CHARACTERIZATION OF STRESS CORROSION CRACKING OF CuZn-ALLOYS BY ACOUSTIC EMISSION TESTING

摘要

This paper presents the results of the investigation for the characterization of stress corrosion cracking of CuZn-alloys using acoustic emission (AE) testing. The slow strain-rate test and the constant load test of various brass-alloys in a 0.5-molar sodium nitrite solution are carried out and the AE activity during these tests is recorded. The information provided by the AE hit counts, the amplitude and AE energy as well as the waveform of the AE signal is analyzed. The results show the possibility to predict the SCC-susceptibility of brass using AE testing.