METHOD OF LASER-ULTRASOUND quality control of solder joints

摘要

A method of laser ultrasonic testing of the quality of solder joints, comprising the steps of: generating a pulsed laser optical pulses, convert them into an acoustic signal - a sequence of ultrasonic pulses forming a probe ultrasonic beam is irradiated this beam the object under study, taking piezoreceiver reflected from the object signals were analyzed and the results of their analysis are judged on internal defects of the object, characterized in that said acoustic signal is generated as a aperiodic sequence of ultrasonic pulses with a duration of 5 to 20 nanoseconds to form a probe of the ultrasonic beam with a diameter in the range of 0.6 to 1.0 mm.