...Stefanka Chukova; Mahmood Shafiee Purpose The purpose of this paper is to review and develop stochastic models for the evaluation of the expected warranty cost, from dealer's viewpoint, for second hand items sold under different warranty policies. Design/methodology/approach This study makes...

...Vicente González‐Prida Díaz; Luis Barberá Martínez; Juan Francisco Gómez Fernández; Adolfo Crespo Márquez Purpose The purpose of this paper is to present a brief summary of quality and contractual aspects for the improvement of the warranty management. Together with this, the present work...

...D.K. Manna; Surajit Pal; Sagnik Sinha Purpose The purpose of this paper is to characterise the failure model of a system that is covered by a two‐dimensional warranty, one dimension depicting time and the other usage. Specifically, the authors study the effect of use‐rate on system life when each...

...Chin‐Yen Lin; Tsung‐Hsien Kuo; Ya‐Chi Huang; Chinho Lin; Li‐An Ho Purpose The purpose of this paper is to propose a model that captures the fuzzy events is proposed to find the optimal periods of warranty policies. The model considers repair and replacement actions in the warranty period...

...Stefanka Chukova; Yu Hayakawa; Tadashi Dohi; Peter S. Buczkowski; Mark E. Hartmann; Vidyadhar G. Kulkarni Purpose To consider the problem of outsourcing warranty repairs to outside vendors when items have priorities in service. Design/methodology/approach The repair allocation problem...

...Stefanka Chukova; Yu Hayakawa; Tadashi Dohi; Stefanka Chukova; Yu Hayakawa Purpose To provide a brief introduction to warranty analysis and a classification of general repairs. To introduce the notion of accelerated probability distribution and use it to model imperfect warranty repairs. Design...

...Stefanka Chukova; Yu Hayawaka; Tadashi Dohi; Yu‐Hung Chien Purpose To investigate the optimal burn‐in time from the perspective of minimizing the expected total cost (i.e. manufacturing plus warranty costs) per unit of product sold under a failure‐free renewing warranty policy. The conditions...

...Stefanka Chukova; Yu Hayakawa; Tadashi Dohi; Rezaul Karim; Kazuyuki Suzuki Purpose To provide a brief survey of the literature directed towards the analysis of warranty claim data. Design/methodology/approach For convenience, this survey of the analysis of warranty claims data is somewhat...

...Stefanka Chukova; Yu Hayakawa; Tadashi Dohi; Koichiro Rinsaka; Tadashi Dohi Purpose To determine the optimal software warranty period in continuous and discrete circumstances where the difference between the software testing environment and the operational environment can be characterised...

...Stefanka Chukova; Yu Hayakawa; Tadashi Dohi; Hiroaki Sandoh; Takeshi Koide Purpose To make a theoretical comparison between two scale‐inspection and warranty policies for weight‐quality, one practical and the other theoretically grounded. Design/methodology/approach Comparison is made...

...S. Gary Teng; S. Michael Ho; Debra Shumar Purpose To show that handling warranty returns is essential in a supply chain for product/process improvement and that the major step in resolving warranty return problems is to correctly classify the returned parts and identify the problem(s). Design...

... of these failures are not only related to the costs incurred to the failure in the field, but also to customer appeasement Within this quality cost category there are the claims against warrant. The warranty, which is a contract between a manufacturer and the consumer, specifies that the manufacturer agrees...

...D.K. Manna; Surajit Pal; A. Kulandaiyan This article deals with the problem of cost estimation for increased warranty time of a multi‐module product. The warranty policy of interest is two‐dimensional involving warranty limits on both age and usage of the product. Failure of the product is caused...

...Surajit Pal; G.S.R. Murthy In this article we present an application of Gumbel's bivariate exponential distribution model in the context of estimating warranty costs of motor cycles under a new warranty policy. The problem in question is as follows: Under the present two‐dimensional warranty policy...

... that there are significant differences in the relationship between TQM and organisational performance across industry sectors and different size companies, particularly on the effect of defect rates, warranty costs and innovation of new products. The main implication of the findings for managers is that a typical...

...Won Young Yun Considers the estimation problem of the total warranty cost under two types of warranty. The product (e.g. car) is sold under two types of warranty (mileage and age). The failed product will be minimally repaired by the manufacturer during the preassigned warranty, the length of which...