To extend, or to shorten: Optimal lifetime planning

Minjung Kwak, Harrison M. Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Extending the life of a product through remanufacturing or refurbishing is generally regarded as being "greener" than new production, as it avoids the resource consumption and waste generation associated with the new production; however, when considering improved performance of new products, extending the lifetime of less efficient, less productive old products may not always be greener than new production. Shortening the product's life by early replacement with a newer, more efficient product can be a better option, as "Cash-for-Clunker" programs have claimed. This paper presents a generic model to decide optimal lifetime strategy for a product. Three different lifetime strategies-To maintain, to extend, and to shorten the current lifetime-Are compared from an environmental perspective, for a given time horizon. The average environmental impact per unit production is used as the basis for a fair comparison. Applied with an optimization technique, the model can also identify the optimal lifetime length of a product. To illustrate, the developed model is applied to an example of complex heavy-duty, off-road equipment.

Original languageEnglish (US)
Title of host publicationASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2012
Pages1329-1337
Number of pages9
EditionPARTS A AND B
DOIs
StatePublished - Dec 1 2012
EventASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2012 - Chicago, IL, United States
Duration: Aug 12 2012Aug 12 2012

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
NumberPARTS A AND B
Volume3

Other

OtherASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2012
CountryUnited States
CityChicago, IL
Period8/12/128/12/12

ASJC Scopus subject areas

  • Modeling and Simulation
  • Mechanical Engineering
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design

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  • Cite this

    Kwak, M., & Kim, H. M. (2012). To extend, or to shorten: Optimal lifetime planning. In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2012 (PARTS A AND B ed., pp. 1329-1337). (Proceedings of the ASME Design Engineering Technical Conference; Vol. 3, No. PARTS A AND B). https://doi.org/10.1115/DETC2012-70546