METHOD FOR ACOUSTIC-EMISSIVE CONTROL OF CORROSION UNDER VOLTAGE Russian patent published in 2006 - IPC G01N29/14 

FIELD: technology for diagnosing corrosive cracking of material under voltage.

SUBSTANCE: spectrum of acoustic emission pulses is measured in broad frequencies range 0,02-2,0 MHz, analysis of thin structure of acoustic emission pulse spectrums is performed on appearance of two and more characteristic maximums of spectrum amplitudes, at personal computer display acoustic emission process is displayed in discontinuous representation in form of cubic bitmap image, by use of which as a result fractal dependence during destruction process is determined, on basis of time-based alternation of which in steps following are determined: moments of beginning of corrosive cracking, evolution of corrosive cracking, comparison is performed to threshold values of fractal units, appropriate for finalizing stage of corrosive self-destruction of sample.

EFFECT: increased precision of registration of corrosion cracking process.

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