원문정보
초록
영어
Acoustic emission signal is a kind of elastic wave which is caused by the release of internal energy of materials when the structure changes. The propagation characteristics of acoustic emission is important to the testing technology of a structure by acoustic emission signal. The finite element method is introduced to analyze elastic wave propagation in plate structure in the article, which mainly contains the discretization techniques of the area and time domain. The structure plate with different materials ,style and coating metal are selected in finite element simulation, the displacement contours and wave curve resulted from simulation are used to analyze the interface reflection, refraction and diffraction process as well as the wave type conversion in different medium of the elastic wave propagation . The mechanical pencil lead fracture experiment is done to verify the transient simulation of elastic wave propagation in plate structure.
목차
1. Introduction
2. Finite Element Numerical Method
2.1 Equations of Motion
2.2. Acoustic Emission Wave Propagation in Plate Structure with Homogeneous Material
3. Acoustic Emission Wave Propagation in Plate Structure with Different Material
4. Acoustic Emission Propagation in Plate Structure with Multilayer Medium
5. Comparison of the Simulation and Experimental Verification
6. Conclusion
Acknowledgements
References