Laser-ultrasonic inspection of Mg/Al castings

被引：0

作者：

Blouin, A ^{[1
]}

Lévesque, D ^{[1
]}

Monchalin, JP ^{[1
]}

Baril, E ^{[1
]}

Fischersworring-Bunk, A ^{[1
]}

机构：

[1] Natl Res Council Canada, Inst Ind Mat, Boucherville, PQ J4B 6Y4, Canada

来源：

Review of Progress in Quantitative Nondestructive Evaluation, Vols 24A and 24B | 2005年 / 760卷

关键词：

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

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.

引用

页码：329 / 336

页数：8

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