Through static, modal and crackstress intensity factor analysis, the vibration stress of blade under rotating state before fracture can be calculated out finally.
The influence of inclusion on crackStress Intensity Factor(SIF) of Powder Metallurgy(PM) FGH 95 was investigated using singular element method with fine mesh at crack front.
Through analyzes around the wellbore stress field and the crackstress field, has established around separately the wellbore stress field model and the crack effective stress model.