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Change estimation of damage with acoustic emission nonlinear behavior model
Wang Hongwei, Luo Hongyun, Han Zhiyuan, Zhong Qunpeng*
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ �����������������ģ������������16Mn����������������е�����״̬��ת��.����,����������ͻ��ģ��,�ж���������������дӵ�������״̬ת��Ϊ��������״̬���ܵ�ʱ���.Ȼ��,����������������ص��ͻ�����ı仯,����������ͻ�临��ģ��,�Ӷ��õ���������������дӵ�������״̬ת��Ϊ��������״̬ȷ�е�ʱ���.����������:Ӧ�������������ģ�Ϳ��Կ��١�Ԥ��Ԥ�����������״̬��ת��.
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Abstract�� An acoustic emission nonlinear behavior model which consists of acoustic emission (AE) cusp and review model was established, which can estimate the changed time at which the state of 16Mn steel was changed from elastic deformation to yield deformation. Firstly, some preliminary changed time at which the state of 16Mn steel plate specimen might be changed from elastic deformation to yield deformation was estimated with AE cusp model. Next, all preliminary changed time was rechecked by the review model, and the analytical changed time from elastic deformation to yield deformation of 16Mn steel was obtained. The experiment results show that the analytical changed time which was estimated by acoustic emission nonlinear behavior model was ahead of the actual time which was estimated by the load-time curve. Therefore, the acoustic emission nonlinear behavior model is helpful to monitor the safety and reliability of 16Mn steel structure on line.
Keywords�� nonlinear analysis   acoustic emission testing   estimation     
Received 2009-09-17; published 2010-11-12
About author: ����ΰ(1978-),Ů,ɽ��������,��ʿ��,wanghongwei-1978@163.com.
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����ΰ, �����, ��־Զ, ��Ⱥ��.���������������ģ�͵�����״̬ת�������[J]  �������պ����ѧѧ��, 2010,V36(10): 1225-1228
Wang Hongwei, Luo Hongyun, Han Zhiyuan, Zhong Qunpeng .Change estimation of damage with acoustic emission nonlinear behavior model[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(10): 1225-1228
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