Acoustic Emission Source Locations in Concrete

by E. Landis, Northwestern Univ, Evanston, United States,
C. Ouyang, Northwestern Univ, Evanston, United States,
S. P. Shah, Northwestern Univ, Evanston, United States,



Document Type: Proceeding Paper

Part of: Mechanics Computing in 1990's and Beyond

Abstract: The location of acoustic emission (AE) sources can potentially provide information on the fracture process zone in brittle materials such as concrete. Typical AE experiments generate very large data volumes. An algorithm is proposed here to automatically estimate AE source locations from estimated differences in compression wave arrival times at different AE transducers. The compression wave arrival times are determined by a two-phase filter. This source location algorithm allows very large volumes of AE data to be quickly analyzed, and serves as a platform for more advanced quantitative analysis techniques.

Subject Headings: Emissions | Acoustic techniques | Materials processing | Concrete | Algorithms | Compression | Travel time | Quantitative analysis

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