Q. Which of the following is not (!) a requirement of a couplant? (Solved)
1. Easy application
2. Highly penetrating
3. Harmless both to the test piece and transducers
4. Excludes all air between transducer and test piece
- b. Highly penetrating
1. Easy application
2. Highly penetrating
3. Harmless both to the test piece and transducers
4. Excludes all air between transducer and test piece