Preparatory Notes for ASNT NDT Level III Examination - Ultrasonic Testing, UT

This application note contains quick reference information regarding selection
of high temperature transducers and couplants, and important factors
regarding their use. It covers conventional ultrasonic testing of materials at
temperatures up to approximately 500°C or 1000°F. In research applications
involving temperatures higher than that, highly specialized waveguide
techniques are used. They fall outside the scope of this note.
Testing Methods used:
Methods used to increase the useful range for high temperature application
are:
■
■
■
Delay Line
High temperature Couplants
Testing Techniques & Equipment Requirements