TY - GEN
T1 - Reliability assessment based on proportional degradation hazards model
AU - Chen, He Tao
AU - Yuan, Hong Jie
PY - 2010
Y1 - 2010
N2 - Proportional hazards model is introduced into dealing with accelerated degradation test data, and a model based on proportional degradation hazards model (PDHM) is proposed, the only assumption is that the logarithm of the degradation hazard function is a linear function of the stress covariates. The PDHM is established with degradation data, then the probability density function and Likelihood function of the model are derived, and maximum likelihood estimate (MLE) and Newton-Raphson method are utilized to estimate the model parameters. According to the relationship between failure threshold and degradation measure, the reliability model of the product is established, with which the reliability is assessed. The model in this paper is demonstrated correct and valid by assessing the reliability of percent increase in resistance over time of carbon-film resistors.
AB - Proportional hazards model is introduced into dealing with accelerated degradation test data, and a model based on proportional degradation hazards model (PDHM) is proposed, the only assumption is that the logarithm of the degradation hazard function is a linear function of the stress covariates. The PDHM is established with degradation data, then the probability density function and Likelihood function of the model are derived, and maximum likelihood estimate (MLE) and Newton-Raphson method are utilized to estimate the model parameters. According to the relationship between failure threshold and degradation measure, the reliability model of the product is established, with which the reliability is assessed. The model in this paper is demonstrated correct and valid by assessing the reliability of percent increase in resistance over time of carbon-film resistors.
KW - Degradation data
KW - Newton-Raphson method
KW - Proportional degradation hazards model
KW - Reliability assessment
UR - https://www.scopus.com/pages/publications/78650609228
U2 - 10.1109/ICIEEM.2010.5646465
DO - 10.1109/ICIEEM.2010.5646465
M3 - 会议稿件
AN - SCOPUS:78650609228
SN - 9781424464814
T3 - Proceedings - 2010 IEEE 17th International Conference on Industrial Engineering and Engineering Management, IE and EM2010
SP - 958
EP - 962
BT - Proceedings - 2010 IEEE 17th International Conference on Industrial Engineering and Engineering Management, IE and EM2010
T2 - 17th International Conference on Industrial Engineering and Engineering Management, IE and EM2010
Y2 - 29 October 2010 through 31 October 2010
ER -