Software development for the reconstruction of source parameters by means of the R+D array

The reconstruction of signal parameters at the source (source parameters) is a main problem for the interpretation (classification) of acoustic emission sources. The problem is analysed here for the less complicated case of linear location. The report explains the efficiency of the programs developed for linear location, transfer corrections, and interpretation of the acoustic emission signals by means of real acoustic emission signals recorded during thermal shock experiments on a reactor pressure vessel nozzle. In this case, classification and separation of acoustic emission signals of the type 'crack growth' and 'crack border friction' is well feasible. (orig./HP)