Polished, flat surfaces are undesirable for ultrasonic testing consideration because:

Related MCQs

• In ultrasonic testing, a liquid coupling medium between the crystal surface and the part surface is necessary because :
• 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:
• On the area-amplitude ultrasonic standard test blocks, the flat-bottomed holes in the blocks are:
• A common use of ultrasonic testing is:
• Ultrasonic testing is:
• Typical ultrasonic testing frequencies are:
• 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:
• In a basic ultrasonic test pattern (A scan) for contact testing, the initial pulse (assume no sweep delay is used):
• Entry surface resolution is a characteristic of an ultrasonic testing system which defines its ability to:
• Most commercial ultrasonic testing is accomplished using frequencies between: