Ultrasonic Testing (UT)

This course provides students with the history, theory, and practical knowledge to become a Ultrasonic Testing Inspector and will prepare our students to take our certification examinations. This course will also prepare the inspector to perform Level I and Level II Ultrasonic testing responsibilities. Topics covering include both level I and Level II sections: essential and ethical duties of the Ultrasonic Testing Inspector, history and present state of Ultrasound, Physics of Ultrasound, Equipment and Transducers, Measurement Techniques, Calibration Methods and Applications. Topics that will also be covered, in Level II only, will be defect-ology, Codes (specifications, standards, and procedures) as they apply to Ultrasonic Testing, and interpretation of results.


Course Objectives

The objective of this course is to give a foundation in the history of ultrasonic testing, wave propagation, attenuation, mode conversion, piezoelectric transducers, transducer types, couplant, Pulser-Receiver. An understanding of normal beam inspection, angle beams and, spread spectrum. To perform calibration methods and DAC curves. Finally, the application of flaw detection and inspection of welded joints will be learned and demonstrated.

• To become familiar with types of Ultrasound and its properties.

• To analyze and understand the Acoustic Impendence, Snell’s Law and its application.

• To understand the Interaction of sound, matter and attenuation.

• To learn transducer and wave types and its effects.

• To determine the sound propagation in angle beam testing and straight beam testing.

• To read and interpret reflected signals on Ultrasound equipment.

• To be able to calibrate Ultrasound Units.

• To determine flaw size in weldments in different materials.


Course Structure

This course is designed to provide a hybrid experience, including classroom and hands-on training. This class will be divided in the following way:

80% Classroom Training

• Theory of Ultrasonic Testing

• Familiarity of transducers, wedges, UT machines, etc.

• Code and procedure clinics

20% Field Hands-On Training

• Calibration

• Familiarity with scanning test pipes and plates

• Field training based on job site location at time of class


Course Outline



• History

• Present Condition

• Future of Ultrasonic Testing

Physics of Ultrasound

• Wave Propagation

• Modes of Sound Waves

• Wavelength, Attenuation, and Elastic Properties

• Reflection, Refraction, and Snell’s Law

• Mode Conversion

• Wave Inference

Code Provisions

• American Welding Society (AWS)

• American Petroleum Institute (API)

• American Society of Mechanical Engineers (ASME)

Equipment and Transducers

• Piezoelectric Transducers

• Transducer Beam Spread

• Transducer Types

• Couplant

• Pulser – Receivers

• Impedance Matching

Measurement Techniques

• Normal Beam

• Angle Beam

• Signal Processing

Calibration Methods

• Calibration Methods

• DAC Curves

• Reference Standards


• Rail Inspection

• Weldments

Essential and Ethical Duties of the Inspector

• Duties and Responsibilities

• Notification of Discrepancies

• Inspection Report


Textbook and Course Material

• Personnel Training Publications: Ultrasonic Testing Classroom Training Book (ASNT)

• American Petroleum Institute (API) 1104 Piping Welding Code

• American Welding Society (AWS) D1.1 Structural Steel Welding Code


 Our philosophy at NDE Institute is based on our belief that the strongest inspectors are those who are trained with a focus on ethics and essential responsibilities.

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