Determination of the sensitivity of transverse wave detection in high pressure seamless steel tube
- Apr 21, 2018 -


1, can be directly in the reference block of artificial sharp angle groove reflected echo amplitude to the screen full scale of 50%, as a benchmark sensitivity.

  

2, for the internal and external surface processing groove comparison test block, the internal surface groove should be the echo amplitude of the full scale of 80%. Then the amplitude point of reflection echo of outer surface groove is marked on the phosphor screen to make a amplitude curve of distance. 3, detection sensitivity should be higher than the benchmark sensitivity of 6dB.