Journal of applied mechanics
Online ISSN : 1884-832X
Print ISSN : 1345-9139
ISSN-L : 1345-9139
Shape Reconstruction of Defects and Effect of Frequency Range in Measurement
Kazuvuki NAKAHATAMichihiro KITAHARA
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2000 Volume 3 Pages 91-98

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Abstract

The linearized inverse scattering methods are applied to the shape reconstruction of defects in elastic body. The linearized methods are based on Born and Kirchhoff approximations for unknown displacement fields in the integral representation. To show the versatility of the methods, the experimental measurement is performed to collect the scattered waveforms from defects. The results show that the shape of defects can be reconstructed by the linearized methods with processed waveforms from ultrasonic measurement. It is shown that the scattered wave component in the low frequency range is important for the shape reconstruction.

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© by Japan Society of Civil Engineers
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