Autor: |
Skal's'kyi, V. R., Lysak, M. V., Vainman, A. B. |
Zdroj: |
Materials Science; July 1995, Vol. 30 Issue: 4 p484-490, 7p |
Abstrakt: |
We analyze the characteristics of acoustic emission (AE) observed in the process of mechanical testing of hydrogenated and hydrogen-free specimens of thermal power equipment in uniaxial tension and three-point bending. It is shown that, in both cases, AE signals in hydrogenated specimens appear at earlier stages of loading than in hydrogen-free specimens. We suggest the use of this phenomenon in detecting hydrogen-induced damage to steel. It is discovered that the deposition of scale on the surface of pipes makes the interpretation of received AE information much more complicated. |
Databáze: |
Supplemental Index |
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