The Ultrasonic Thickness Testing course describes the basic principles of ultrasound as they apply to thickness testing of materials and components.

It concentrates on the compressional wave mode (sometimes referred to as longitudinal or “straight beam”) and provides a straight forward way to apply this technique for precise thickness measurements. The various transducers used and their advantages are presented and demonstrated including straight beam, delay line, dual element (“pitch-catch”). Variables such as surface conditions, coatings, configuration, couplant and material grain structure are all addressed, and a wide range of applications are included.

This lesson also demonstrates how to calibrate UT Thickness instruments including Digital and A-scan, take actual measurements, and collect/document results.

It is ideal for those individuals who will be taking thickness measurements with UT instruments and/or are pursuing Limited Level II UT Thickness certification. It is also applicable for those who will be providing oversight on UT Thickness operations.    

This course meets the recommendations for training as described in SNT-TC-1A.

NOTE: There is RECOMMENDED READING assigned at the beginning of the course. The completion of these assignments in addition to self-study is strongly encouraged and will add to the overall training benefit and time to be credited. It will also better prepare the student for the practical lab/’hands-on” session. It is recommended that the student a log of the self-study time. It is also recommended that the applicable Level III be involved and confirm that the reading and self-study assignments have been completed. This should become a part of the student’s training records which may be used in conjunction with subsequent certifications.