Ultrasonic nondestructive testing system

According to the ultrasonic nondestructive testing system provided by the utility model, two paths of excitation signals are input into the ultrasonic probe in a differential form, so that the excitation voltage of the transmitting end is multiplied, the ultrasonic energy of the transmitting end is increased accordingly, and the amplitude of an ultrasonic echo signal of the receiving end is also increased accordingly; according to the mode of improving the excitation energy and the receiving energy from the source, the amplification factor of a later signal processing link can be multiplied, so that the detection depth is improved, and the detection accuracy is improved; an ultrasonic echo signal is subjected to analog-to-digital conversion after signal processing, a digital signal processing link is added, white noise and structural noise in the ultrasonic echo signal are inhibited, the signal-to-noise ratio is improved, defect echoes are more obvious, and therefore the detection accuracy is improved. 本实用新型提