Application of phase location to determine the coordinates of acoustic emission sources in glass samples with a crack

The method of acoustic emission is now widely used in the control and monitoring of hazardous production facilities, such as tanks and high-pressure pipelines of the petrochemical industry. The main advantage of the method is its integrality and the ability to determine the danger level of developing defects. In most cases the localization of defects is carried out with the use of algorithms, based on the analysis of differences of signal arrival times to the transducers in the piezoantenna. Sometimes this method of location is characterized by inadmissible error values, and in some cases, it is impossible at all. For example, when controlling the objects with limited access to the surface, on which the acoustic antenna cannot be placed. In this work we consider a method of source location, based on determining the phase difference with the use of a triangular antenna from closely spaced transducers. The method allows determining the direction to the source of acoustic emission signals. According to the results of experimental studies, it was found that the error in determining the direction does not exceed 9°.