AA test method employing two seperate search units on opposite surfaces of the material being tested is called:

Related MCQs

• 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:
• Ultrasonic testing of material where the search unit is in direct contact with the material being tested may be:
• 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:
• The echo on the cathode ray tube (CRT) which represents the far boundary of the material being tested is called:
• Which of the following characteristics would be most important in a test piece which is to be tested using the residual method?
• Which of the following describes the sound field propagating in a piece of steel bar stock which is being tested from one end with longitudinal waves?
• A soft aluminium test piece is to be penetrant tested. The piece has previously been sand blasted to remove tightly adhering soils. What additional surface preparation should be performed?
• When testing a test piece with parallel front and back surfaces, no back wall echo can be obtained. Which of the following actions might enable you to obtain a back wall echo?
• According to ASTME 709-95 and API, in order to eliminate all contaminants, an appropriate cleaning shall be performed on all the surfaces to be examined and on a minimum of adjacent material:
• When using a straight beam technique to examine a thick test piece what change(s) would you expect to see in back wall echo size as you approach the side of the test piece? (Transducer remains completely on test piece)