Non-parametric hazard rate estimation of hard failures with known mileage accumulation rates in vehicle population
by Bharatendra K. Rai, Nanua Singh
International Journal of Reliability and Safety (IJRS), Vol. 2, No. 3, 2008

Abstract: Major automobile companies spend billions of dollars annually towards warranty costs. Engineers carry out field reliability studies to obtain appropriate feedback for design, manufacturing, and/or service fix that help to reduce the high warranty costs. Warranty claims data, however, are known to be messy and need to be carefully used during statistical modelling and analysis to extract useful feedback. Hazard rate estimation is an important step for reliability and design engineers in obtaining a meaningful feedback from warranty claims data. The methodology discussed in this paper uses mileage accumulation rates in the vehicle population to calculate the number of vehicles at risk of a warranty claim at the start of a month and to provide a non-parametric estimate of the hazard rate. Although there are many books and articles that discuss reliability and hazard rate analysis in such a situation, this article provides a simple and stepwise methodology with an application example for component/sub-system level hazard rate estimation when dealing with automobile warranty data.

Online publication date: Sat, 01-Nov-2008

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Reliability and Safety (IJRS):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com