Basics 3 min read
Automated Eddy Current Testing for Aero-engine Components
Advanced 3D Scanning Solution for Aero-engine Components Aero-engine disc components such as; bearing rings, fan and compressor discs are typically…
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Basics 5 min read
Terahertz Imaging
Recently, electromagnetic radiation in the terahertz frequency range, best known as Terahertz radiation (hereafter abbreviated as THz), has emerged as…
Basics 6 min read
Influence of Metal Microstructures
The internal structure of a component will influence how sound propagates through it. Most metal specimens are comprised of small…
Basics 7 min read
Grain Noise
If you are involved in the UT inspection of metals, and backscattered grain noise is making it difficult to reliably…
Basics 8 min read
Time of Flight Diffraction Technique (TOFD)
Abstract The article begins with an introduction of TOFD technique principles. The main part reviews some recent literature wherein excellent…
Basics 7 min read
NDT – Phased Array Ultrasonic testing (PAUT)
LMATS’s PAUT experts have been involved in various research and development programs and have been pioneers in some of the…
Basics 3 min read
A-Scans and C-Scans
The ultrasonic inspection of metals for internal defects is similar in many respects to searching for fish using an ultrasonic…
Basics 5 min read
Data Presentation
Ultrasonic data can be collected and displayed in a number of different formats. The three most common formats are know…
Basics 5 min read
Angle Beam Probe Selection
Angle Beam Probe Selection The various types of ultrasonic transducers used in flaw detection applications were discussed in Section 4.1. In construction…
Basics 4 min read
Straight Beam Tests
Straight beam testing is generally employed to find cracks or delaminations parallel to the surface of a test piece, as…
Basics 2 min read
Ultrasonic Examination – Time of Flight Diffraction (TOFD)
Time of flight diffraction is one of the most advanced techniques of ultrasound examination. The method is based on the…
Basics 2 min read
Ultrasonic Testing – Pulse-Echo Method
The method is based on mechanical waves (ultrasound) generated by a piezo-magnetically excited element at a frequency typically in the…
