Ultrasonic Testing I


The Ultrasonic Testing (UT) Level I course includes a basic introduction to the theory and principles of ultrasound including frequency, velocity, and wavelength.

It addresses the variables related to the propagation, reflection, and attenuation of sound as well as the responses from discontinuities. The various wave modes are presented in a comprehensive way so that the major wave modes are fully understood. These wave modes include compressional (longitudinal or straight beam), shear (transverse), surface (Rayleigh), and thin sheet (Lamb).

The student will be able to understand the display and to calibrate the UT instrument and identify the location of reflectors and discontinuities in various test specimens. UT equipment and transducers are demonstrated. UT is also used for precise thickness measurements and the basic procedure for this is also covered. A number of techniques and applications will also be presented including discussions on the data required for precise reporting.

This course is essential for those desiring to enter and specialize in UT. It is also beneficial for those who will not be practitioners but who want to understand the basic principles and applications of Ultrasonic Testing.


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.

At a Glance



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Availability to Course Materials

Course – 30 days
Exam – 10 more days

Course Length

Approximately 26 hours

Course Details

  • Benefits
  • Course Modules
    Meets all ASNT ANSI SNT-TC-1A recommendations per CP-105. Students can typically retain 25% to 60% more of the information as compared to traditional classroom training.
    Participants can access the course 24/7 from any computer running Google Chrome browser with an internet connection.
    Pause to take notes with ability to retake lesson quizzes as needed. Online learning gives the student complete control over their learning experience.
    Audio/Video narration, demonstrations, animated graphics and video footage make even the most complex topics engaging and easy-to-understand.
    Detailed video demonstrations, practice problems, and quizzes facilitate the mastery of concepts and measure content retention.
    Course content was developed by Chuck Hellier with industry experts and NDT Classroom Inc. learning professional Kevin Crosby, Phd in curriculum design.
    Users can contact NDT Classroom instructors by emailing or calling 716-262-8870.
    NDT Classroom customer support Monday through Friday 8:30 AM to 5:00 PM EST. at or 716-262-8870

Ultrasonic Testing I Chapter 1 – Introduction

Ultrasonic Testing I Chapter 2 – History

Ultrasonic Testing I Chapter 3 – Qualification and Certification

Ultrasonic Testing I – Quiz 1

Ultrasonic Testing I Chapter 4 – Basic Math

Ultrasonic Testing I Chapter 5 – Acoustics

Ultrasonic Testing I – Quiz 2

Ultrasonic Testing I Chapter 6 – Wave Modes

Ultrasonic Testing I – Quiz 3

Ultrasonic Testing I Chapter 7 – Training Exercise

Ultrasonic Testing I Chapter 8 – Transducers

Ultrasonic Testing I – Quiz 4

Ultrasonic Testing I Chapter 9 – Test Instruments

Ultrasonic Testing I – Quiz 5

Ultrasonic Testing I Chapter 10 – Calibration

Ultrasonic Testing I – Quiz 6

Ultrasonic Testing I Chapter 11 – Demonstrations: Olympus 38DL Plus and Olympus EPOCH 600

Ultrasonic Testing I Chapter 12 – Demonstration: GE DMS Go

Ultrasonic Testing I Chapter 13 – Closing

Ultrasonic Testing I – Final Exam

Frequently Asked Questions

  • How much do I need to know before taking this course?

    You don’t need to have any background in NDT to take this course. It will prepare you to take the practical training needed to become certified by your employer.

  • Who should take this course?

    Anyone interested in expanding their welding career to examine welds and other types of materials and products.

  • How long do I have to complete this course?

    You have 30 days to take the course and 10 days to complete the exam.

  • Does this course include a completion exam?

    Yes, you will not only take quizzes after many of the chapters, there is a final exam after the successfully complete the course.

  • Do I need to purchase any other materials?

    We recommend you use the ASNT classroom Guide Book Item Number: 1642.

  • Does the time I spend in this course count towards the recommended number of training hours per ASNT SNT-TC-1A?

    Yes, all of the time you spend in the course, any reading time and hands on practical training all count towards the recommended number of training hours.

  • Can I use these hours for recertification?

    Yes, you can use this time towards your recertification.

  • What platforms and devices can I use to view the courses?

    You must be connected to the internet to access our online courses. We support the most recent versions of Google Chrome, Firefox, Safari, and Internet Explorer. Courses can be viewed on desktops, laptops, tablets, and mobile phones. Note, however, that a high speed internet connection and large screen offer a better user experience.





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