Estimation of Damage with Acoustic Emission Nonlinear Behavior Model
It is very important to monitor and estimate the damage states of Q345 steel structures because that these structures would deform and damage with long working hours. Therefore, this study researched the damage monitoring and estimation of Q34S steel structures. This study presents an acoustic emission nonlinear behavior model which consists of acoustic emission (AE) cusp catastrophe model and review model to estimate the time at which the state of Q34S steel will change from elastic deformation to yield deformation. Firstly, the tensile test of Q345 steel plate specimens was monitored with acoustic emission technique, and a acoustic emission nonlinear behavior model was establish based on cusp catastrophe theory. Secondly, some catastrophe time was estimated with AE cusp catastrophe model. Finally, all catastrophe time was rechecked by the review model, and the state catastrophe time at which the state of Q345 steel would change from elastic deformation to yield deformation was obtained. The experimental results show that the AE nonlinear behavior model can estimate the time at which the state would change from elastic deformation to yield deformation of Q345 steel in tensile test. Therefore, the acoustic emission nonlinear behavior model is helpful to monitor the safety and reliability of Q345 steel structure on line.
Q34S steel nonlinear behavior damage sigles
Hongwei Wang Hongyun Luo Zhiyuan Han Qunpeng Zhong Chao Wang
Institute of Industrial Product Inspection, Chinese Academy of Inspection and Quarantine, Beijing, 1 Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials S Institute of Industrial Product Inspection, Chinese Academy of Inspection and Quarantine, Beijing, 1
国际会议
三峡
英文
149-152
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）