The problem of determining the optimal warranty period, assumed to coincide with the manufacturer’s lower specification limit for the lifetime of the product, is addressed. It is assumed that the quantity sold depends via a Cobb–Douglas-type demand function on the sale price and on the warranty period, and that both the cost incurred for a non-conforming item and the sale price increase with th...

In this paper, a new method for developing a lower bound on exact completion time distribution function of stochastic PERT networks is provided that is based on simplifying the structure of this type of network. The designed mechanism simplifies network structure by arc duplication so that network distribution function can be calculated only with convolution and multiplication. The selection of...

A Summary Service plans are a type of warranty contract under which retailers promise to repair or replace products for consumers. Separate from manufacturers' warranty policies, which typically come bundled with the products, and also known as service contracts, protection plans, or retailer extended warranties, retailers' service plans are optional and usually offer broader and more prolonged...

Forecasting the number of warranty claims is vitally important for manufacturers/warranty providers in preparing fiscal plans. In existing literature, a number of techniques such as log-linear Poisson models, Kalman filter, time series models, and artificial neural network models have been developed. Nevertheless, one might find two weaknesses existing in these approaches: (1) they do not consi...

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...

In this paper, a new method for developing a lower bound on exact completion time distribution function of stochastic PERT networks is provided that is based on simplifying the structure of this type of network. The designed mechanism simplifies network structure by arc duplication so that network distribution function can be calculated only with convolution and multiplication. The selection of...

This software is made available for research and instructional use only. You may copy and use this software without charge for these non-commercial purposes, provided that the copyright notice and associated text is reproduced on all copies. For all other uses (including distribution of modified versions), please contact the author. This software is provided " as is " , without any expressed or...

This software is made available for research and instructional use only. You may copy and use this software without charge for these non-commercial purposes, provided that the copyright notice and associated text is reproduced on all copies. For all other uses (including distribution of modified versions), please contact the author. This software is provided " as is " , without any expressed or...