Quantification of microdamage in slate tiles: Comparison of nonlinear acoustic resonance experiments with visual and x-ray diagnosis

Van Den Abeele, K.; Carmeliet, J.; Wevers, M.
July 2000
AIP Conference Proceedings;2000, Vol. 524 Issue 1, p307
Academic Journal
Single MOde Nonlinear Resonant Acoustic Spectroscopy (SIMONRAS) is applied to detect edgecracks in thin slate roofing tiles. The technique focuses on the acoustic nonlinear (i. e. amplitude dependent) response of a particular resonance mode of the material when driven at relatively small wave amplitudes. Undamaged materials are essentially linear in their resonant response. The same material, however, becomes highly nonlinear when cracked. The sensitivity of this method to discern damage due to edgecracking is compared to visual diagnosis of crack density and X-ray images of cracks.


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