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Metals 2015, 5(1), 228-238; doi:10.3390/met5010228

Investigation of Material Performance Degradation for High-Strength Aluminum Alloy Using Acoustic Emission Method

1
,
1,†
,
2
and
1,†,*
1
National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China
2
Qishuyan Institute Co., Ltd., China South Locomotive & Rolling Stock Corporation Limited, Changzhou 213011, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Hugo F. Lopez
Received: 10 December 2014 / Accepted: 28 January 2015 / Published: 13 February 2015
View Full-Text   |   Download PDF [780 KB, uploaded 13 February 2015]   |  

Abstract

Structural materials damages are always in the form of micro-defects or cracks. Traditional or conventional methods such as micro and macro examination, tensile, bend, impact and hardness tests can be used to detect the micro damage or defects. However, these tests are destructive in nature and not in real-time, thus a non-destructive and real-time monitoring and characterization of the material damage is needed. This study is focused on the application of a non-destructive and real-time acoustic emission (AE) method to study material performance degradation of a high-strength aluminum alloy of high-speed train gearbox shell. By applying data relative analysis and interpretation of AE signals, the characteristic parameters of materials performance were achieved and the failure criteria of the characteristic parameters for the material tensile damage process were established. The results show that the AE method and signal analysis can be used to accomplish the non-destructive and real-time detection of the material performance degradation process of the high-strength aluminum alloy. This technique can be extended to other engineering materials. View Full-Text
Keywords: AE; material performance degradation; relative analysis; aluminum alloy; non-destructive; real-time AE; material performance degradation; relative analysis; aluminum alloy; non-destructive; real-time
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ai, Y.; Sun, C.; Que, H.; Zhang, W. Investigation of Material Performance Degradation for High-Strength Aluminum Alloy Using Acoustic Emission Method. Metals 2015, 5, 228-238.

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