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| Numerical Simulation Research On Response Characteristic 0f OPCM In Acoustic Emission Monitoring of Pipe |
| ZHAO guo-qi, SHEN yi |
| Faculty of Science, Jiangsu University, Zhenjiang 212013, China |
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Abstract Found the 2-D FEM(finite element model) of pipe structure to simulate the generation and spread about a sort of acoustic emission(AE). By coupling the correlative nodes displacement degrees of Freedom, the two dimension AE wave become three dimension to inspirit the OPCM affixed on the surface of pipe. Read the node volt to simulate the output of sensor, and made Time-Frequency Analysis of the outputting signal based on Margenau-Hill energy distributing, discuss response characteristic of OPCM in the circumstance of no noise, advocate the theory mode and design method for future sensor used in AE monitoring of pipe.
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Received: 08 August 2013
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