TY - GEN
T1 - Modeling and analysis for degradation with an initiation time
AU - Guo, Huairui
AU - Gerokostopoulos, Athanasios
AU - Liao, Haitao
AU - Niu, Pengying
PY - 2013
Y1 - 2013
N2 - For failure modes that are caused by a degradation mechanism, almost all of the existing models assume that degradation starts once a product begins operation. However, under some situations, there is a degradation free period where degradation starts only after an initiation time. Both the initiation period and the degradation growth period affect the product reliability. The lengths of these two periods are usually governed by different failure mechanisms. In this paper, a two-step strategy for modeling degradation with an initiation period is proposed. Individual models are first built for the degradation free and the degradation growth periods. These two models are then integrated to obtain the final reliability model of the system. The relative importance values of the degradation free period and the degradation growth period with respect to product reliability are also studied. The importance values can help engineers allocate resources to improve the reliability of a product more effectively.
AB - For failure modes that are caused by a degradation mechanism, almost all of the existing models assume that degradation starts once a product begins operation. However, under some situations, there is a degradation free period where degradation starts only after an initiation time. Both the initiation period and the degradation growth period affect the product reliability. The lengths of these two periods are usually governed by different failure mechanisms. In this paper, a two-step strategy for modeling degradation with an initiation period is proposed. Individual models are first built for the degradation free and the degradation growth periods. These two models are then integrated to obtain the final reliability model of the system. The relative importance values of the degradation free period and the degradation growth period with respect to product reliability are also studied. The importance values can help engineers allocate resources to improve the reliability of a product more effectively.
KW - degradation
KW - initiation time
KW - reliability importance
UR - http://www.scopus.com/inward/record.url?scp=84879408358&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879408358&partnerID=8YFLogxK
U2 - 10.1109/RAMS.2013.6517639
DO - 10.1109/RAMS.2013.6517639
M3 - Conference contribution
AN - SCOPUS:84879408358
SN - 9781467347099
T3 - Proceedings - Annual Reliability and Maintainability Symposium
BT - 59th Annual Reliability and Maintainability Symposium, RAMS 2013 - Proceedings and Tutorials
T2 - 59th Annual Reliability and Maintainability Symposium, RAMS 2013
Y2 - 28 January 2013 through 31 January 2013
ER -