Q. During immersion testing of pipe or tubing the incident longitudinal wave angle mustbe limited to a narrow range. The reason for the upper limit is: (Solved)
1. To avoid complete reflection of ultrasound from the test piece
2. To prevent formation of Rayleigh waves
3. To prevent formation of shear waves
4. To avoid saturating the test piece with ultrasound
- a. To avoid complete reflection of ultrasound from the test piece