A two-strain-gage technique for determining mode I stress-intensity factor

摘要: Abstract A finite element analysis and a experimental test were performed to show that the terms with r −1 2 1 in eigenfunction expansion of strains can describe crack tip strain distribution sufficient accuracy. set two linear equations be obtained determine stress intensity factor KI using only strain-gages. Errors within 5% achieved provided strain-gages are placed at appropriate locations. The technique developed treat bodies irregular geometry complex loading.