The direct and inverse problems of reflection, transmission and diffraction of elastic waves by a large fluid-filled crack have been investigated. The crack is assumed to be planar. The effects of edge diffraction have been discussed on the basis of ray theory and the geometrical theory of diffraction. The inversion procedure is based on measured travel times. As an example, a segment of the edge of an elliptical crack has been mapped by the use of synthetic travel times from twenty source positions to two points of observation.
|Original language||English (US)|
|Number of pages||6|
|Journal||Alternative Energy Sources: Proceedings of the Miami International Congress on Energy and the Environment|
|State||Published - Jan 1 2017|
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