Band-limited green's functions for quantitative evaluation of acoustic emission using the finite element method

William P. Leser, Fuh Gwo Yuan, John A. Newman

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

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 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.

原文English
主出版物標題54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
DOIs
出版狀態Published - 2013
事件54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Boston, MA, United States
持續時間: 2013 4月 82013 4月 11

出版系列

名字54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

Other

Other54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
國家/地區United States
城市Boston, MA
期間13-04-0813-04-11

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 材料力學
  • 建築與營造
  • 建築

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