Automatic analysis of acoustic emission measurements on concrete: Fid-Bau Portal

Automatic analysis of acoustic emission measurements on concrete

Kurz, J.H. / Finck, F. / Grosse, C.U.

Acoustic emission data contains a lot of information about the fracture process it was emitted from. A quantitative acoustic emission analysis permits detailed investigations on the fracture mechanics and the failure process. But often there are several thousand events from one fracture area. Doing the data analysis by hand is a very time consuming process and therefore often only a rudimentary analysis is performed. Furthermore, the data's signal to noise ratio is often very low. Therefore, the development of an automatic analysis method containing data conversion, denoising, localization, moment tensor inversion and other features from the field of statistical mathematics is indispensable. The general analysis concept is based on the model-view-controller (mvc) paradigm which is realized by using different development environments. Therefore, the software development packages MATLAB and LabVIEW were used. The connection of these two programmes via so called 'Formula Nodes' makes a fast development possible because the advantages of both packages can be used. Furthermore, external code (source code or dynamic link library) can be linked to the analysis environment. A good balance between transparency and automation of the processing steps themselves and the entire acoustic emission analysis should be reached.