Time of Flight Diffraction Level II
eLearning
This course offers comprehensive training in Time of Flight Diffraction (TOFD) principles and practices. It covers ultrasound fundamentals, TOFD-specific theory, calibration, scanning techniques, and in-depth data analysis through interactive exercises and evaluations, concluding with a final exam to assess overall proficiency.
Course is now available in Spanish and English. Learners can alternate between languages within the course.
Member: $1215
Credit Info
- Contact Hours: 40
- IACET CEUs: N/A
- Valid for ASNT Level III recertification: Yes
Course Overview
This course provides a detailed introduction to the principles and application of Time of Flight Diffraction (TOFD) in ultrasonic testing. Beginning with a review of ultrasound fundamentals and instrument operation, the course progresses through the theory and practical use of TOFD, including probe setup, scanning techniques, and data analysis. Students engage with interactive exercises designed to reinforce technical concepts and develop hands-on skills. The course culminates in a comprehensive final exam and provides the foundational training necessary for certification and field application of TOFD techniques.
Upon Completion, Learners Will Have Covered:
- The basic principles of ultrasound and ultrasonic testing, including wave behavior, sound fields, and instrument components
- The structure and setup of TOFD systems, including probes, wedges, encoders, and digital instrumentation
- Wave propagation principles such as Snell’s law, Huygens’ principle, and diffraction
- Key calibration techniques including beam index point, wedge delay, and lateral wave adjustments
- A-Scan and B-Scan interpretation, lateral and backwall signal recognition, and depth and height calculations
- Factors affecting image quality such as beam spread, PCS, wedge angles, and digitizing frequency
- Techniques for optimizing data acquisition and analysis for weld inspections, including classification of indications
- The use of interactive tools for scanning, data capture, and signal evaluation
- Preparation for certification with a section review and a 50-question final exam
Questions? Contact us at education@asnt.org
This course is compliant with the requirements of EN4179 and NAS-410 for the training of eddy current inspectors.
Note: In addition to the online training, supplemental reading recommendations are encouraged, especially for those who may be pursuing a career in this rapidly expanding technology.