Methods to analyze diffraction of elastic waves by cracks are discussed. After a review of some elastodynamic theory, integral equations governing the crack-opening displacements are considered for both interior and surface breaking cracks. For specific geometries these integral equations have been solved numerically, and the results have been substituted in an appropriate theorem for the scattered displacement field. Particular attention has been devoted to amplitude spectra in the high-frequency range, which have been compared with approximate results obtained on the basis of elastodynamic ray theory. Some comparisons with experimental results are also included.
ASJC Scopus subject areas
- Aerospace Engineering