首页>
外文OA文献
>Band-limited Green's Functions for Quantitative Evaluation of Acoustic Emission Using the Finite Element Method
【2h】
Band-limited Green's Functions for Quantitative Evaluation of Acoustic Emission Using the Finite Element Method
展开▼
机译：使用有限元方法定量评估声发射的带限格林函数
展开▼
免费
页面导航
摘要
著录项
相似文献
相关主题
摘要
A method of numerically estimating dynamic Green's functions using the finite element method is proposed. These Green's functions are accurate in a limited frequency range dependent on the mesh size used to generate them. This range can often match or exceed the frequency sensitivity of the traditional acoustic emission sensors. An algorithm is also developed to characterize an acoustic emission source by obtaining information about its strength and temporal dependence. This information can then be used to reproduce the source in a finite element model for further analysis. Numerical examples are presented that demonstrate the ability of the band-limited Green's functions approach to determine the moment tensor coefficients of several reference signals to within seven percent, as well as accurately reproduce the source-time function.
展开▼
