Acoustic emission monitoring of split formation during Charpy impact testing of high strength steel

Authors

Andrii Kostryzhev, University of BirminghamFollow
R B. Punch, University of Birmingham
Claire L. Davis, University of Birmingham
Martin Strangwood, University of Birmingham

RIS ID

94308

Publication Details

Kostryzhev, A. G., Punch, R. B., Davis, C. L. & Strangwood, M. (2012). Acoustic emission monitoring of split formation during Charpy impact testing of high strength steel. Materials Science and Technology, 28 (2), 240-242.

Abstract

Acoustic emission (AE) monitoring has been used to detect split formation during room temperature low blow Charpy impact testing of high strength thick strip steels. The AE signal analysis identified separate signals originating from hammer impact, plastic deformation (verified using Charpy impact testing on mild steel with no splits) and split initiation/growth. The presence of splits was confirmed by sectioning and fractography, and the splits were brittle in nature. A possible correlation between the AE signal features and fracture mode is presented.