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- W6810849 abstract "The scattering from rough surfaces and cracks in the high frequency regime is analyzed via a scattering formula based on the reciprocity relation. Scattering from the smooth cracks is investigated first to rederive the “flash point” concept by Fourier transform methods. Based on this analysis, an inversion procedure is proposed for obtaining the characteristic function of the crack, which, for the case of rough cracks, gives information about the roughness as well as the dimensions and shape of the crack. The theory is applicable to both 2-D and 3-D scattering problems, as well as surface wave scattering from surface breaking cracks. Elastodynamic ray theory predicts that scattering from cracks can be described in terms of discrete source points on the contour of the crack.1 These points are generally called the “flash points”, and their positions depend on the transmitter and receiver locations as well as the crack shape. For instance, for 2-D scattering problems, (or for deep surface breaking cracks under surface wave excitation), the two edges of the crack act as the flash points." @default.
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- W6810849 date "1983-01-01" @default.
- W6810849 modified "2023-10-14" @default.
- W6810849 title "Elastic Wave Scattering from Rough Surfaces and Cracks" @default.
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- W6810849 doi "https://doi.org/10.1007/978-1-4613-3706-5_39" @default.
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