Abstract
Product designers are always concerned that a newly developed product is properly performing its functionality for its intended life under consumer usage conditions. It is known that the failure rate is increased in the late time of product life cycle as the consequence of deterioration being built up. Namely, continuous changes may take place in the parameter values of product and the product application may be ended before expiration of its intended life. Hence, a design that considers parameter compensation to extend using time becomes an important factor in earlier stages of product design. Other than the parameter values, the tolerance values are an important element affecting the product performance, which are also needed to be decided appropriately. In this paper, an optimization model considers minimizing the total cost, which includes material cost, inspection cost, quality loss, failure cost, and tolerance cost by conducting concurrent optimization of the decision variables, initial setting, process mean, process tolerance, and using time. The design constraints are the restrictions resulting from process capability limits, functionality requirements, and quality necessities. The software GAMS was used to find optimal values for the decision variables of interest. Finally, an example of various components and subassemblies under deterioration process is presented to explain the proposed model and sensitivity analysis on some decision variables is performed.
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This paper was recommended for publication in revised form by Associate Editor Dae-Eun Kim
Chien-Ping Chung received his B. S., M. S., and Ph. D. degrees in Industrial Engineering from Feng Chia University (Taiwan, ROC). Currently, he is a lecturer at the Department of Industrial Engineering and Systems Management at Feng Chia University, Taiwan. His research interests include Robust Design, Statistical Quality Control, and Design of Experiment.
Angus Jeang received his B.S. degree in Industrial Engineering from Chun Yuan University (Taiwan, ROC) and received his M.S. degree in Industrial Engineering from Kansas State University (USA). He was then employed by the Nuclear Division of Siemens Gammasonics, Inc. in Desplaines, Illinois (USA), serving as a manufacturing engineer. After he received his Ph.D. in Industrial and Manufacturing Engineering from Wayne State University, Detroit, Michigan (USA), he got a teaching position at the Department of Industrial Engineering and Systems Management at Feng Chia University, Taiwan. Then, he acted as head of department for a period of time. Currently, he is a full professor of this department.
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Chung, CP., Jeang, A. An approach for product life functionality under component deterioration process. J Mech Sci Technol 23, 237–245 (2009). https://doi.org/10.1007/s12206-008-0922-7
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DOI: https://doi.org/10.1007/s12206-008-0922-7