Product take-back and remanufacturing systems are difficult to implement cost effectively. One contributing factor is the complex nature of the inter-relationships among components of a product. Modeling of these relationships helps determine the product’s overall performance as a function of the performances of individual components. Reliability, a commonly used measure of performance, is a good measure of the physical failure rate, but it does not always reflect value degradation as experienced by customers or experts. As a result, it is difficult to define the effective performance of remanufactured products when some components are reused while others are not. Legislated take-back mandates across the world increasingly make it necessary to understand this perceived performance. In this paper we propose a method for combining customers’/experts’ assessments of value degradation using the maximum entropy principle. This value degradation information is then coupled with the components’ failure rate information. A method for modeling performance of a product that is comprised of components of different ages is presented. Overall performance is measured in units of time (effective age) by aligning with that of a product that has never been disassembled. We demonstrate the approach using a personal computer as example.
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e-mail: vpandey2@illinois.edu
e-mail: thurston@illinois.edu
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March 2009
Research Papers
Effective Age of Remanufactured Products: An Entropy Approach
Vijitashwa Pandey,
Vijitashwa Pandey
Graduate Research Assistant
Department of Industrial and Enterprise Systems Engineering,
e-mail: vpandey2@illinois.edu
University of Illinois at Urbana-Champaign
, 104 South Mathews Avenue, 117 Transportation Building, Urbana, IL 61801
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Deborah Thurston
Deborah Thurston
Gutgsell Professor
Department of Industrial and Enterprise Systems Engineering,
e-mail: thurston@illinois.edu
University of Illinois at Urbana-Champaign
, 104 South Mathews Avenue, 117 Transportation Building, Urbana, IL 61801
Search for other works by this author on:
Vijitashwa Pandey
Graduate Research Assistant
Department of Industrial and Enterprise Systems Engineering,
University of Illinois at Urbana-Champaign
, 104 South Mathews Avenue, 117 Transportation Building, Urbana, IL 61801e-mail: vpandey2@illinois.edu
Deborah Thurston
Gutgsell Professor
Department of Industrial and Enterprise Systems Engineering,
University of Illinois at Urbana-Champaign
, 104 South Mathews Avenue, 117 Transportation Building, Urbana, IL 61801e-mail: thurston@illinois.edu
J. Mech. Des. Mar 2009, 131(3): 031008 (9 pages)
Published Online: February 20, 2009
Article history
Received:
November 30, 2007
Revised:
November 10, 2008
Published:
February 20, 2009
Citation
Pandey, V., and Thurston, D. (February 20, 2009). "Effective Age of Remanufactured Products: An Entropy Approach." ASME. J. Mech. Des. March 2009; 131(3): 031008. https://doi.org/10.1115/1.3042146
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