Estimation of Dynamic Stress Intensity for One-Point Bend Specimen by Inverse Analysis(Fracture Mechanics) Estimation of Dynamic Stress Intensity for One-Point Bend Specimen by Inverse Analysis
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The inverse method applied successfully to several basic structures is extended to estimate dynamic stress intensity-time history for one point bend specimens. The response functions of the specimens are estimated by de-convolving the specimen response measured near the crack tip with the measured impact force. Two methods of deconvolution were used, e. g., a simple statistical method and a CG-FFT iteration method. The ill-posed nature of the deconvolution is removed successfully by the CG-FFT method and then the excellent estimation is obtained.
- JSME International Journal Series A
JSME International Journal Series A 45(3), 388-394, 2002-07-15
The Japan Society of Mechanical Engineers