Influence of Oxidation upon the Kaiser Effect of Acoustic Emission.
ARMY MATERIEL COMMAND TEXARKANA TEX INTERN TRAINING CENTER
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The objective of this research was to examine acoustic emission during reload of steel specimens. In particular, the role of oxidation upon acoustic emission during reload was investigated. Sixteen samples of AISI 1020 steel were loaded to 3100 pounds. Acoustic emission signals were recorded during loading. Then samples were divided into two groups and one of these groups immersed in Sears SAE 10-40 motor oil to retard oxidation. After two weeks, all specimens were reloaded. The tests were again monitored for acoustic emission. Conclusions indicate there is a significant decrease in acoustic emission during reload. There was no significant difference in acoustic emission from the two groups during reload indicating no effect of oxidation on acoustic emission.
- Metallurgy and Metallography