Ultrasonic testing (UT) method utilise mechanical vibration within the ultrasonic range (> 20kHz) to detect volumetric discontinuities within solid materials.
Both compression and shear waves are used to investigate the internal nature of components while the interaction of waves with linear, planar or volumetric ‘vacancies’ are used to characterise any discontinuities detected.
The sound beam is the primary inspection medium and both the qualification (properties) and quantification (calibration) thereof is essential for the interpretation of signal response. If you enjoy playing pool and have a knack for geometry and trigonometry, then we invite you to attend an ultrasonic testing course. It will change the way that you look at any engineering material or weldment.
Compression and shear wave applications having various angles and frequencies are building blocks for determining the techniques used.
Also the send-or-receive / send-and-receive capabilities of the sensors are some of the technique parameters together with the scanning methodology used for example the tandem technique.
The training course is based on general theory as well as sector specific applications relating, but not limited to, the following standards and specifications:
- ASME Boiler & Pressure Vessel Code – Section V – Subsection A – Article 1, 4 & 5
- ASME Boiler & Pressure Vessel Code – Section V – Subsection B – Article 23
- ISO 16810 UT – General Principles
- ISO 11666 UT – Acceptance Levels
- ISO 17640 UT – Techniques, Testing levels and assessment
- ISO 23279 UT – Characterisation of discontinuities in welds
- ISO 5577 UT – Vocabulary
- ISO 18175 UT – Performance characteristics (no electronic instruments)
- ISO 16827 UT – Characterisation and sizing of discontinuities
- ISO 16826 UT – Discontinuities perpendicular to the surface
- ISO 16811 UT – Sensitivity and range
- ISO 12710 UT – Evaluating electronic characteristics of UT instruments
- ISO 10375 UT – Characterisation of search unit and sound field
- ISO 7963 UT – Calibration block No 2
- ISO 4992 Parts 1 & 2 UT – Steel castings
- ISO 2400 UT – Calibration block No 1
Details of specific codes utilised in the limited (UT 1.WT) as well as derived or advanced techniques courses (UT 2.7; 2.8; 2.9; 2.10 and 2.11) can be found in the relevant training documents.