Acoustic emission (AE) was measured on four kinds of isotropic graphites under tensile and compressive loading. Observed AE events can be divided into two types, with low and high relative energy. The events with low relative energy were initially observed under a low stress level, continued to the
Analysis of microfracture mechanism of titanium alloy by acoustic emission technique
β Scribed by S. Mashino; Y. Mashimo; T. Horiya; M. Shiwa; T. Kishi
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 351 KB
- Volume
- 213
- Category
- Article
- ISSN
- 0921-5093
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The acoustic emission (AE) technique is a very useful tool for in situ investigations of the processes of plastic deformation during tensile or compression tests. Three magnesium alloys, AM60, AM50 and AM20 were investigated. Tensile tests were performed in the temperature range from 20 to 300 β’ C.
Cast AZ31 magnesium alloy was deformed in tension and compression at temperatures between 25 and 350 β’ C and at a constant strain rate of 10 -3 s -1 . Measurements of the acoustic emission (AE) during testing are presented and related to the microstructure of the sample material. The AE count rates