturing industry is more scarce.

    Therefore, the objective with this research is to study on how to implement and develop an effective and efficient CBM strategy in manufacturing industry. This thesis will start with an analysis of the overall maintenance management to illustrate how to formulate a maintenance strategy, following with the focus on CBM; cost effectiveness of implementing CBM; an introductory review of applied CBM practices and CBM implementation process, all in manufacturing industry. The data was collected through case studies mainly at one major manufacturing site. The main part of the data was collected during a pilot project to implement CBM. As the result, a formulated maintenance strategy has been developed and presented. Factors to evaluate CBM cost effectiveness have been assessed. These factors indicate the benefits of CBM mostly in reducing probability of having maximal damage in production equipment and reducing production losses particularly in high production volumes. Further, a process of CBM implementation has been presented. Some of the main elements in the process are selection of the components to be monitored, techniques and technologies as well as installation of the technologies and finally how to analyze the results from the condition monitoring.

  • 18.
    Rastegari, Ali
    et al.
    Volvo Group Trucks Oper. Powertrain Production, Köping, Sweden.
    Bengtsson, Marcus
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Cost Effectiveness of Condition Based Maintenance in Manufacturing2015In: Reliability and Maintainability Symposium, IEEE conference proceedings, 2015, article id Article number 7105079Conference paper (Refereed)
    Abstract [en]

    This paper presents a proposed guide for analysis of the costs and benefits of implementing Condition Based Maintenance (CBM) in manufacturing industry. The guide will be exemplified with results from a case study performed in a real CBM implementation in hardening and machining processes in a large manufacturing facility. The result indicates factors that ought to be taken into consideration in order to evaluate both the cost of implementing CBM and its benefits. These factors indicate the benefits of CBM mostly by reducing the losses due to damage in the production equipment, including capital loss, production loss, quality loss, environmental loss, safety loss etc. By analyzing the empirical data, the most potential savings by implementing CBM are presented as; reducing the probability of having maximal damage in the production equipment and, reducing production losses particularly in high production volumes.

  • 19.
    Rastegari, Ali
    et al.
    Volvo GTO, Köping, Sweden .
    Bengtsson, Marcus
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Implementation of Condition Based Maintenance in Manufacturing Industry – A Pilot Case Study2014In: 2014 IEEE Conference on Prognostics and Health Management (PHM), IEEE conference proceedings, 2014, p. Article number 7036377-Conference paper (Refereed)
    Abstract [en]

    This paper presents a guide for implementation of Condition Based Maintenance (CBM) in a manufacturing industry, considering the technical constituents and organizational aspects when implementing CBM. The empirical base for the study is a case study from a major manufacturing site in Sweden. The data was collected during a pilot project to implement CBM at the case company. The purpose of the pilot study at the company was to implement online condition monitoring on some of the critical components in the hardening process. Hereby, two of the main online condition monitoring techniques namely vibration analysis and Shock Pulse Method (SPM) have been implemented and tested on electric motors to monitor bearing conditions. The paper presents the process of implementation and the elements included in this process. Some of the main elements in the implementation process are selection of the components to be monitored, techniques and technologies as well as installation of the technologies and finally how to analyze the results from the condition monitoring. The data from online condition monitoring on the electric motors, driving the furnace fans, are recorded and presented in the paper including breakdown data on two objects. This information is leading to useful and reliable knowledge for maintenance work to be cost effective and be able to increase the overall equipment availability (OEA). In addition to this, the result indicates to what extent advanced CBM practices are applicable in the hardening environment in the manufacturing company and it provides guidance for further research and development in this area. The paper concludes with a discussion on possible future trends and research areas, needed to increase the effective and efficient use of CBM.

  • 20.
    Rastegari, Ali
    et al.
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation. Volvo GTO, Köping, Sweden.
    Salonen, Antti
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation. Volvo GTO, Köping, Sweden.
    Strategic maintenance management: Formulating maintenance strategy2015In: International Journal of COMADEM, ISSN 1363-7681, Vol. 18, no 1, p. 5-14Article in journal (Refereed)
    Abstract [en]

    In recent decades, by introducing lean manufacturing the vulnerability to system disturbances has increased and so, the demand for dependable production equipment. The need for having high production equipment availability causes companies to need a more effective and efficient maintenance strategy in order to stay competitive. Despite the increasing demand on reliable production equipment, few manufacturing companies work with strategic maintenance development and a large part of the manufacturing industry lack clear maintenance strategies. It is therefore difficult to develop the maintenance work in accordance with the strategic goals of the manufacturing companies.

    The main objective of this paper is to define a process for formulating maintenance strategy in order to facilitate further development in a strategic way. The problem has been studied by literature review and through case study at one major manufacturing site in Sweden to investigate the company’s view on strategic maintenance development. Hence, a formulated maintenance strategy has been provided and presented. The company’s overall goals considered and translated to the strategic objective of maintenance. Moreover, balanced score card is used as a tool to make a framework of the maintenance strategy. As a result of this study, the company could easily formulate a maintenance strategy by using a simple process based on the tools that they have already used. In addition to this, the result indicated how maintenance strategy can contribute to the company’s business goals.

  • 21.
    Röstlund, Jessica
    Mälardalen University, Department of Innovation, Design and Product Development.
    Miljöutredning för Elisolation HTM AB2007Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [sv]

    Denna miljöutredning avser företaget Elisolation htm AB, som ingår i Söderberg företagen och är

    lokaliserat i Laxå, Närke. Företaget bedriver försäljning, tillverkning och lagerhållning av

    härdplaster och termoplaster med goda elektriska, mekaniska och temperaturegenskaper.

    Idag är ISO 14001 ett konkurrensmedel som inget företag kan bortse från. Allt fler företag

    arbetar enligt miljösystemet och ställer därför krav på att även deras samarbetspartners och

    underleverantörer gör det. Klarar du inte av att möta dina kunders krav så finns risken att de

    vänder sig till en konkurrent.

    Detta examensarbete är en miljöutredning som är en del av miljöarbete på Elisolation htm AB

    och utredningen är det första och grundläggande steget i processen med att införa ISO 14001 i

    verksamheten. Motivet med en miljöutredning är att ge en nulägesbeskrivning av Elisolation htm

    AB:s aktiviteter, verksamheter och tjänster som påverkar miljön mest och att identifiera de

    miljöaspekter som finns på företaget.

  • 22.
    Sahlander, Roland
    Mälardalen University, School of Innovation, Design and Engineering.
    Framtagande av dynamiskt VSM-verktyg: Ett utvecklingsarbete hos ABB Robotics2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    ABSTRACT

    Introduction and purpose

    Development of a VSM tool has been done by performing experimental field work at ABB Robotics, a company that mass produces industrial robots and associated accessories. The tool development, the primary part of the project, mainly puts focus on production aspects. Furthermore, it has been centered on plant layouts of the product layout kind (production line).

    The purpose of the development is to create a tailored VSM tool that auto generates a foundation for value stream maps based on calculations and possibly simple simulation. The purpose is broken down into two questions where concrete problems can be illustrated:

    A) How should the VSM tool plainly signal capacity vs. demand, time balances in production and the ratio between value and non-value adding aspects as well as intuitively promote knowledge and in a simple and fast manner be applicable to different kinds of production lines?

    B) Which constraints are placed on the potential of the VSM tool due to the current situation of the company, how does this contradict the main principles of VSM and how can the company work to maximize the tool´s potential in the future?

    Methodology and knowledge

    The development which is characterized by continuous counseling and feedback with the internal mentor is mainly based on laboratory work in Excel. In addition, the work has also involved the making of a user guide as well as an adjustable function for indicating production effects with colors. An evaluation of the tool and the user guide has also been made, which mainly is supported by a test run with the internal mentor and the nature of the methodology.

    The knowledge that the development uses as its footing mainly involves process- and value stream maps from the company, discussions with company personnel, self-performed laboratory work and theory from Rother and Shooks book “Lära sig se” (2005) and Drew. A. Locher´s book “Value Stream Mapping for Lean Development” (2008).

    Results

    The VSM tool manages, in a relevant way, to factor in all aspects that can be interpreted using a typical value stream map. In addition it also provides the following: balances between workstations and production lines, suggestions for amount of WIP between these, simple simulation of WIP between these, disturbance aspects, three total times; manufacturing lead time, inventory time and value adding time as well as a graphic illustration over production courses. The results are considered to fulfill the purpose of the project.

    Conclusion and future meaning

    The development results in a hybrid solution of sorts, a tool that exists somewhere in-between the typical draw-by-hand VSM work and simulation software. Its advantage is that it combines VSM theory with intuitive, swift and practical usage, which goes well in hand with today´s fluctuating conditions where time pressure of different kinds are present. The drawback is that the concept as a whole requires complementing in the form of Lean knowledge and gemba observations. Furthermore, there are implications associated with some types of parallel production and editing of the tool, which is to be addressed before implementation. In order to fully utilize the tool, the company also has to examine production times and make a minor adjustment to the process of collecting disturbance data. Three suggestions for the future are given; to study availability, transport aspects and the measuring of production times.

  • 23.
    Saleh, Wisam
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    El Elawi, Muhamad
    Processer för hantering av luftfartyg eller komponenter efter händelse:  2012Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 24.
    Sankaranarayanan, Vairamayil
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Maintenance – Wind Energy Production2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis investigates issues like maintenance problems, key factors, maintenance challenges, maintenance solutions and practical difficulties in wind energy. In this case, surveys and interviews have been taken from several companies and maintenance experts, to find most prevailing problems and problem-solving methods since last few years. It helps to show, how the energy maintenance has been developed in past few years. Also it analyses the impact of fourth generation maintenance in wind energy production. From research questions, key factors involved in wind energy maintenance provides us with valuable suggestions to develop the maintenance methods in future vision.

  • 25.
    Westholm, Christopher
    et al.
    Mälardalen University, Department of Mathematics and Physics.
    Magnusson, Markus
    Mälardalen University, Department of Mathematics and Physics.
    Vingkonstruktion till stor RC-modell av C-17 Globemaster2008Independent thesis Basic level (degree of Bachelor), 10 points / 15 hpStudent thesis
    Abstract [en]

    This report considers modelling of a wing to a radio controlled (R/C) model of Boeing C-17 Globemaster III. The airplane will be manufactured for sales. The wingspan is about seven meters and the airplane will probably be the currently largest R/C-plane made for sales. The report describes design proposal for a wing split, trailing and leading edge flaps, ailerons, lift dumpers, engine pylons and the selected solutions and what aerofoil the modelling started from. The report does not consider the CAD-modelling itself.

1 - 25 of 25
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf