DETERMINING THE SIZE AND LOCATION OF TRANSVERSE CRACKS IN BEAMS

被引:23
作者
DOYLE, JF
机构
[1] Purdue University, West Lafayette, 47907, IN
关键词
D O I
10.1007/BF02319668
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The spectral element method, which is very suitable for solving inverse dynamic problems, is combined with a stochastic genetic algorithm to give a scheme that can locate and size cracks in structural components. The mechanical model is based on an approach that separates the global structural dynamics from the local crack-tip zone dominated by singular stresses. The global model, consisting of connected waveguides, describes the structural dynamics using spectral elements. The local model, describing the crack-tip behavior, is based on the relation between the stress-intensity factor and the stored strain energy representing the crack region. The results are demonstrated with experimental data from an aluminum beam with a transverse crack.
引用
收藏
页码:272 / 280
页数:9
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