Sample sizes for estimating the Weibull hazard function from censored samples

Author

Meeker, William Q., Jr. ; Escobar, Luis A. ; Hill, David A.

Author_Institution

Dept. of Stat. Iowa State Univ., Ames, IA, USA

Volume

41

Issue

1

fYear

1992

fDate

3/1/1992 12:00:00 AM

Firstpage

133

Lastpage

138

Abstract

An important part of planning a life test is the specification of the sample size needed to achieve a specified degree of precision from the experiment. The hazard function is frequently used as a decision criterion, especially in replacement decisions. It is shown how to choose the sample size needed to estimate a point on the hazard function with a specified degree of precision. An easy-to-use graph that can be used with the Weibull distribution and a life test that will be terminated after a pre-specified amount of time are provided. How to apply the methodology with other time-to-failure distributions and other kinds of life tests is described

Keywords

failure analysis; life testing; reliability theory; statistical analysis; Weibull hazard function; censored samples; decision criterion; life test; reliability; sample size; time-to-failure distributions; Costs; Force measurement; Hazards; Integrated circuit technology; Life testing; Reliability theory; Statistical analysis; Temperature; Time measurement; Weibull distribution;

fLanguage

English

Journal_Title

Reliability, IEEE Transactions on

Publisher

ieee

ISSN

0018-9529

Type

jour

DOI

10.1109/24.126687

Filename

126687