摘要
利用模糊数学及开率理论判断I型裂纹不扩展的可靠度,利用I型裂纹应力强度因子KI及裂纹扩展门槛值KIC建立裂纹扩展判据,结合模糊数学及概率论分析I型裂纹在受力情况下裂纹不扩展的模糊可靠度。
The degree of reliability for Ⅰmodel crack not extending could be evaluation by utilizing fuzzy mathematics and probability theory,according to the crack extension criterion established from the stress intensity factor KI and the propagation threshold value KIC. The fuzzy degree of reliability for the Ⅰmodel crack not extending under loadings could be obtained.
出处
《船海工程》
2009年第1期16-18,共3页
Ship & Ocean Engineering
关键词
模糊可靠度
Ⅰ型裂纹扩展
应力强度
fuzzy reliability model
Ⅰ crack extension
stress intensity factor
