Laser-Ultrasonic Inspection of MG/AL Castings | Zendy

Alain Blouin | Zendy

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Laser-Ultrasonic Inspection of MG/AL Castings

Author(s) -

Alain Blouin

Publication year - 2005

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.1916695

Subject(s) - materials science , ultrasonic sensor , void (composites) , laser , aluminium , laser ultrasonics , ultrasonic testing , composite number , amplitude , acoustics , composite material , metallurgy , optics , optoelectronics , diode pumped solid state laser , distributed feedback laser , wavelength , physics

Laser-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.Peer reviewed: YesNRC publication: Ye

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