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  • 501.
    Vafadarnikjoo, A.
    et al.
    Allameh Tabataba'i University, Tehran, Iran .
    Mobin, M.
    Western New England University, MA, United States .
    Allahi, S.
    Allameh Tabataba'i University, Tehran, Iran .
    Rastegari, Ali
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    A hybrid approach of intuitionistic fuzzy set theory and dematel method to prioritize selection Criteria of bank branches locations2015In: International Annual Conference of the American Society for Engineering Management 2015, ASEM 2015, 2015, p. 595-604Conference paper (Refereed)
    Abstract [en]

    Optimally locating new bank branches is a strategic decision in banking industry in order to stay competitive. The importance of this issue is primarily due to the fact that locating branches in appropriate sites is one of the main factors in absorbing and satisfying bank customers. This results in a core benefit for banks, particularly in a vibrant competition. In addition, without a set of well-chosen selection criteria and their prominence, the goal of locating suitable sites for bank branches would not be efficiently achieved. In this research, six most widely used criteria for bank branch location consideration are obtained from the literature review. These criteria include demographic attributes, access to public facilities, transportation, competition, cost and flexibility. In order to prioritize these criteria, an integrated methodology of the intuitionistic fuzzy set theory as well as Decision Making Trial and Evaluation Laboratory Model (DEMATEL) technique (i.e. IFDEMATEL) are utilized. The DEMATEL technique considers interrelationships between criteria. Furthermore, the intuitionistic fuzzy set theory, which has some advantages over fuzzy set theory, to include the vagueness and imprecision of subjective judgments of specialists is applied. As a case study, a well-known Iranian public bank in the city of Rasht, Iran is considered. Consequently, the obtained ranks from the integrated method provide useful information for bank managers in determining efficient locations of their new branches.

  • 502.
    Vishaj, Fidan
    Mälardalen University, School of Innovation, Design and Engineering.
    Hylshantering samt flödesanalys2009Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Trioplanex International AB is a part of the group Trioplast Industrier AB, which produces packaging materials for the film and hygiene industry. The group is active throughout Europe, where most of the production is located in Sweden, with head office in Smålandsstenar. Operations in Landskrona consist of Trioplanex International AB and Trioplast Landskrona.

    Semi-finished articles consisting of paper cores, so called bobbins, give rise to a high amount of core waste in any form of core cutting. The objective of the report is to map out all core waste and illustrate the material flow with regard to present layout and equipment.

    In the beginning of the project an analysis of the current process was carried out with focus on the cutting equipment. A case study in the form of an improvement work took place in order to reduce the causes which had the biggest impact on existing machinery.

    Improvement proposals were discussed by the author together with supervisor, assigner and other parties involved. One of the solutions involved a relocation of industrial equipment with a modified material flow as a result. The introduction of continuous improvements is also one of the proposals outlined in the report.

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  • 503.
    Vu, Felix
    et al.
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Rahic, Melanie
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Chirumalla, Koteshwar
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Exploring Second Life Applications for Electric Vehicle Batteries2020In: Advances in Transdisciplinary Engineering, Volume 13, 2020, p. 273-284Conference paper (Refereed)
    Abstract [en]

    The purpose of the study is to explore an economically viable second life applications for electric vehicles (EV) batteries. There is a common consensus in the automotive industry that the reuse of retired EV batteries-often referred as a second life of a battery-can provide greater economic and sustainability benefits. Although literature acknowledged potential business opportunities with batteries' second life, there are still a lot of uncertainties, making success difficult to realize. In particular, identification of a profitable second life application with a right business model in the battery value chain has become a key success factor. Therefore, a case study, with a mixed research approach, considering both qualitative and quantitative methods, has been conducted in a company that is one of the leading manufacturers in the heavy-duty industrial vehicle industry, which currently is developing their electric vehicle machines with a li-ion battery pack. The study generated and analyzed several different second life concepts to find the most economically viable second life applications. The analysis concluded three second life business concepts in the initial phase. In the later phases, individual business model canvases and different reverse logistics processes were created, mapped, compared, and validated through quantitative analysis. The analysis show that out of three concepts remanufacturing application proved to be the most applicable one for the case company, within a range of 15 years' time. The paper contributes to the theory of circular business models in the context of EV batteries

  • 504.
    Wangenborn, Theresé
    Mälardalen University, School of Innovation, Design and Engineering.
    Design process enhancement2010Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The need and demands within the automotive industry on quality systems and processes are high. The most widely spread document for quality control is the standard ISO/TS 16949. The aim with the APQP-process is to build the quality of the product and process for new designs or re-designs. The aim of this project is to find a customized, when it comes to the design process, APQP-process for Fuji Autotech with focus on the two first phases where most of the design activities are performed. This is done by studying the existing APQP-process at Fuji Autotech and comparing it with mainly the standard ISO/TS 16949, interviewing personnel at the company, and empirical studies of the process. The focus areas are therefore to find a process that suites the company and contribute to the academia by sharing experience to the University. Three issues where considered being of importance for the outcome of the project.

    Question 1: Which factors are necessary to follow-up when assuring the quality of a project?

    Question 2: How does the process for quality assuring a project look like today?

    Question 3: How may the process for quality assurance of a project be optimized?

    The result from this research project is two new process maps and a new APQP process flow for Fuji Autotech has been created. The studies performed, within this research project have identified the following key factors for obtaining a good quality.

    • Existence of a management systems for quality
    • Management responsibility
    • Management of resources
    • Product design
    • Measure, Analyze and Improvement
    • Fulfilment of customer needs
    • Fulfilment of requirements
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  • 505.
    Wiktorsson, Magnus
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Andersson, T.
    Volvo Car Corporation, Göteborg, Sweden .
    Broman, M.
    Swedish Institute of Prod. Eng. Res., Stockholm, Sweden .
    A note on the specification of assembly systems2000In: International Journal of Production Research, ISSN 0020-7543, Vol. 38, no 16, p. 3997-4002Article in journal (Refereed)
    Abstract [en]

    Although the characteristics and cost of any technical system are highly influenced by the early design phases, little focus has been on thestructure and use of the specification in manufacturing system design, in this paper exemplified by assembly systems for large, high-volume products. This paper proposes a framework for elaborating such specifications. The framework is based on a division in qualifying and winning criteria, and is structured into four classes: functional requirements; internal design constraints; external design constraints; and winning criteria. Defining the specification by these terms is justified and explained by comparing standard mathematical formulation for this kind of problem to theframework. Future research efforts are pointed out where the framework is used throughout the development project for goal-focus, as thespecification is used and refined in an iterative manner.

  • 506.
    Wiktorsson, Magnus
    et al.
    VINNOVA - Swedish Governmental Agency for Innovation Systems, Sweden.
    Bellgran, Monica
    Haldex AB, Sweden.
    Jackson, Mats
    Mälardalen University, School of Innovation, Design and Engineering.
    Sustainable Manufacturing - Challenges and Possibilities for Research and Industry from a Swedish perspective2008In: Manufacturing Systems and Technologies for the New Frontier: The 41st CIRP Conference on Manufacturing Systems / [ed] Mamoru Mitsuishi; Kanji Ueda; Fumihiko Kimura, 2008, p. 119-122Conference paper (Refereed)
    Abstract [en]

    The need for environmental sustainability and a globally increasing manufacturing, drive a gigantic need for technology and strategies that will reduce CO2 emissions globally. The paper reflects on the situation for Swedish research and industry, with a focus on technology for environmentally sustainable manufacturing. Sweden has competitive equipment and system suppliers to the manufacturing industry with potential of contributing to the development of a sustainable manufacturing industry globally. Environmentally conscious actions need no longer be seen as challenges and contrary to financial considerations. On the contrary, it can be the basis for successful companies. Enabling features includes manufacturing systems and supply chain structures for sustainability e.g. local manufacturing providers, high energy efficiency in manufacturing processes and techniques for replacing fossil based energy generation by CO2 neutral generation. 

  • 507.
    Wiktorsson, Magnus
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Granlund, Anna
    Mälardalen University, School of Innovation, Design and Engineering.
    Bellgran, Monica
    Mälardalen University, School of Innovation, Design and Engineering.
    Reducing environmental impact from manufacturing – an industrial case study2011In: Journal of Production Research & Management, ISSN 2249-4766, Vol. 1, no 3Article in journal (Refereed)
    Abstract [en]

    There is a need for technologies and strategies that will reduce environmental impact from manufacturing globally. This paper presents an industrial case study with three objects of study where manufacturing of ‘green’ products are analysed and solutions are presented on reducing environmental impact from manufacturing. The objects represent a conceptual product, a manufacturing ready product and an update of an existing product. The case study also builds the base for presenting a draft analysis scheme for designing a more environmentally sustainable production system. The examples and the proposed analysis scheme are discussed in the context of designing a socially, economically and environmentally sustainable production system.

  • 508.
    Wiktorsson, Magnus
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Granlund, Anna
    Mälardalen University, School of Innovation, Design and Engineering.
    Bellgran, Monica
    Mälardalen University, School of Innovation, Design and Engineering.
    Reducing Environmental Impact from Manufacturing: Three Industrial Cases for the Manufacturing of ‘Green’ Products2009In: 42nd CIRP Conference on Manufacturing Systems, Grenoble, France, 2009Conference paper (Refereed)
    Abstract [en]

    There is a gigantic need for technologies and strategies that will reduce CO2 emissions globally. This paper presents three industrial cases in Sweden where manufacturing of ‘green’ products are analysed and solutions are presented where environmental impact from manufacturing is reduced. The cases represent a conceptual product, a manufacturing ready product and an update of an existing product. The cases also build the base for presenting a draft analysis scheme for designing a more environmentally sustainable production system. The cases and the proposed analysis scheme are discussed in the context of designing a socially, economically and environmentally sustainable production system.

  • 509.
    Wiktorsson, Magnus
    et al.
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Granlund, Anna
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Lundin, Mats
    Swerea IVF, Mölndal, Sweden.
    Södergren, B.
    Uppsala University, Uppsala, Sweden.
    Automation and flexibility: An apparent or real dilemma?2017In: International Series in Operations Research and Management Science, vol. 255, Springer New York LLC , 2017, p. 35-48Chapter in book (Refereed)
    Abstract [en]

    There are trade-offs between cost and capabilities throughout specification, implementation and operation of automated solutions in manufacturing companies. This chapter describes four identified dilemmas or contradictions while balancing flexibility to automation, based on an empirical study with interviews and workshop in five internationally competitive manufacturing companies. The study generated insights on experienced challenges while implementing automated solutions in manufacturing, and these apparent conflicts between automated solutions and maintaining a high operational flexibility need to be managed as manufacturing automation will continue to increase on all levels. 

  • 510.
    Wiktorsson, Magnus
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Sivard, Gunilla
    KTH, Sweden.
    Kjellberg, Torsten
    KTH, Sweden.
    Life Cycle Approaches on Product Realization: meeting the challenges of future production research2010In: Sustainable Production and Logistics in Global Networks: Proceedings of 43rd CIRP International Conference on Manufacturing Systems, Austrian Academy of Sciences, Vienna, 2010, p. 204-212Conference paper (Refereed)
    Abstract [en]

    The global increase of manufacturing activities and the need for sustainability, calls for manufacturing strategies and technologies with reduced environmental impact. This paper presents a part of a strategic research initiative in Sweden, established by an ambitious industry-academic collaboration. A cross-organizational and cross-disciplinary focus area has been formulated to develop leading-edge production research for the future: Life cycle approaches on product realization. The research considers the total life cycle of the product and production system on three levels: (1) On a process level, with manufacturing technologies supporting products with high energy efficiency and low materials usage. (2) On a system level, with an extended production system design for the total life cycle of the production and product portfolio. (3) On an information level, with methods and tools covering the life cycles of products and production.

  • 511.
    Wiktorsson, Magnus
    et al.
    Mälardalen University, School of Innovation, Design and Engineering. The Royal Institute of Technology, Stockholm.
    Varanasi, S.
    University of Florida, US.
    Bai, S.X.
    University of Florida, US.
    An optimal production flow control problem with impulsive demand1997In: Mathematical and Computer Modelling, ISSN 0895-7177, Vol. 26, no 2, p. 53-67Article in journal (Refereed)
    Abstract [en]

    We consider a system consisting of a single machine cell and producing one part type. The machine cell has a finite capacity and is reliable. We consider a finite planning horizon containing N impulsive demands. The demand occurs instantaneously. Each such demand is known by its size and when it occurs in the planning horizon. In order to keep the production as close to the demand as possible there is a trade off between building up inventory and letting customers wait. An optimal control problem is formulated to determine the optimal production strategy. Solution technique is developed via Pontryagin's Minimum Principle.

  • 512.
    Wlazlak, Paraskeva
    et al.
    Jönköping University, Sweden.
    Eriksson, Yvonne
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Johansson, Glenn
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Peter, Ahlin
    Husqvarna AB, Sweden.
    Visual representations for communication in geographicallydistributed new product development projects2019In: Journal of engineering design (Print), ISSN 0954-4828, E-ISSN 1466-1837, ISSN 0954-4828, Vol. 30, no 8/9, p. 385-403Article in journal (Refereed)
    Abstract [en]

    This study addresses the role of visual representations in supporting communication between an R&D team and geographically distributed suppliers for a new product development (NPD) project. Itspecifically focuses on the design and use of visual representationsas a feasible way for communication between the distributed actorswhen they face communication challenges originating from differences in skills in the English language, but also from differences inwork experiences. Relying on empirical materials from a Swedishmanufacturing company in the mechanical engineering industry,this paper makes the following contributions to the literature. First,it shows that visual representations are effective boundary objectsable to support process-oriented and product-oriented communication in distributed NPD projects. Second, it illustrates that visualrepresentations do not necessarily have to follow graphic designprinciples, but can still be effective if distributed actors share thesame project context. Finally, it highlights the need for a dynamic andcontext-dependent perspective on communication in NPD projects.

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  • 513.
    Wlazlak, Paraskeva
    et al.
    Jonkoping Univ, Sch Engn, Dept Ind Prod Dev Prod & Design, Jonkoping, Sweden..
    Säfsten, Kristina
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation. Jonkoping Univ, Sch Engn, Dept Ind Prod Dev Prod & Design, Jonkoping, Sweden.;Malardalen Univ, Sch Innovat Design & Engn, Eskilstuna, Sweden..
    Hilletofth, Per
    Jonkoping Univ, Sch Engn, Dept Supply Chain & Operat Management, Jonkoping, Sweden.;Univ Gavle, Dept Ind Engn & Management, Gavle, Sweden..
    Original equipment manufacturer (OEM)-supplier integration to prepare for production ramp-up2019In: Journal of Manufacturing Technology Management, ISSN 1741-038X, E-ISSN 1758-7786, Vol. 30, no 2, p. 506-530Article in journal (Refereed)
    Abstract [en]

    Purpose Although prior research provides evidence that production ramp-up is often disrupted by supplier-related problems, it fails to discuss how the original equipment manufacturer (OEM) and various types of suppliers integrate their functions and operations to secure preparations for production ramp-up. The purpose of this paper is to investigate OEM-supplier integration in a new product development (NPD) project to prepare for production ramp-up. Design/methodology/approach The results presented in this paper are based on a real-time, longitudinal study of a single collaborative NPD project in the mechanical engineering industry. The NPD project involves seven suppliers and it is carried out in a large Swedish company (the OEM) and fits the theory-elaborating approach of this research. Findings This study argues that the aspect of timing in OEM-supplier integration, the OEM's research and development (R&D) attitude toward collaboration and the OEM's (R&D) operating procedure are challenges affecting the preparation for production ramp-up. The following three mechanisms to facilitate OEM-supplier integration in order to prepare for production ramp-up are also discussed: the mediator's role, the OEM's face-to-face meeting at the project level and suppliers' formal face-to-face meetings with the OEM and internally. Originality/value This paper elaborates on and extends prior research on production ramp-up by conducting an empirical analysis that incorporates supplier integration in NPD. It bridges the gap between the literature on production ramp-up and on supplier integration in NPD and clearly indicates that supplier integration is an important prerequisite for successful production ramp-up.

  • 514.
    Yamamoto, Yuji
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Identifying similarities: Lean startup and major changes of production system2019Conference paper (Refereed)
    Abstract [en]

    : Major changes of production systems having strategic impacts on the organizations have occasionally been done in agile-like ways. However, they have been practiced with little theoretical foundation. This paper is one of the first attempts to identify similarities between Lean Startup (LS) and the phenomena in question as an effort to establish theoretical foundation to the phenomena. To identify the similarities, the phenomena observed in three previous studies are examined and compared with LS. As a result, similarities are found in key characteristics of LS and those of the phenomena observed in the studies. Similarities are also found in their contexts. Later in this paper, implications drawn from the identified similarities are discussed in terms of strengthening the theoretical foundation of the phenomena.

  • 515.
    Yamamoto, Yuji
    Mälardalen University, School of Innovation, Design and Engineering.
    Kaikaku in production2010Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    In today’s fast-changing and dynamic business environment, the pressures on manufacturing companies to compete on the global arena have been intensified. Production is challenged to handle and benefit from ever increasing competitions in terms of cost, delivery capability, and flexibility. In order to gain and sustain the competitive advantage under such circumstances, strong and constant development of production must be ensured not only with continuous improvements but also with radical improvements.

    Continuous improvement or called Kaizen has been an established approach of production improvement. The concept of Kaizen is well described and many tools and methods that support Kaizen have been developed and widely applied in industry. However, for radical improvement or “Kaikaku” in Japanese, the need and the importance of Kaikaku are still limitedly recognized at companies. Moreover, the knowledge of structured support that facilitates an effective and efficient execution of Kaikaku has been insufficiently developed.

    The purpose of the research presented in this thesis is to develop models and methods that address the need and the importance of Kaikaku in production and facilitate the realization of it.

    The research consists of a literature study and three case studies. The literature study was conducted in order to structure the concept of Kaikaku. As a result of the study, a conceptual framework of Kaikaku was developed. The three case studies were conducted to identify influential factors to the realization of Kaikaku. Both Swedish and Japanese companies were studied and analyzed. These case studies led to identify a way of realizing a certain type of Kaikaku. Some characteristics of organization setting were also found influential to the realization of Kaikaku.

    To conclude, the research has contributed to creating a foundation of the research area related to Kaikaku. This has opened up opportunities for further research in this field.

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  • 516.
    Yamamoto, Yuji
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Kaikaku in production in Japan: An analysis of Kaikaku in terms of ambidexterity2017In: International Series in Operations Research and Management Science, vol. 255, Springer New York LLC , 2017, p. 67-89Chapter in book (Refereed)
    Abstract [en]

    Japanese manufacturing companies have been active both in Kaizen—continuous improvement—and Kaikaku—radical improvement. However, compared to Kaizen, Kaikaku is less known and also less discussed in articles and books. Some questions may arise about Kaikaku: What is it? How is it undertaken in practice? How can an organization be proficient in both Kaikaku and Kaizen? In this chapter, these questions will be discussed. 

  • 517.
    Yamamoto, Yuji
    Mälardalen University, School of Innovation, Design and Engineering.
    Kaikaku in production toward creating unique production systems2013Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    In the business environment characterized by the severe global competition and the fast-paced changes, production functions of manufacturing companies must have a capacity of undertaking not only incremental improvement, Kaizen, but also large-scale improvement that is of a radial and innovative nature here called “Kaikaku” (Kaikaku is a Japanese word meaning change or reformation).

    Moreover, production functions especially those located in high-wage countries must be proficient in radical innovation in production to maintain their competitive advantages. They must to be capable of creating new knowledge and constantly developing and implementing radically new production technologies, processes, and equipment which make their production systems more “unique”. Here, a unique production system means a production system that is valuable for the company’s competition, rare in the industry, difficult for competitors to imitate, and difficult for them to substitute.

    Kaikaku is not a new phenomenon in the industry, and much research has been done on how to manage large-scale changes in Kaikaku. However, the previous research has rarely focused on the relation of Kaikaku and creating unique production systems. Kaikaku can be an effective means to create such systems. The objective of the research presented in the doctoral thesis is to propose how to plan and implement Kaikaku so that it contributes to creating unique production systems. To fulfil the objective, five empirical studies were conducted. In the empirical studies, data were collected through literature review, interviews, participant-observation, and action research. Japanese and Swedish manufacturing companies were studied.

    General conclusions of the research are summarized as follows. In order to achieve Kaikaku so that it contributes to realizing unique production systems, the intent and commitment to realize such systems must be present at the strategic level of the organization. Organization structures and resources need to be prepared to support the mentioned kind of Kaikaku. A process of Kaikaku can be a less linear and systematic but more cyclic and emergent process which can be seen as a series of unfolding smaller improvement or development projects that are undertaken during Kaikaku to achieve overall objectives. In each projects exploration and organizational learning are facilitated. The research has also found a specific direction of how to develop a production system in order to make the system more unique. Finally, in the research, a design method that is helpful to create unique production lines, cells, and equipment has been found and studied

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  • 518.
    Yamamoto, Yuji
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Need of understanding how to enhance innovation at early phases of production system development2018In: Participatory Innovation Conference 2018 PIN-C 2018, Eskilstuna, Sweden, 2018, p. 44-51Conference paper (Refereed)
    Abstract [en]

    The main purpose this paper is to discuss a research potential in the area of understanding how a company can enhance innovation at the early phases of production system development. Due to this purpose, the structure of this paper deviates from the conventional ones that include methods, findings, and contributions. The chain of logic in this paper is structured as follows. Firstly, the importance of the early phases in terms of constantly developing new production systems is mentioned. Then, the early phases are defined and described in theoretical frameworks. Later, two industrial cases are introduced to emphases the aforementioned importance. Finally, the research potential is discussed based on the theories and practices introduced in the earlier parts of the paper.

  • 519.
    Yamamoto, Yuji
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Bellgran, Monica
    Mälardalen University, School of Innovation, Design and Engineering.
    Fundamental mindset that drives improvements towards lean production2010In: Assembly Automation, ISSN 0144-5154, E-ISSN 1758-4078, Vol. 30, no 2, p. 124-130Article in journal (Refereed)
  • 520.
    Yamamoto, Yuji
    et al.
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Sandström, Kristian
    RISE SICS, Västerås, Sweden.
    Aranda Muñoz, Alvaro
    RISE SICS, Västerås, Sweden.
    Development of methods that support exploration of simple and low-cost IoT-aided improvement solutions at manufacturing plants2018In: The 2018 Annual Autumn Meeting of Japan Industrial Management Association JIMA, Tokyo, Japan, 2018Conference paper (Refereed)
  • 521.
    Yamamoto, Yuji
    et al.
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Sandström, Kristian
    RISE SICS, Västerås, Sweden.
    Aranda Muñoz, Alvaro
    RISE SICS, Västerås, Sweden.
    Karakuri IoT - the concept and the result of pre-study2018In: Proceedings Advances in Manufacturing Technology XXXIII ICMR2018, 2018, p. 311-316Conference paper (Refereed)
    Abstract [en]

    Although scholars and practitioners are actively discussing the potential benefits of introducing Internet of Thing (IoT) in production, IoT is still as an expensive solution in terms of investment and high technological threshold. Manufacturing companies seek a simpler and lower-cost approach to adopting IoT technologies in production, allowing companies to take advantage of the knowledge and innovation capabilities of people close to shop floor operations. This paper introduces the concept of “Karakuri IoT” – simple and low-cost IoT-aided improvements driven by the people close to shop floor operations. A pre-study is conducted to examine the feasibility of the concept. This paper presents the results of the pre-study.

  • 522.
    Yella, Gilbert Ncheh
    et al.
    Mälardalen University, Department of Innovation, Design and Product Development.
    Atem, Tongwa Ivo
    Mälardalen University, Department of Innovation, Design and Product Development.
    Continuous Quality Improvement: Implementation and Sustainability2007Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    As the philosophy of doing business shift from sell what you can produce to produce what you can sell so do the customers’ specification continuously become a vital tool during product development process, hence increasing the volatility of the business environment. The objective of this thesis is to thoroughly review literature to be supported by cases why most companies fail in sustaining improvement programs then map out a pathway that will leads to successful implementation.

    A series of reasons were found which impedes the successful implementation of improvement programs which includes; management is unable to define the problem to be solve and the method of measurement, implementers choose wrong parameters for improvement, implementers sub-optimize or may not involve everyone that will be affected by the program, top management gives little or no attention to improvement programs and at times they may even loose focus, so many concurrent improvement programs are executed which will result to resource overloading, teams members most often lack data integrity, and teams members are often scared to try new ideas hence prohibiting the chances of innovation. To minimize this cankerworm, a number of steps has been mentioned. The steps were divided into two phases, the selection phase and the implementation. The selection process includes; defining the program, focus program on improving shareholders’ value and choose program base on a holistic perspective. The implementation phase includes; commitment of top management, prioritize projects, use critical chain project management to plan and execute project, lay emphasis on quality data, minimize the number of concurrent projects, encourage risk taking, and spend time and resources on value adding activities.

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  • 523.
    Yesilgul, Mustafa
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Nasser, Firas
    Mälardalen University, School of Innovation, Design and Engineering.
    Discrete event modelling and Simulation of an Assembly Line at GKN Driveline Köping AB2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Today’s economic conditions force companies and organizations to work more effectively in their processes due to different reasons.  Especially; after the Second World War, owing to the changing business perception and strong competition between companies, new terms such as productivity, flexible systems, efficiency, and lean came into industrial engineering discipline. However, these kinds of terms also brought a new question. How are they reached?  At that point, discrete event simulation has been used as an effective method to give an answer to this question.

    From this perspective; this project focuses on discrete event simulation and its role in real industrial processes. The main interest of this paper is discrete event simulation, but in this study we also tried to give some detailed information about other types of simulations such as continuous and discrete rate.

    Basically, we can say that this paper consists of several parts.

    In the beginning of this paper, the reader can find some theoretical information about simulation itself and the requirements for implementing it on real processes.

    Secondly, we tried to explain different types of simulations and the reason why we used discrete event simulation instead of continuous or discrete rate in our case study.

    Furthermore, one of the main areas of this research is to inform the reader about how computer support is used as a simulation tool by today’s companies. To do this, a powerful software, Extendsim8, is described in detail.  The reader is able to find all the information about how to create discrete event models in this software.

    In case study part, we are able to find the results of the five months work that we did between February and June at GKNDriveline Köping AB in Sweden. In these five months, we had been busy with analyzing an assembly line, collecting data, creating a simulation model, discussion with workers and engineers and doing some tests such as validation & verification. In this part, the reader can find all the information about the production line and the simulation model.

    In conclusion, reader can find the results of the project at the end with the visualization of future state. As it will be discussed repeatedly in the paper, validation is one of the important steps in a simulation project. Therefore, in order to see the reliability of our simulation model, different calculations and tests were made. Last of all, some of results will be shown by graphs and tables in order to give better insight to reader. 

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    Thesis
  • 524.
    Ylönen, Albin
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Anderssson, Lovisa
    Mälardalen University, School of Innovation, Design and Engineering.
    Individanpassade hjälpmedel framtagna med additiv tillverkning2023Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In this project, both an existing product has been further developed and a new project has been created from scratch. These two products are designed to facilitate the daily life of wheelchair users.

    The existing product being improved is a previous student project of a support device that counteracts involuntary spams in the legs while being easy to use. The current supports available make it difficult to “get in and out of”, which is why this project is chosen.

    The product being developed from scratch is a tensioning device primarily intended for wheelchair floorball but is also suitable for other sports and applications. Current solutions are often self-built and deteriorate over time due to factors like the Velcro straps wearing out. The goal of this product is to create a tensioning device that maintains tension without deteriorating over time.

    The manufacturing method used for both products is additive manufacturing. The goal is for both products to be printable using the 3D printers available in the school’s facilities, and the plastic material polylactic acid (PLA) will be used. Challenges of working with additive manufacturing will be discussed, as well as the advantages and disadvantages. The strength will be tested through physical tensile testing, FEM simulations (like a digital tensile test), and manual calculations. The differences in results between there three methods will also be discussed.

    The research questions addressed in this work are:

    1. How can a support device be created using additive manufacturing that can withstand leg spasms and be securely attached to the wheelchair?
    2. How can a tensioning device be manufactured using additive manufacturing that can securely fasten the users in the wheelchair?

    The work resulted in designs that are on the right track to solving the problems but may still require further development and testing to achieve optimal results. Components manufactured with PLA using additive manufacturing are advantageous due to their relatively simple and fast production process. However, they result in slightly weaker components due to the material and its manufacturing method. Therefore, further testing and development are needed to achieve higher strength.

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    fulltext
  • 525.
    Yuji, Yamamoto
    Mälardalen University, School of Innovation, Design and Engineering.
    Proposal of a deliberate discovery-learning approach to building exploration capabilities in a manufacturing organization2013In: Advances in Sustainable and Competitive Manufacturing Systems: 23rd International Conference on Flexible Automation & Intelligent Manufacturing, Springer, 2013, p. 1249-1262Chapter in book (Refereed)
    Abstract [en]

    Many manufacturing organizations in developed countries need to be proficient in not only incremental improvements but also radical innovations. Radical innovations largely depend on exploration capabilities, in other words capabilities of searching, discovering, and developing radically new systems, processes, and operational practices. Since many manufacturing organizations are proficient in incremental improvements, an important challenge for them is to develop the exploration capabilities across the organizations. However, little knowledge has been accumulated as to how to develop such capabilities in practice. The main purpose of this paper is to propose an approach to building organization’s exploration capabilities. In the approach, the capabilities are built through leaders iteratively and deliberately creating situations where groups in an organization have to or can be more explorative. The approach is made by analogy from how organizational changes toward lean manufacturing were driven by an experienced lean consultant. In addition, this paper presents a model of how to practically apply the approach at companies. The model is developed firstly based on existing theories then modified through employing the model at a manufacturing company.

  • 526.
    Yuji, Yamamoto
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Monica, Bellgran
    Mälardalen University, School of Innovation, Design and Engineering.
    Four types of manufacturing process innovation and their managerial concerns2013In: Procedia CIRP, vol. 7, 2013, 2013, p. 479-484Conference paper (Refereed)
    Abstract [en]

    Manufacturing process innovation (MPI), an organization-wide effort involving radical redesign of manufacturing related processes and systems to achieve dramatic improvements in critical manufacturing performance measures, encompasses various kinds of activities. Some MPI initiatives focus on technological innovation and others may intend to change work processes and organizations’ behavioral routines. Some organizations adopt new technological solutions or work methods that are externally available, while others may develop and adopt novel technologies or organizational routines which are new to the state of the art. Different focus in MPI initiatives requires different approaches and preconditions for achieving desired outcomes. However, MPI has been mostly treated as one type of innovation in literature and further classifications of MPI have not been made. This paper presents four types of MPI and discusses what managers can expect and prepare for each type of MPI. Basic strategic directions in terms of what type of MPI can be conducted at a specific organization is also discussed. The four types of MPI is developed through a literature review of various research fields, for instance manufacturing strategy, process innovation, organizational innovation, typology of innovation, and new product development.

  • 527.
    Yuji, Yamamoto
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Monica, Bellgran
    Mälardalen University, School of Innovation, Design and Engineering.
    Manufacturing process improvements using value adding process point approach2013Conference paper (Refereed)
    Abstract [en]

    Manufacturing functions need to be capable of constantly developing new manufacturing lines, cells, and pieces of equipment in order to maintain their operational competitiveness. This paper explores a unique approach to analyzing and designing manufacturing processes referred to as the Value Adding Process Point (VAPP) approach. This approach particularly focuses on the points where value is added to materials in manufacturing processes. The approach is mostly used at Japanese companies and it has contributed to developing unique manufacturing lines, cells, and pieces of equipment that tend to be simple, slim, and compact, and require low investment cost. The approach has also contributed to achieving major improvements in different performance measures in manufacturing. However, the approach is rarely known internationally. Moreover, the amount of practical information on how to apply the approach at companies has been limited in the scarce literature on the approach. The purpose of this paper is to introduce the VAPP approach to a broader audience and also to provide practical information on how to apply the approach by describing a case study in which the approach was applied at a Swedish manufacturing company. At the company, the application was made in a manner of experiential learning. In this paper, it is described how the VAPP approach was applied, what outcomes were generated by the application, and how participants in the case study experienced the application of the approach. Discussions are made as to usefulness of the approach and effective use of the approach.

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    fulltext
  • 528.
    Yuji, Yamamoto
    et al.
    Mälardalen University, School of Innovation, Design and Engineering.
    Monica, Bellgran
    Mälardalen University, School of Innovation, Design and Engineering.
    Manufacturing process innovation initiatives at Japanese manufacturing companiesIn: Journal of Manufacturing Technology Management, ISSN 1741-038X, E-ISSN 1758-7786Article in journal (Refereed)
    Download full text (pdf)
    fulltext
  • 529.
    Zafarzadeh, Masoud
    Mälardalen University, School of Innovation, Design and Engineering.
    A Guideline for Efficient Implementation of Automation in Lean Manufacturing Environment2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The competitive climate of production and high labour cost, motivate western companies to use technologies like automation as a mean to increase manufacturing competitiveness. On the other hand companies are aware about cost reductive policies like lean production which has shown noticeable achievement; consequently some manufacturers tend to follow such system. In this situation, in order to have lean enterprise, it is vital to find a clear picture of challenges and potentials of implementing automation within a lean environment. If the process of developing automation is not efficient and companies’ strategy and mission is not considered in time of project development, the result may not be lean at the end. So finding an appropriate guideline that can be used in time of developing automated projects is very important.This thesis aims to develop a guideline that can be used in developing automation solutions to have lean result at the end of the projects. The guidelines can be used in both assembly and manufacturing development projects.VOLVO GTO has chosen as the case study for this thesis. In order to find the answer of research questions two main areas in manufacturing and assembly are marked.

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    Masoud Zafarzadeh
  • 530.
    Zhang, Zhedong
    Mälardalen University, Department of Innovation, Design and Product Development.
    Automatisering av slutförpackning: En förstudie vid Hilton Food Group, Sverige AB2007Independent thesis Basic level (professional degree), 20 points / 30 hpStudent thesis
    Abstract [sv]

    Examensarbetet har genomförts på Hilton Food Group, Sverige AB (HFG Sverige) i västerås. Uppgiften var att göra en förstudie som utreder möjligheten att automatisera slutförpackningsprocessen av komsummentförpackat kött (kpk) på företaget och är en del av projektet Robot till tusen. Projektet drivs av Robotdalen i syfte att öka tillväxten hos små- och medelstora företag i Mälardalen med hjälp av robotisering. Målet med examensarbetet var att ta fram förbättringsförslag och ett genomtänkt beslutsunderlag med framtagna koncept för automatiseringen av slutförpackningsprocessen. De prioriterade koncepten skall möjliggöra en besparing av personalresursen. Några avgränsningar som gjorts var att inte ta hänsyn till materialhantering före eller efter slutförpackningsprocessen.

    HFG bearbetar och packar över 150 olika sorters köttprodukter i deras 17 produktionslinjer. Dessa packas i standardlåda från Svenska Retursystem (SRS) och levereras till ICA. Detta görs i dagsläget manuellt. För att nå en fungerande automatiserad lösning behövde antal praktiska materialhanteringsproblem lösas:

    - Kvalitetskrav på trågen

    - SRS-låda försörjning

    - Bygelpositionering och kontroll innan lådfyllning och stapling

    - Trågförpackning från transportband till SRS-låda

    - Hantering av ”avvikelse” t.ex. tråg som måste packas om

    - Hantering av störningar

    I rapporten presenteras tänkbara lösningar till de nämnda problemen. Dessa lösningar, robotar och andra utrustningar som behövs för att realisera det automatiska systemet på en packlinje beräknas för HFG Sverige få en investeringskostnad upp till 2,5 miljoner kr. Minst en person per linje per skift sparas vid slutpackningsprocessen. Detta skulle resultera i en återbetalningstid på cirka två år.

    Författaren presenterar även andra förslag bland annat en automatiserad lösning för flera packlinjer samt att spelvända närmande packlinje för att effektivisera processen. Dessa är dock övergripande koncept varför ingen investeringskostnad kalkylerats.

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    FULLTEXT01
  • 531.
    Zhuang, Jing
    Mälardalen University, School of Innovation, Design and Engineering.
    The impact of the Covid pandemic on the supply chain in the electronics industry and Its recovery strategies2022Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The covid pandemic has brought severe impacts on the supply chain of the electronics industry since it starts. Electronic companies are struggling to find strategies for reducing these impacts. The purpose of the research intends to provide decision-makers in the electronics industry with a clear understanding of the impacts on the supply chain and support them to formulate effective recovery activities and long-term strategies for restructuring more resilient and sustainable supply chains in the future. 

    Delphi method was performed in the research with the consideration of the aim and research questions, research quality as well as the available resources. The consensus among a group of experts was achieved after two rounds of investigation. The empirical data was collected from 12 experts in the 8 electronic companies through interviews and questionnaires. Both data collection techniques are suitable and have advantages in obtaining people’s perspectives and experiences of reality. 

    In the study, an amount of 10 impact items, 9 short-term recovery actions, and 10 proposals of long-term strategies were identified and aligned. Followed up by the analysis and discussion together with existing findings from previous literature. The impacts will vary from company to company, and each recovery activity has its own strengths and weaknesses, so decision-makers need to choose the appropriate recovery activities considering the realities of company resources and the economy. Furthermore, the findings of long-term strategies implied that the supply chain should be restructured in terms of resilience and sustainability from a long-term perspective. 

    Future research can continue to examine how these strategies can be implemented by exploring case studies with electronics companies. Besides, it is also valuable to investigate what are the main challenges in carrying out these strategies. A broader survey in the electronic industry is also recommended to validate the results.

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    fulltext
  • 532.
    Åkesson, Jennie
    et al.
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Sundström, Angelina
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Johansson, Glenn
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation. Department of Design Sciences, Lund University, Sweden.
    Chirumalla, Koteshwar
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    How the characteristics of small and medium-sized enterprises influence product-service systems design challenges2023In: International Journal of Manufacturing Research, ISSN 1750-0591, no 4, p. 434-453Article in journal (Refereed)
    Abstract [en]

    Manufacturing companies can contribute to a resource-efficient society by designing product-service systems (PSS). Despite the increased importance of PSS for the manufacturing industry in their efforts to become sustainable, few studies focus on small and medium-sized enterprises (SMEs). The study presented in this article aims to add knowledge on how the characteristics of SMEs influence the challenges SMEs experience when designing PSS. It employs a multiple case study design where data are based on interviews, workshops, and internal archive documents from three contract manufacturing SMEs. The analysis suggests that nine SME characteristics influence the challenges SMEs experience when designing PSS. It also shows that SMEs’ different characteristics influence one or more challenges, and that SMEs have a short-term horizon and a reactive business approach which influences the overall challenge of designing PSS. 

  • 533.
    Önnered, Simon
    Mälardalen University, School of Innovation, Design and Engineering, Innovation and Product Realisation.
    Current and Future Systems of Circularity in the Energy System: Closing the energy loop2023In: Proceedings of XXXIV ISPIM Innovation Conference / [ed] Iain Bitran, Leandro Bitetti, Steffen Conn, Jessica Fishburn, Paavo Ritala, Marko Torkkeli & Jialei Yang, 2023Conference paper (Other academic)
    Abstract [en]

    The circular economy and the energy transition are two pivotal transitions insustainable development, however, largely distinct in academic discourse.There is an abundance of grey literature on the combined topic, and as thefuture uncertainty of these fields remain high, we employ a futures studiesmethodology. Entailing a continuous data-collection covering journal articles,media, and a plethora of agency and consultancy reports; followed by threeanalytical phases which aims to extrapolate current developments, interpretinformation, and critical assessment. Which is then applied to the threehorizons framework to understand these transitions together. Allowing us totheorize about the future systems of circularity in the energy sector and howthese might co-evolve. Currently dominated by flows of material, followed byan increasingly service oriented system, and finally towards a transformativecircular energy system. Results yield policy recommendations for supportingthe integration of circular economy principles in the energy sector.

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    Current and Future Systems of Circularity in the Energy System. Önnered 2023
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