Experimental Study of crack propagation in carbon steel using acoustic emission

Zohora, Fatematuz, Tan, Andy C.C., Kaphle, Manindra R., & Fawzia, Sabrina (2014) Experimental Study of crack propagation in carbon steel using acoustic emission. In Shiotani, T., Wakayama, S., Yuyama, S., & Moriya, H. (Eds.) Proceedings of Progress in Acoustic Emission, The Japanese Society of Non-Destructive Inspection, Sendai, Japan, pp. 129-136.

Abstract

Acoustic emission technique has become a significant and powerful structural health monitoring tool for structures. Researches to date have been done on crack location, fatigue crack propagation in materials and severity assessment of failure using acoustic emission technique. Determining severity of failure in steel structures using acoustic emission technique is still a challenge to accurately determine the relationship between the severity of crack propagation and acoustic emission activities. In this study three point bending test on low carbon steel samples along with acoustic emission technique have been used to determine crack propagation and severity. A notch is introduced at the tension face of the loading point to the samples to initiate the crack. The results show that the percentage of load drop of the steel specimen has a reciprocal relationship with the crack opening i.e. crack opening zones are influenced by the loading rate. In post yielding region, common acoustic emission signal parameters such as, signal strength, energy and amplitudes are found to be higher than those at pre-yielding and at yielding.

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ID Code: 80885
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 [please consult the author]
Deposited On: 21 Jan 2015 22:39
Last Modified: 02 May 2015 06:14

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