Nonlinear scattering by a partially closed surface breaking crack
2005 (English)In: Review of Progress in Quantitative Nondestructive Evaluation, Vols 24A and 24B / [ed] Thompson, DO; Chimenti, DE, MELVILLE: AMER INST PHYSICS , 2005, Vol. 760, 43-50 p.Conference paper (Refereed)
Nonlinear scattering from a partially closed, two dimensional, surface-breaking crack in a homogenous linear elastic half-space is considered. The boundary conditions along the crack are described in terms of the mechanics of two distributions of nonlinear springs. Both the linear and the nonlinear acoustic response of the crack shows to be highest when the surface breaking crack is insonified by a shear vertical wave at the longitudinal critical angle. The increased efficiency of generation of higher harmonics under the above circumstances suggests a means of localizing the nonlinear crack. Finally, the model provides a simple interpretation of the highly localized nonlinear response of delaminations observed in thin composites.
Place, publisher, year, edition, pages
MELVILLE: AMER INST PHYSICS , 2005. Vol. 760, 43-50 p.
, AIP CONFERENCE PROCEEDINGS, ISSN 0094-243X ; 760
IdentifiersURN: urn:nbn:se:kth:diva-43197DOI: 10.1063/1.1916658ISI: 000228893300004ScopusID: 2-s2.0-33748579865ISBN: 0-7354-0245-0OAI: oai:DiVA.org:kth-43197DiVA: diva2:447904
31st Annual Review of Progress in Quantitative Nondestructive Evaluation. Colorado Sch Mines, Golden, CO. JUL 25-30, 2004
QC 201110132011-10-132011-10-132011-10-13Bibliographically approved