METHOD OF LASER-ULTRASOUND QUALITY CONTROL OF SOLDERED JOINTS

摘要

FIELD: instrumentation.;SUBSTANCE: scope of application: for laser-ultrasound quality control of the soldered joints. The essence of the invention is that using the pulse laser the optical pulses are generated, they are converted in the acoustic signal - series of ultrasound pulses creating the sounding ultrasound beam, the studied object is subjected to this beam action, the piezoreceiver receives the signals reflected from the studied object, they are analyzed, and based on the analysis results the object internal defects are estimated, at that the specified acoustic signal is formed as aperiodic sequence of ultrasound pulses with width from 5 to 20 ns with creation of the sounding ultrasound beam with diameter from 0.6 to 1.0 mm.;EFFECT: possibility of quality control of the soldered joints of thin cell double-wall steelworks.;4 dwg