Ultrasonic inspection using the pitch-catch technique
The pitch-catch technique is useful in solving several problems which cannot be solved using conventional ultrasonic techniques. These include the inspection of multiple layer bonds, the measurement of weld penetration exceeding 30% of the wall thickness in a 2 to 3 mm thick weld, and the measurement of layer thickness in a multiple layer structure. In addition, the use of the pitch-catch technique coupled with a normal inspection has shown promising results in the development of a technique to measure wall thickness from one side which is independent of velocity variations in the material. Basically, the pitch-catch technique uses a geometrical configuration of two transducers to optimize the reflections from interfaces of interest and minimize unwanted reflections. Design considerations and results are given.
- Research Organization:
- Oak Ridge Y-12 Plant, TN
- OSTI ID:
- 5831561
- Journal Information:
- Mater. Eval.; (United States), Vol. 37:5
- Country of Publication:
- United States
- Language:
- English
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