METHOD FOR ACOUSTIC EMISSION CONTROL Russian patent published in 2013 - IPC G01N29/14 

FIELD: measurement equipment.

SUBSTANCE: receiving converters are placed on the surface of a monitored object, the most probable speed of acoustic waves in the monitored object is defined, as well as the time of AE signals arrival to the converters, signals are filtered by criteria of membership to a single act in a source of AE, location of the AE source is located as a coordinate of points on the surface of the monitored object, corresponding to the single acts of AE, the location of the AE source is confirmed by combination of points into a cluster by criteria of density of grouping of points on the surface of the monitored object, at the same time they additionally determine intervals of possible values of the speed of acoustic waves, in the specified range of working frequencies, and the speed of waves is determined from N values of speed in the selected intervals, for each single act of AE, corresponding to the point on the surface of the monitored object, which is outside the cluster, coordinates of N points are detected for each of N values of speed, and the single act of AE is included into the AE source, if at least one of the N points gets in the cluster, and the image of the AE source and the extent of defect risk are determined with account of entire combination of AE acts, included into the cluster.

EFFECT: improved validity of monitoring.

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