TY - GEN
T1 - Mechanical and electrical products reliability estimation under weibull distribution based on accelerated life test
AU - Bo, Wan
AU - Guicui, Fu
AU - Li, Wang
PY - 2013
Y1 - 2013
N2 - In practice, most mechanical and electrical products life obeys Weibull distribution.This paper based on the relationship between Weibull distribution and exponential distribution, improved the point estimate of characteristic life during the normal stress and enhanced the precision of analysis. The point estimate of the shape parameter under normal stress level was presented, when the assumption that the shape parameter under different stress levels keeps invariable was got rid of. Meanwhile, a means was put forward to give interval estimation of the Weibull distribution parameter and the lower confidence limit of the reliability. Finally, an example of the mechanical and electrical product's constant-stress accelerated life test was given and proved that the proposed approach is accuracy. It should be valuable for implement of engineering.
AB - In practice, most mechanical and electrical products life obeys Weibull distribution.This paper based on the relationship between Weibull distribution and exponential distribution, improved the point estimate of characteristic life during the normal stress and enhanced the precision of analysis. The point estimate of the shape parameter under normal stress level was presented, when the assumption that the shape parameter under different stress levels keeps invariable was got rid of. Meanwhile, a means was put forward to give interval estimation of the Weibull distribution parameter and the lower confidence limit of the reliability. Finally, an example of the mechanical and electrical product's constant-stress accelerated life test was given and proved that the proposed approach is accuracy. It should be valuable for implement of engineering.
KW - Accelerated life test
KW - Exponential distribution
KW - Interval estimate
KW - Mechanical and electrical products
KW - Shape parameter
KW - Weibull distribution
UR - https://www.scopus.com/pages/publications/84874850887
U2 - 10.4028/www.scientific.net/AMM.302.332
DO - 10.4028/www.scientific.net/AMM.302.332
M3 - 会议稿件
AN - SCOPUS:84874850887
SN - 9783037856468
T3 - Applied Mechanics and Materials
SP - 332
EP - 337
BT - Advanced Engineering and Materials
T2 - 2013 International Conference on Mechanical Engineering and Materials, ICMEM 2013
Y2 - 27 January 2013 through 28 January 2013
ER -