Time-dependent failure credibility analysis and its optimization based computational methods

To measure the safety degree of the time-dependent structure under the fuzzy uncertainty, a time-dependent failure credibility (TDFC) is defined. The credibility measure has the excellent property of self-duality, thus the sum of the TDFC and the credibility of the time-dependent safety event, i.e., the complementary of the time-dependent failure event, equals to one. To solve the TDFC, two methods, including direct double-loop optimization...