In immersion testing, the position of the search unit is often varied to transmit sound into the test part at various angles to the front surface. Such a procedure is referred to as:

Related MCQs

• In immersion testing, verification that the search unit is normal to a flat entry surface is indicated by:
• AA material used between the face of a search unit and the test surface to permit or improve the transmission of ultrasonic vibrations from the search unit to the material being tested is called:
• During ultrasonic testing by the immersion method, it is frequently necessary to angulate the search unit when a discontinuity is located at an angle in order to:
• A calibration for immersion ultrasonic testing of pipe or tubing should establish a transducer position such as:
• An ultrasonic test using a straight beam contact search unit is being conducted through the thickness of a flat part such as a plate. This test should detect:
• A A widening of the front surface indication, when testing a rough surface, is caused by:
• When variations are noticed in the front surface reflection, the test piece should be inspected for possible near surface discontinuities by:
• An advantage of immersion testing is that:
• An advantage of immersion testing is that:
• 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: