Time of Flight Diffraction Level II
eLearning
This course provides comprehensive training in Time of Flight Diffraction (TOFD). It covers ultrasound fundamentals, TOFD theory, calibration, scanning techniques, and detailed data analysis with interactive exercises, concluding with a final exam to assess 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: 4.0
- Valid for ASNT Level III recertification: Yes
- Renewal Category: B
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.
ASNT partners with PhaseX to deliver this course. Enrollment is completed through ASNT’s learning management system, while coursework takes place on PhaseX’s learning platform.
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
Note: Completion of this eLearning course provides 40 hours of training toward the recommended training requirements outlined in SNT-TC-1A and is consistent with the training guidelines of NAS-410 and CP-189, EN 9712, and EN 4179, as applicable.
This training is one component of the overall qualification process and must be supplemented by required reading assignments and employer-sponsored hands-on practical training. Additional site- and application-specific training may be required in accordance with employer procedures and applicable standards.
Contact hours represent the estimated instructional time of this course, including assessments.
Completion of this course alone does not satisfy certification requirements. Final qualification and certification are the responsibility of the employer.
Supplemental reading recommendations are encouraged, especially for those who may be pursuing a career in this rapidly expanding technology.