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Metals 2015, 5(4), 2186-2199; doi:10.3390/met5042186

Study of the Tensile Damage of High-Strength Aluminum Alloy by Acoustic Emission

1
,
1,†,* , 1,†
and
2
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: 11 October 2015 / Revised: 16 November 2015 / Accepted: 18 November 2015 / Published: 25 November 2015
View Full-Text   |   Download PDF [677 KB, uploaded 25 November 2015]   |  

Abstract

The key material of high-speed train gearbox shells is high-strength aluminum alloy. Material damage is inevitable in the process of servicing. It is of great importance to study material damage for in-service gearboxes of high-speed train. Structural health monitoring methods have been widely used to study material damage in recent years. This study focuses on the application of an acoustic emission (AE) method to quantify tensile damage evolution of high-strength aluminum alloy. First, a characteristic parameter was developed to connect AE signals with tensile damage. Second, a tensile damage quantification model was presented based on the relationship between AE counts and tensile behavior to study elastic deformation of tensile damage. Then tensile tests with AE monitoring were employed to collect AE signals and tensile damage data of nine samples. The experimental data were used to quantify tensile damage of high-strength aluminum alloy A356 to demonstrate the effectiveness of the proposed method. View Full-Text
Keywords: acoustic emission; aluminum alloy; tensile damage; quantification model acoustic emission; aluminum alloy; tensile damage; quantification model
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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

Sun, C.; Zhang, W.; Ai, Y.; Que, H. Study of the Tensile Damage of High-Strength Aluminum Alloy by Acoustic Emission. Metals 2015, 5, 2186-2199.

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