Analysis of field data under two-dimensional warranty

M. Jung and D.S. Bai

Reliability Engineering and System Safety, 2007, vol. 92, issue 2, 135-143

Abstract: This paper proposes a method of estimating lifetime distribution for products under two-dimensional warranty in which age and usage are used simultaneously to determine the eligibility of a warranty claim. To analyze two-dimensional warranty data, univariate and bivariate approaches which use a reliability model including both age and usage can be considered. Most of previous works are centered on the univariate approach which assumes a functional relationship between age and usage. We consider a bivariate approach which assumes that the two variables are statistically correlated in a bivariate distribution. Methods of obtaining maximum likelihood estimators are outlined, and specific formulas are obtained for the cases where marginal distributions are Weibull. An illustrative example is given and numerical studies are performed to compare the two approaches.

Keywords: Two-dimensional warranty; Field data; Bivariate lifetime distribution; Maximum likelihood estimation (search for similar items in EconPapers)
Date: 2007
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (15)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S095183200500219X
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:92:y:2007:i:2:p:135-143

DOI: 10.1016/j.ress.2005.11.011

Access Statistics for this article

Reliability Engineering and System Safety is currently edited by Carlos Guedes Soares

More articles in Reliability Engineering and System Safety from Elsevier
Bibliographic data for series maintained by Catherine Liu ().