This paper presents the effects of a free-repair warranty on the periodic replacement policy in discrete time process. Consider a repairable product that should be operating at the time over an indefinitely long operation cycle n (     , 2 , 1 n ); under the discrete-time periodic replacement policy, a product is preventively replaced at pre-specified operation cycles    , 3 , 2 , N N N ...

All multi-component product manufacturing companies face the problem of warranty cost estimation. Failure rate analysis of components plays a key role in this problem. Data source used for failure rate analysis has traditionally been past failure data of components. However, failure rate analysis can be improved by means of fusion of additional information, such as symptoms observed during afte...

This paper provides a replacement policy for warranty products with different failure rate from the consumer’s viewpoint. Assume that the product is replaced once within a finite planning horizon, and the failure rate of the second product is lower than the failure rate of the first product. Within warranty period (WP), the failed product is corrected by minimal repair without any cost to the c...

Due to the imperfection of processes, quality some products may be unsatisfactory. Moreover, equipment failure can stop production for a while. Therefore, integrating triple concepts quality, maintenance, and inventory control has attracted attention. Triple are constituents pre-sale costs. Selling price warranty generally considered maintain market share maximize producer's profit. Quality mai...

This paper is motivated by the inventory planning issues faced by a manufacturer of a digital projector. The seller faces demand from two sources: new demand, and demand to replace failed items under warranty. We model this setting as a multi-period single product inventory problem where the new demand in different periods are independent and the demand for replacing failed items under warranty...

In this article, by considering both a limited number of failure replacements and random working cycles as warranty terms, hybrid (HW) is designed from the manufacturer’s point view to warrant product that does successive projects at cycles. The cost produced HW derived analyzed. By defining warrants product, two types post-warranty replacement models are investigated consumer’s ensure reliabil...

This paper considers a general repairable product sold under a failure-free renewing warranty agreement. In the case of a general repairable model, there can be two types of failure: type I failure (a minor failure), which can be rectified by minimal repairs; and type II failure (a catastrophic failure), which can be removed only by replacement. After a minimal repair, the product is operationa...

Employing remanufactured and refurbished products are among the new strategies that companies used to raise their profits as well as protects environment. Although used product equipment gives an opportunity to purchase latest technology, customers are doubtful about quality and reliability of these products. Because of limitation that developing countries faces in buying new products, some cou...