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

Metals

Chang Sun¹  Weidong Zhang¹  Yibo Ai¹  Hongbo Que² 

[1] National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China; E-Mails:;Qishuyan Institute Co., Ltd., China South Locomotive & Rolling Stock Corporation Limited, Changzhou 213011, China; E-Mail:

关键词: acoustic emission;    aluminum alloy;    tensile damage;    quantification model;   

DOI  :  10.3390/met5042186

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.