Research On Optimal Strategies Of Preventive Maintenance Under Two-Dimensional Warranty

The maintenance warranty problem has a wide range of applications in the automotive field.As a means of product promotion,warranty plays an important role in the market,so the research on maintenance warranty has a strong practical significance.The focus of this paper is to combine periodic preventive maintenance with two-dimensional warranty,and to establish an L-shaped warranty area,and to analyze the utility of agent and customers in combination with the popular second-hand product trading issues.First,this paper studies the model in which manufacturer offers new products to customers with L-shaped 2D warranty.In this warranty area,the manufacturer is responsible for the free after-sales service.In order to reduce the maintenance cost,periodic preventive maintenance is introduced on the basis of this,that is,regardless of the state of the product,the performance of the product is improved through PM,and the failure rate is lowered,thereby reducing the number of product failures.At the same time,the provision of the L-shaped warranty area can solve the unfair problem that the customers of different usage rates end the warranty at the same time.We maximize the benefits of manufacturers by optimizing the cycle and extent of preventive maintenance.Secondly,this paper combines the popular second-hand product trading problem and studies the maintenance warranty model of second-hand products.This model considers the game between agent and customers.The agent recycles the product for performance,becomes a second-hand product for sale to customers,and provides a two-dimensional warranty.During the warranty period,the customer will be repaired free of charge,and periodic preventive maintenance will be carried out.The cost of preventive maintenance will be borne by the agent and the customers.The agent minimizes its own maintenance costs by determining the degree of performance improvement when recycling products and the number of periodic preventive maintenance.Customers use second-hand products to generate a certain amount of revenue per unit of time,which maximizes revenue during product use by determining the rate of use of the product and the degree of periodic preventive maintenance.Through the non-cooperative game and cooperative game analysis of both parties,the optimal decision and maximum utility of both parties in each case are determined.