Detection of kissing bond in extruded aluminum by laser-ultrasound

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Proceedings titleReview of Progress In Quantitative Nondestructive Evaluation: 34th Annual Review of Progress in Quantitative Nondestructive Evaluation
Series titleAIP Conference Proceedings; no. 975
Conference34th Annual Review of Progress in Quantitative Nondestructive Evaluation, July 22-27, 2007, Denver, Colorado
Pages279285; # of pages: 7
Subjectadhesion; nondestructive testing; extrusion; Kissing bond defect; high frequency ultrasound; aluminum; signal-to-noise ratio; backwall echo
AbstractKissing bond defects can occur in solid state joined metals, like friction stir welded aluminum or hollow aluminum extrusions produced by means of porthole dies, and its nondestructive detection is crucial for many structural applications. In this paper, high frequency ultrasound generated and detected by lasers is applied to detect kissing bonds in extruded aluminum parts. It is found that an echo from the kissing bond discontinuity could be detected when the system has a signal-to-noise ratio (based on the backwall echo) of at least 40 dB in the frequency range of a few hundred MHz.
Publication date
PublisherAmerican Institute of Physics (AIP)
Copyright noticeMaterial in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission.
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute
Access conditionavailable
Peer reviewedYes
NRC number49661
NPARC number15812357
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Record identifierc415ca17-3110-4907-8b8f-f6bb293ff0ec
Record created2010-07-14
Record modified2016-05-09
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