Joint optimization of maintenance and spares ordering policy for a use‐oriented product‐service system with multiple failure modes

Author(s):  
Jing Zhang ◽  
Xian Zhao ◽  
Yanbo Song ◽  
Qingan Qiu
Author(s):  
Jing Zhang ◽  
Xian Zhao ◽  
Yanbo Song

With the shift of business pattern from the traditional manufacturer orientation to customer orientation, the product-service system has become more and more popular. This paper takes an electrical vehicle charging station as the research object and builds a joint optimization model of reliability design and spares inventory with the objective of maximizing net profit under the constraints of availability and customer’s loss rate. Particularly, this model considers not only two types of services, namely fast charging and slow charging but also the transfer of customers between different types of service. This new model is more accordant with the practical circumstances by involving a series of elements of the product-service system simultaneously, such as the customer’s arrival, service, replacement maintenance and spares replenishment process. Then, the probabilistic indices related to reliability are derived by applying the continuous time Markov Process. A balance between the number of charging piles and spares inventory policy can be achieved by solving the joint optimization model. The influence of model parameters on these indices and the superiority of the proposed joint optimization model are analyzed in detail by numerical examples. Finally, some critical conclusions are obtained with the intent of promoting the system reliability and profit. Furthermore, this joint optimization model can be extended to more circumstances and provides guidances to solve the reliability optimization problems regarding a similar system.


2015 ◽  
Vol 29 (2) ◽  
pp. 171-195 ◽  
Author(s):  
Hong, Yong-pyo ◽  
Young Jun Kim

Author(s):  
Nur Indrianti ◽  
Devika Kumala ◽  
Tri Wibawa

Increasing awareness of the importance of services has given rise to the concept of product-service system where goods and services are sold as an integrated package to customers. On the other hand, the emerging sustainability concept has escalated the demand for sustainability for industries. Consequently, it is necessary to build strategies that lead the company to achieve sustainability goals while keeping competitiveness. Drawing on the necessity service and sustainability concept in the quality improvement of the product-service system, this study aims to develop a systematic design tool by filling the gap to the previous studies. We used Quality Function Deployment (QFD) approach by considering customer requirements (VoC) and stakeholder requirements (VoSt), instead of VoC only, based on the service and sustainability dimensions. We refer to the proposed QFD approach as QFDSPS. We introduce service productivity index (SPI) to measure the performance of the system. Thus, in the proposed methodology, the strategies for quality improvement were defined as subject to VoC, VoSt, and SPI. The methodology was implemented in a Javanese restaurant which meets the characteristics of a product-service system. The result shows that the proposed method can be implemented. The implications due to the implementation of the method are also discussed.


2021 ◽  
Vol 294 ◽  
pp. 126188
Author(s):  
Yeneneh Tamirat Negash ◽  
Liria Salome Calahorrano Sarmiento ◽  
Ming-Lang Tseng ◽  
Korbkul Jantarakolica ◽  
Kimhua Tan

2021 ◽  
Vol 1 ◽  
pp. 1411-1420
Author(s):  
Ryan Michael Ruvald ◽  
Andreas Larsson ◽  
Christian Johansson Askling ◽  
Alessandro Bertoni ◽  
Tobias Larsson

AbstractPrototypes are an established tool for rapidly increasing learning, communication and decision making rationale for design projects. The proven success has spawned a litany of approaches and methods for building and planning the efficient planning and construction of prototypes. Translating these methods into simple usable tools to assist novice designers has generated broadly applicable canvases to support prototyping across the design process. Product Service System design has similarly introduced prototyping methods and tools into the process. Presently there is a lack of support for generating early phase tangible prototypes for functional PSS design aimed at more radically innovative solutions instead of currently dominant traditional products with traditional add-on services. This work explores the viability of utilizing existing prototyping support tools in the context of early PSS design through workshops with student designers and practitioners. The data from these workshops illuminates the alignments and misalignment gaps presented as guidelines to enable better support for early PSS designers.


Author(s):  
Michela Zambetti ◽  
Federico Adrodegari ◽  
Giuditta Pezzotta ◽  
Roberto Pinto ◽  
Mario Rapaccini ◽  
...  

2012 ◽  
Vol 2012 ◽  
pp. 1-19 ◽  
Author(s):  
John P. T. Mo

New business models in complex engineering products have favoured the integration of acquisition and sustainment phases in capability development. The product service system (PSS) concept enables manufacturers of complex engineering products to incorporate support services into the product’s manufacturing and sustainment lifecycle. However, the PSS design has imposed significant risks to the manufacturer not only in the manufacture of the product itself, but also in the provision of support services over long period of time at a predetermined price. This paper analysed three case studies using case study research design approach and mapped the service elements of the case studies to the generic complex engineering product service system (CEPSS) model. By establishing the concept of capability distribution for a PSS enterprise, the capability of the CEPSS can be overlaid on the performance-based reward scheme so that decision makers evaluate options related to the business opportunities presented to them.


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