During immersion testing of pipe or tubing the incident longitudinal wave angle must be limited to a narrow range. The reason for the upper limit is:

To prevent formation of Rayleigh waves

To avoid complete reflection of ultrasound from the test piece

To prevent formation of shear waves

To avoid saturating the test piece with ultrasound

During immersion testing of pipe or tubing the incident longitudinal w

1.	During immersion testing of pipe or tubing the incident longitudinal wave angle must be limited to a narrow range. The reason for the upper limit is:
A.	To avoid complete reflection of ultrasound from the test piece
B.	To prevent formation of Rayleigh waves
C.	To prevent formation of shear waves
D.	To avoid saturating the test piece with ultrasound
Answer» B. To prevent formation of Rayleigh waves