A systematic warranty-reliability-price decision model for two-dimensional warranted products with heterogeneous usage rates

2021 ◽  
pp. 107820
Author(s):  
Zhaomin Zhang ◽  
Shuguang He ◽  
Zhen He ◽  
Dongfan Wang ◽  
Fangqi Dong
Keyword(s):  
Decision Model ◽  
Two Dimensional ◽  
Price Decision ◽  
Usage Rates

scholarly journals Research on Pricing of Flexible Two-Dimensional Extended Warranty Considering Preventive Maintenance

2019 ◽  
Vol 37 (2) ◽  
pp. 393-400
Author(s):  
Xiaolei Zhang ◽  
Chun Su
Keyword(s):  
Preventive Maintenance ◽  
Two Dimensional ◽  
Maintenance Strategy ◽  
Pricing Model ◽  
Reduction Model ◽  
Warranty Period ◽  
Extended Warranty ◽  
Warranty Cost ◽  
Usage Rates

Facing the uncertainty in transaction of two-dimensional extended warranty, a flexible pricing model is presented considering imperfect preventive maintenance combined with the degradation characteristics of item. The measure of two-dimensional preventive maintenance is carried out based on specified age interval or usage interval, the effect of imperfect preventive maintenance is described by age reduction model. The extended warranty cost is modeled from the perspective of manufacturer and customer, the method of gridding search is employed to optimize the maintenance strategy under different cases. Moreover, customized extended warranty price and warranty services are proposed on the basis of consumer usage rates. The results demonstrate that it is helpful to maximize the benefit of vendor by providing customized warranty strategy, the implementation of preventive maintenance during the whole warranty period can effectively reduce warranty cost for both sides.

scholarly journals A Customized Two-dimensional Warranty Menu Design for Customers with Heterogeneous Usage Rates

2019 ◽  
Vol 52 (13) ◽  
pp. 559-564
Author(s):  
Zhaomin Zhang ◽  
Zhen He ◽  
Shuguang He
Keyword(s):  
Two Dimensional ◽  
Menu Design ◽  
Usage Rates

scholarly journals Research on the Dispatching Rules of Inter-Basin Water Transfer Projects Based on the Two-Dimensional Scheduling Diagram

2021 ◽  
Vol 9 ◽  
Author(s):  
Siyu Cai ◽  
Long Sun ◽  
Qingtao Liu ◽  
Yi Ji ◽  
Hao Wang
Keyword(s):  
Water Supply ◽  
Prospect Theory ◽  
Decision Model ◽  
Optimal Operation ◽  
Water Transfer ◽  
Water Diversion ◽  
Two Dimensional ◽  
Multi Objective ◽  
Scheduling Scheme ◽  
Basin Water

Inter-basin water transfer projects play an important role in allocating water resources that vary both in temporal and spatial scale while supporting regional development. In the practical operation of inter-basin water transfer projects, high water level and less inflow runoff would result in water supply destruction, while low water level and more inflow runoff would cause abandoned water. How to play the compensation roles of hydrological characteristics and storage capacities of multi-reservoirs to maximize the utilization efficiency of water resources, the key is to select the basis for the decision-making of starting water transfer process. In this paper, we selected the “Datong-Huangshui” water transfer project as the research subject, analyzed the composition of the inter-basin water transfer system, and constructed a dispatching rule extraction model including water transfer rules, water diversion rules, and water supply rules. Then the NSGA-II was used to solve the multi-objective optimization model to obtain the Pareto frontier solution set of the dispatching rules. Finally, the optimal operation scheme was determined and discussed according to the scheduling scheme decision model. The model itself was based on the gray target model and prospect theory. We found that: (1) The optimal target frontier obtained by the two-dimensional scheduling diagram and the hedging rules for water supply was closer to the theoretical optimal frontier of the multi-objective problem. This result indicated that the two-dimensional scheduling diagram and the hedging rules for water supply could better guide the water diversion operation of inter-basin water transfer projects. (2) Based on the multi-objective optimal operation schemes set, the OPT scheme obtained by the scheduling scheme decision model using gray target model and prospect theory could generate 359 million Kwh. At the same time, it could guarantee 90% of municipal and industrial water supply and 85% of agricultural water supply.

MODELLING TWO-DIMENSIONAL LEASE CONTRACT WITH PREVENTIVE MAINTENANCE AND SERVICING STRATEGY

2016 ◽  
Vol 78 (6-6) ◽  
Author(s):  
H. Husniah ◽  
B. P. Iskandar
Keyword(s):  
Preventive Maintenance ◽  
Maintenance Cost ◽  
Two Dimensional ◽  
Penalty Cost ◽  
Repair Strategy ◽  
Imperfect Repair ◽  
Lease Contract ◽  
Time Required ◽  
Two Parameters ◽  
Usage Rates

In this paper, we study a two-dimensional lease contract with preventive maintenance and servicing strategy involving imperfect repair. The lease contract coverage is characterized by two parameters – age and usage. The lessor will carry out preventive maintenance (PM) and a servicing strategy which allows more than one imperfect repairs under the contract. In the lease contract studied, we consider that a penalty cost incurred when the time required to perform an imperfect repair exceeds a target. This servicing strategy aims to reduce equipment failures and hence decreasing the penalty cost and maintenance cost during the leased contract. We find the optimal PM degree and the imperfect repair strategy such that the expected total cost is minimized. Numerical examples are presented to illustrate the optimal PM and servicing strategy for various usage rates (heavy, moderate and low usage rates), and compared results for this servicing strategy with those of minimal repair strategy. 

Design of a flexible preventive maintenance strategy for two-dimensional warranted products

2019 ◽  
Vol 234 (1) ◽  
pp. 74-87
Author(s):  
Anshu Dai ◽  
Guanzhou Wei ◽  
Zhaomin Zhang ◽  
Shuguang He
Keyword(s):  
Customer Satisfaction ◽  
Preventive Maintenance ◽  
Numerical Experiments ◽  
Failure Process ◽  
Maintenance Cost ◽  
Two Dimensional ◽  
Maintenance Strategy ◽  
Different Types ◽  
Warranty Cost ◽  
Usage Rates

Offering appropriate preventive maintenance strategy has an effective impact on achieving higher customer satisfaction. This article presents a flexible preventive maintenance strategy, where customers are grouped into two groups according to their usage rates, and then different preventive maintenance programs are applied to different types of customers. The product follows a two-dimensional failure process and the preventive maintenance cost is shared between the manufacturer and customer on a pro rata basis. The manufacturer’s warranty cost is minimized by jointly optimizing the pro rata proportion of the preventive maintenance cost, the preventive maintenance number and the corresponding preventive maintenance levels. Numerical experiments are presented to illustrate the effectiveness of the proposed approach. Results prove that the flexible preventive maintenance strategy outperforms the conventional unified preventive maintenance strategy in terms of total warranty cost. Besides, some managerial suggestions are also given to provide guidance of implementing the proposed preventive maintenance strategy.

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