서지주요정보
2 변수 가속수명에 의한 최우수명추정량의 성질 : 와이블 수명분포의 경우 = Properties of ML estimators in accelerated life tests with two stress variables : case of weibull lifetime distribution
서명 / 저자 2 변수 가속수명에 의한 최우수명추정량의 성질 : 와이블 수명분포의 경우 = Properties of ML estimators in accelerated life tests with two stress variables : case of weibull lifetime distribution / 임우섭.
저자명 임우섭 ; Lim, Wu-Sup
발행사항 [대전 : 한국과학기술원, 1992
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8002796

소장위치/청구기호

학술문화관(문화관) 보존서고

MIE 92021

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초록정보

This thesis is concerned with the problem of estimating the model parameters and percentiles of the lifetime distribution by the method of maximum likelihood with data obtained under accelerated lifetests in which two stresses $X_1$ and $X_2$ are constantly applied to the test items. It is assumed that ⅰ) lives of items follow a Weibull distribution, ⅱ) the Weibull log scale parameter is a multiple linear function of either $X_1$ and $X_2$ or $X_1, X_2$ and $X_1X_2$, and ⅲ) the Weibull shape parameter is independent of stresses. Items are randomly assigned to each of the four combinations of stress variables ($X_1$ and $X_2$) and stress levels (low and high) according to an allocation rule, and tested until censoring time. For each of 120 different combinations of ALT setting of three allocation rules (1:1:1:1, 2:3:3:4 and 1:3:3:5), two low stress levels (0.1 and 0.3), four censoring times (0.4, 0.8, 1.2 and ∞) and five sample sizes (12, 24, 36, 48 and 60), lifetime data are generated and properties of the maximum likelihood estimators of the parameters and the percentiles at use condition are investigated with respect to biases and mean square errors by a Monte Carlo simulation.

서지기타정보

서지기타정보
청구기호 {MIE 92021
형태사항 [ix], 98 p. : 삽도, 수표 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Wu-Sup Lim
지도교수의 한글표기 : 배도선
지도교수의 영문표기 : Do-Sun Bai
학위논문 학위논문(석사) - 한국과학기술원 : 산업공학과,
서지주기 참고문헌 : p. 96-98
주제 Weibull distribution.
Strains and stresses.
수명 시험. --과학기술용어시소러스
수명 분포. --과학기술용어시소러스
최우법. --과학기술용어시소러스
Accelerated life testing.
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