Genetic identification of crack-tip parameters using thermoelastic isopachics
Genetic identification of crack-tip parameters using thermoelastic isopachics
复制标题
使用热弹性等速线遗传识别裂纹尖端参数
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
K. Worden
中科院分区：
文献类型：
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作者：
J. Dulieu‐Barton;K. Worden
A curve-fitting routine based on a genetic algorithm is used to generate noise-free cardioid curves from thermoelastic data obtained from the neighbourhood of a crack-tip. The technique is benchmarked using simulated thermoelastic data. The generated cardioid curves are used to determine the stress intensity factors (SIFs) from slots and real cracks loaded in mode 1 and mixed-mode. The derived SIFs show excellent agreement with theory and confirm the validity of the approach. The curve-fitting approach allows more information to be obtained from the thermoelastic data than previous analysis routines and will provide a basis for further development of thermoelastic stress analysis for application in crack-tip stress studies.
