Cost assessment related to age of multiple components is discussed. We use definitions of equivalent ages in multi-dimensional life to illustrate how cost characteristics should be fairly assessed. Pricing of used items with residual value and assigning warranty for used items as a function of item’s age are the subjects of our study. Numeric examples based on correlated Bivariate normal distri...

In this paper we consider the problem of minimizing the costs of outsourcing warranty repairs when failed items are dynamically routed to one of several service vendors. In our model, the manufacturer incurs a repair cost each time an item needs repair and also incurs a goodwill cost while an item is awaiting and undergoing repair. For a large manufacturer with annual warranty costs in the tens...

The environmental sustainability and business benefits of end-of-life products have led to worldwide growth in the remanufacturing market. However, customers are often sceptical about quality durability remanufactured products. To ensure a risk-free customer experience, dealers carry out some upgrading actions on most critical components offer reasonable warranty period at time resale. It is cr...

Fe is a candidate to replace Co in WC hardmetals, due its lower cost and toxicity. Here, WC-FeCr hardmetal was compression tested at 900–1200 °C. Particular attention paid the steady-state creep rates stress-exponents (n) during isostress treatments. Three regimes of n are observed. Two these were previously reported for WC-Co: power law (n ≈ 3) stresses below ~100 MPa; grain boundary sliding 1...

This paper makes a link between opportunistic maintenance literature and warranty analysis of a power plant. A new plant warranty maintenance tasks are observed over a two year period. The main aim is to see how opportunistic maintenance could be incorporated when the warranty period has elapsed. The paper examine the warranty period maintenance task list and propose adequate methods for assess...

In this paper we study the distributional properties (mean, variance, characteristic function) of the discounted warranty cost (DWC) for general warranty programs including free replacement (FRW) pro rata (PRW) and FRW/PRW in the context of perfect repair. Since only failure times and types are needed in the derivation of these properties, the reliability of the systems is modeled according to ...

BACKGROUND AND AIMS Simple, low-cost central obesity measures may help identify individuals with increased cardiometabolic disease risk, although it is unclear which measures perform best in African adults. We aimed to: 1) cross-sectionally compare the accuracy of existing waist-to-height ratio (WHtR) and waist circumference (WC) thresholds to identify individuals with hypertension, pre-diabete...

Use objective data to compare the prevalence of Headaches/Migraines (HA/MIG), HA/MIG patients’ all-cause utilization short-and-long-term disability(STD-and-LTD, respectively) and workers' compensation (WC), explore changes over time. Retrospective analysis using WorkPartners Research Reference Database (RRDb) from 2001—2019. For each year, subjects with medical-claims for were identified based ...