ULTRASONIC THICKNESS TESTING

Course Overview

This course addresses the required training by documents controlling the certification program, such as NAS-410, SNT-TC-1A, and NavSea Technical Publication T9074-AS-GIB-010/271. This course content conforms to the training subjects listed in ANSI/ASNT CP-105, Standard Topical Outlines for Qualification of Nondestructive Testing Personnel. It is intended that the course shall include the online training as well as laboratory-type hands-on training under the direction of a level II or level III to meet the total hours of training required by the applicable certification document listed above.

Upon Completion, Learners Will Have Covered:

• Ultrasonic sound and particle displacement; particle density and elasticity as it affects the velocity of sound, cycles, wavelength, frequency, and hertz
• Piezoelectric crystals, transducer parts, generating ultrasound, pulse echo, and continuous sound transmission; equipment controls
• Velocity as it relates to thickness determination, acoustic impedance, interface definition, ultrasonic wave modes and properties, mode conversion, refracted angles, Snell’s Law
• Couplant; surface effects on sound transmission; sound reflection; near field and far field definition; attenuation definition
• “A”, “B”, and “C” scan presentations; digital readout and “A” scan ultrasonic thickness testing units; painted surface testing
• Transducer capabilities, efficiencies, different types of transducers for testing, pitch catch transducer, and connectors for transducers
• Calibration standard types and materials; selection of equipment and transducers
• Signal display attributes for “A” scan presentations: broadband and narrowband waveforms
• Testing variables such as surface condition, doubling, gating, discontinuities, temperatures, records, and types of couplants
• Qualification and certification documents, and a review of SNT-TC-1A

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

NOTE: 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.

Meet the Instructor

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  Gary Larson

  Gary Larson brings over 40 years of NDT experience across industries including nuclear, aerospace, and manufacturing. He holds ASNT Level III certifications in RT, UT, PT, MT, and VT, along with ACCP credentials. Gary has worked with Sikorsky and Pratt & Whitney, providing inspection and training in multiple methods. He currently consults as a Level III for aerospace and military suppliers and contributes to ASTM’s E07 Committee. His teaching experience includes developing and delivering online NDT courses.