An imperfect repair strategy for two‐dimensional warranty

The objective of this study is to develop a warranty servicing strategy, based on imperfect and minimal repairs, that minimises the total warranty servicing cost. For pre‐specified degrees of repair, the expected warranty servicing cost is minimised by optimally partitioning a two‐dimensional rectangular warranty region into n disjoint subregions. We numerically illustrate the imperfect repair strategy and provide a comparison with previously studied warranty repair strategies.