OPTIMAL INSPECTION-WARRANTY POLICY FOR WEIGHT-QUALITY BASED ON STACKELBERG GAME - FRACTION DEFECTIVE AND WARRANTY COST -

摘要

In the final stage of manufacturing some specific products, there is a weighing process where we weigh each product using a scale. However, the scale occasionally becomes un-calibrated and therefore, the product may be shipped out with a label or a mark showing incorrect weight. Such an uncalibrated state of the scale can be detected by inspection carried out to the scale. Further, we should introduce warranty to the products whose labels or marks show incorrect weights. This study considers two types of inspection and warranty policy (inspection-warranty policy in short) and make a comparison between them through a Stackelberg game formulation to discuss an optimal policy, taking into account the consumers' viewpoint. Numerical illustrations are also presented.