Austenitic stainless steel has been widely used in today’s nuclear power and some of the chemical industry, but it is still more difficult that research using appropriate method to detect the weld defects.Based on time reversal, the decomposition of the time-reversal operator algorithm and multiple signal classification were used to denoise and comparatively analyze the simulate signals with SNR of -5dB and -10dB. In the experiment, a 16 element ultrasonic phased array probe was used to d...
