Laser-ultrasonic inspection of Mg\Al castings

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Proceedings titleReview of Progress in Quantitative Nondestructive Evaluation
Series titleAIP Conference Proceedings; no. 760
ConferenceThe 31st Annual Conference on Quantitative NonDestructive Evaluation, July 25-30, 2004, Golden, Colorado
Pages329336; # of pages: 8
AbstractLaser-ultrasonics is used to assess the metallurgical bond between Mg/Al materials in die-cast Magnesium/Aluminum composite. The acoustic impedances of Mg, Al and air are such that the amplitude of ultrasonic echoes reflected back from a void is many times larger than the amplitude of those reflected back from a well-bonded interface. In addition, the polarity of echoes from a void is inverted compared to that from a well-bonded interface. Laser-ultrasonic F-SAFT is also used for imaging tilted Mg/Al interfaces. Experimental setup, signal processing and results for detecting voids in the Mg/Al interface of cast parts are presented.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute
Peer reviewedYes
NRC number46961
NPARC number15955047
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Record identifiera9d4ee7b-b629-42bf-90ec-b8612ee2ac63
Record created2010-10-05
Record modified2016-05-09
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