Warranty costs: An age‐dependent failure/repair model

Boyan Dimitrov, Stefanka Chukova and Zohel Khalil

Naval Research Logistics (NRL), 2004, vol. 51, issue 7, 959-976

Abstract: An age‐dependent repair model is proposed. The notion of the “calendar age” of the product and the degree of repair are used to define the virtual age of the product. The virtual failure rate function and the virtual hazard function related to the lifetime of the product are discussed. Under a nonhomogeneous Poisson process scenario the expected warranty costs for repairable products associated with linear pro‐rata, nonrenewing free replacement and renewing free replacement warranties are evaluated. Illustration of the results is given by numerical and graphical examples. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004.

Date: 2004
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