TY - GEN
T1 - Product robust design via accelerated degradation tests
AU - Sanchez, Luis Mejia
AU - Pan, Rong
PY - 2009/9/21
Y1 - 2009/9/21
N2 - Accelerated degradation tests (ADTs) are often applied for assessing the reliability of highly reliable products, but it is realized that ADT experiment can also be used as a tool for improving product design. In particular, when external stress factors are not constants in a product's use environment, it is necessary to utilize ADT experiments to investigate the interaction between these stress factors and product design factors so that a robust design, which is insensitive to external stress factors, can be obtained. In this paper, a methodology is developed for achieving product robust design via ADTs. We present a degradation model that can be used for studying the effects of design and stress factors on degradation rate. Model parameter estimation is obtained by the maximum likelihood method and an optimization procedure is derived for finding the best setting of design factors that can minimize the effect of stress variation. Finally, the proposed method is validated by a case study of window wiper switch experiment.
AB - Accelerated degradation tests (ADTs) are often applied for assessing the reliability of highly reliable products, but it is realized that ADT experiment can also be used as a tool for improving product design. In particular, when external stress factors are not constants in a product's use environment, it is necessary to utilize ADT experiments to investigate the interaction between these stress factors and product design factors so that a robust design, which is insensitive to external stress factors, can be obtained. In this paper, a methodology is developed for achieving product robust design via ADTs. We present a degradation model that can be used for studying the effects of design and stress factors on degradation rate. Model parameter estimation is obtained by the maximum likelihood method and an optimization procedure is derived for finding the best setting of design factors that can minimize the effect of stress variation. Finally, the proposed method is validated by a case study of window wiper switch experiment.
KW - Degradation model
KW - Reliability improvement
KW - Response surface methodology
KW - Robust parameter design
UR - http://www.scopus.com/inward/record.url?scp=70349154647&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349154647&partnerID=8YFLogxK
U2 - 10.1109/RAMS.2009.4914656
DO - 10.1109/RAMS.2009.4914656
M3 - Conference contribution
AN - SCOPUS:70349154647
SN - 9781424425099
T3 - Proceedings - Annual Reliability and Maintainability Symposium
SP - 89
EP - 94
BT - 2009 Proceedings - Annual Reliability and Maintainability Symposium, RAMS 2009
T2 - 2009 - Annual Reliability and Maintainability Symposium, RAMS 2009
Y2 - 26 January 2009 through 29 January 2009
ER -