Warranty cost models considering imperfect repair and preventive maintenance

2006 ◽  
Vol 11 (3) ◽  
pp. 147-159 ◽  
Author(s):  
Hongzhou Wang
Keyword(s):  
Preventive Maintenance ◽  
Cost Models ◽  
Imperfect Repair ◽  
Warranty Cost

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 Age Preventive Maintenance Model with Imperfect Repair under Resistance of Amour Block Facility and External Shock

2010 ◽  
Vol 66 (1) ◽  
pp. 931-935
Author(s):  
Takashi SATOW ◽  
Yoshiharu MATSUMI ◽  
Takayuki HIRAYAMA ◽  
Hayato SUMI ◽  
Takao OTA
Keyword(s):  
Preventive Maintenance ◽  
Imperfect Repair ◽  
Maintenance Model

Analysis of a two-dimensional stair-case warranty policy with preventive maintenance

2020 ◽  
Vol 32 (1) ◽  
pp. 51-67
Author(s):  
Jinting Wang ◽  
Sheng Zhu ◽  
Simiao Du
Keyword(s):  
Mathematical Model ◽  
Preventive Maintenance ◽  
Optimal Strategy ◽  
Optimal Solution ◽  
Two Dimensional ◽  
Rectangular Region ◽  
Numerical Example ◽  
Warranty Cost

Abstract We develop a mathematical model to study optimal preventive maintenance (PM) strategy under a two-dimensional stair-case warranty policy considering both age and usage of a product. During the warranty term, sellers implement preventive maintenance within the stair-case region of the warranty policy and upon failure a product is repaired minimally and immediately. Our objective is to find the optimal PM strategy that minimizes the seller’s cost of warranty while jointly considering the age and usage intervals of the PM policy and the level of PM executed. We also discuss how our results compare to those in a two-dimensional warranty policy with a rectangular region, and we find that the stair-case policy is preferable for sellers. An algorithm is provided to find the optimal solution and a numerical example is presented to illustrate how to find an optimal strategy with our proposed method. We show numerically that the expected total warranty cost is convex both in the age and the usage of the product under certain conditions.

scholarly journals Customized Preventive Maintenance Strategies for Products Sold with Two-Dimensional Warranty

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Fangqi Dong ◽  
Huaqiang Wang ◽  
Feng Men ◽  
Lijun Liang
Keyword(s):  
Numerical Analysis ◽  
Preventive Maintenance ◽  
Programming Model ◽  
Two Dimensional ◽  
Maintenance Costs ◽  
Maintenance Strategies ◽  
Warranty Period ◽  
Extended Warranty ◽  
Warranty Cost ◽  
Warranty Costs

Two-dimensional warranty has played a significant role in improving product quality and competitiveness. However, two-dimensional basic warranty (BW) and extended warranty (EW) have not yet been combined effectively, and the customized maintenance strategies based on the consumers’ heterogeneity have been quite limited, which result in high maintenance costs. In this paper, the possibility of reducing warranty cost over BW and EW is explored by classifying customers based on their usage rates and then offering them with customized preventive maintenance (PM) strategies. By considering the purchasing ratio of EW contracts, the PM strategies for BW and EW are closely combined by the bi-level programming model. Numerical analysis is given to show the application of the proposed warranty strategy, and the significant findings and sensitivity of the main parameters are analyzed in the end. The findings demonstrate that the customized PM strategies combining BW and EW can effectively reduce warranty costs within the warranty period and provide a scientific guidance for manufacturers to design a more reasonable PM strategy.

An availability-based warranty policy considering preventive maintenance and learning effects

2017 ◽  
Vol 232 (6) ◽  
pp. 576-586 ◽  
Author(s):  
Chun Su ◽  
Longfei Cheng
Keyword(s):  
Preventive Maintenance ◽  
Learning Effects ◽  
Wind Turbine Gearbox ◽  
Cost Rate ◽  
Maintenance Schedule ◽  
Warranty Period ◽  
Hazard Rate Model ◽  
Equipment Failures ◽  
Warranty Cost ◽  
Maintenance Plan

By considering learning effects during the process of maintenance, this article investigates an availability-based warranty policy from the manufacturer’s perspective. Imperfect preventive maintenance activities are implemented to reduce the number of equipment failures so as to meet the product’s availability requirement and minimize warranty servicing cost during the warranty period. Hybrid hazard rate model is used to describe imperfect preventive maintenance actions; maintenance plan and warranty servicing cost are optimized by considering learning effects. Preventive maintenance schedule within a warranty period is optimized cycle by cycle, and the warranty cost rate is minimized under the requirement of availability within each cycle. Numerical example of a wind turbine gearbox is provided to verify the effectiveness of the proposed availability-based warranty policy. Sensitivity analysis shows that by considering learning effects on maintenance, the gearbox can maintain a higher availability level with a lower warranty cost than the case without consideration of learning effects.

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