Abstract:
Setting of the intersection of sound beams in TOFD testing is critical to the reliability of the detection results. In this paper, the characteristics of the diffracted sound field at different depths of the intersection of sound beams are simulated and analyzed. The effect of different depths of the intersection on the blind area of the scanning surface is tested through experiments, and the actual measurement is verified on the simulated test block. The results show that when the depth of the intersection point of the sound beam is 0.6
T, the coverage of the diffracted sound field to the detection area is better, and the blind area of the scanning surface is smaller, which is beneficial to improve the detection quality. This result can provide a reference for TOFD technicians to optimize the detection process.