Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1640431 | Transactions of Nonferrous Metals Society of China | 2006 | 4 Pages |
Abstract
The damage characteristic of particle reinforced metal matrix composite (PMMC) was studied by ultrasonic non-destructive evaluation method. After the sample was damaged induced by tensile load, the ultrasonic wave that propagated in the sample were collected. The damage parameter was defined by ultrasonic parameter and the wave signals were analyzed by correlation method. The results show that with the increase of tensile load, the damage parameter increases and the correlation coefficient decreases. The fracture section morphologies of PMMC under tensile load were observed by SEM. It is found that there are many concaves in the metal matrix. Therefore the damage evolution can be concluded. The initial damage is induced by void nucleation, growth and subsequent coalescence in the matrix or interface separation.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
YANG Zhi-guo, LONG Shi-guo,