One of the most important problems in the fatigue analysis and design of aircraft structures is the prediction of the fatigue crack growth in service. Available in-service inspection data for various types of aircraft indicate that the fatigue crack damage accumulation in service involves considerable statistical variability. In this paper, we consider the problem of estimating the minimum time...

Along with increasing the warranty period for complex systems, reducing the warranty servicing costs has become an issue of great importance to the manufacturers. One possible way to reduce the expected warranty servicing cost is by making sound decision on the product warranty and maintenance strategies. Therefore, warranties (basic warranty and extended warranty) and maintenance (corrective a...

It is observed that in India for all types of two wheeler vehicles, warranty offered is Free Replacement Warranty (FRW) policy. Present paper deals primarily with the cost analysis of warranty being given on different types of two wheeler vehicles, in India. Under the existing cost set up, a new warranty model, which involves an initial FR period, followed by the Pro Rata period, has been devel...

This paper addresses the impact of warranty of malfunctioning and warranty of misinforming on making informed purchase decisions over the adoption period. We propose mathematical models for quantification of the risk of misinforming by exploring customers’ learning evolution. These measures, dynamic in their nature, allow evaluation of customer’s satisfaction or dissatisfaction as a function of...

BACKGROUND The purpose of this study was to determine the prevalence and timing of routine follow-up single-photon emission computed tomography (SPECT) studies after a normal stress SPECT scan compared with the patient's warranty period (ie, time to 1% risk of death or myocardial infarction). METHODS AND RESULTS We identified patients at Mayo Clinic Rochester who had normal stress SPECT scans...

This paper considers four options of warranty and preventive maintenance policy. The product is repairable and sold with a non-renewing free warranty policy. For products sold with warranty, preventive maintenance (PM) actions by manufacturers and/or buyers have an impact on the total costs for both parties. In this study, we deal with a model to study the effect of PM that carried out by the m...

When product quality is unobservable to consumers, a manufacturer can convey the quality information using signals such as warranty and brand reputation. The purpose of this paper is to study the interactions between warranty, brand reputation, and product quality, and to examine the quality signaling strategies. We model a monopolist who tries to convey unobservable product quality to heteroge...