Course Content

  Basic principles of sound; generation and detection of sound; behaviour of sound in a material; the flaw detector; use of angled beam probes for weld scanning; welding processes and weld defects; practical exercises on test specimens containing simulated flaws; examination of parent plate, butt welds; instruction writing. The course ends with the examination and certification from TWI. Training in accordance with the requirements of ISO 9712.  


  • To explain the theoretical background of the techniques
  • To calibrate ultrasonic equipment
  • To measure the thickness of steel plates and determine levels of attenuation
  • To locate and evaluate laminations
  • To select the correct type of probe to examine welded butt joints in steel plate and aerospace components/structures
  • To report on the location and size of defects in typical welded butt joints
  • To interpret code requirements
  • To meet the syllabus requirements for PCN/CSWIP Levels 1 and 2.

Course Module

  1. Introduction
  2. Physical Principles
  3. Modes of Sound Energy
  4. Generating Ultrasound
  5. Pulse Length and Damping
  6. The Sound Beam
  7. Total Attenuation Loss
  8. Acoustic Impedance
  9. Snell’s Law
  10. Probe Design

Course Duration

1 Month