An Optimization Model for Two-Dimensional Warranty Policy of Equipment under Preventive Maintenance
CHENG Zhonghua
YANG Zhiyuan
YANG Hongbing
Abstract：Warranty is the primary coverage of equipment after-sale service, and reasonable warranty servicing strategy has significant impact on manufacturer′s warranty cost and the product availability. A two-dimensional warranty cost and availability model is developed under preventive maintenance and the solving process proposed, where the function of failure rate is given by accelerated failure time (AFT) model. By modeling the warranty cost and product availability, the optimum warranty servicing strategy is derived to minimize the cost-effect ratio. Then, regression analysis with optimal cost-effect under different warranty regions is used to derive the flexibility warranty servicing strategy. Finally, a numerical illustration is given to examine the validity of the model.
Keywords：two-dimensional warrantypreventive maintenancecost-effective ratioaccelerated failure time (AFT)
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 79-86,100 )