Ultrasonics Level 1

Course Overview

Training Objectives
This course provides a basic knowledge of ultrasonic testing fundamentals sufficient to enable the technician to carry out ultrasonic testing to established procedures under the supervision of Level 2 or Level 3 personnel.

Applicable Standards
This course meets the training syllabus requirements of CAN/CGSB-48.9712, ISO 9712 and SNT-TC-1A.

Responsibilities of Level 1 Personnel (as per CGSB)
Level 1 personnel are defined as personnel who properly perform specific calibrations and specific evaluations for acceptance or rejection determinations, according to written instructions, and record results. Level 1 carry out industrial ultrasonics under the supervision of Level 2 or Level 3 personnel and shall receive the necessary instructions from a Level 2 or Level 3 individual.

Course Outline

  • Historical perspective of the use of ultrasound
  • Comparison with other commonly used NDT methods
Fundamental Properties of Ultrasound
  • Definition of ultrasonic vibrations
  • Relationship of frequency velocity and wavelength
  • Diffraction theory
  • Modes of particle vibration
  • Ultrasound uses
Generation of Ultrasonic Waves
  • Piezoelectric crystal types and characteristics
  • Search unit construction
  • Search unit characteristics: resolution; sensitivity
  • Search unit types: single element; dual element; Angle beam
Test Material Characteristics
  • Velocity
  • Sound attenuation
  • Acoustic impedance
Sound Beam Characteristics
  • Dead zone; Near zone; Far zone
  • Intensity variations
  • Probe diameter and frequency effect
Angular Incidence
  • Reflection
  • Transmission
  • Refraction
  • Mode conversion
  • Critical angles
  • Snell's Law
Ultrasonic Inspection Techniques
  • Through transmission
  • Pulse echo
  • Angle beam
  • Contact testing
  • Immersion testing
Ultrasonic Testing Equipment
  • Basic pulse echo instrument
  • Control functions and uses
  • Information displays: A scan, B scan, C scan, digital readouts
  • Computer enhanced displays
Ultrasonic Reference Blocks
  • Area amplitude blocks
  • Distance amplitude blocks
  • International Institute of Welding (IIW) block
  • Miniature angle beam calibration block
  • Uses of artificial reflectors compared
Inspected Part Variations
  • Effect of surface roughness
  • Effect of surface coatings
  • Surface curvature
  • Parallelism
  • Grain size
Discontinuity Variations
  • Size
  • Shape
  • Orientation
  • Distance from entry surface

Note: Participants are requested to have a calculator capable of scientific notation. Safety shoes are mandatory for all laboratory work.

This course is offered in partnership with Canadian Institute for Non-Destructive Evaluation (CINDE).

Visit the CINDE website to register.