ADVANCED ULTRASONIC TESTING (AUT)
Our Phased array Corrosion Mapping & TOFD services can successfully overcome many of the inconsistencies and challenges of the manual application.
A phased array probe is constructed from a number of very small elements arranged in a line or in a specific cluster design. By activating a number of the elements at once and applying specific voltages to each element a predetermined beam angle, or beam of varying angles can be produced
Furthermore, by moving the active elements along the probe the beam is moved forward/backward in a manner similar to the movement of a manual technique.
TOFD (Time of Flight Diffraction) technique is a computerized and automated system for weld inspection which is able to scan, store, and evaluate indications in terms of height, length, and position with a grade of accuracy never achieved by other ultrasonic techniques. TOFD has two blind zones where it is not sensitive to defects; hence TOFD needs to be supplemented by a conventional pulse-echo examination of the near and far walls.
When the phased array wedge is placed on the parent material at a specific stand-off position and moved along the weld, data can be collected and imaged as a C-scan (plan view) of the weld, much like a traditional radiograph. To compliment this, the ultrasonic imaging system can also show the A-scan, a B-scan (end view), a D-scan (side view) and in the case of a beam with varying angles an S-scan (or sectorial scan).
Our advanced NDT equipment for Phased Array Corrosion Mapping & Flaw Detection include but are not limited to;
Silverwing’s Rapid Motion Scanning (RMS) Technology Silverwing’s Swift Data Acquisition System & Scorpion 2 Crawler GE Mentor UT Olympus Omniscan MX2 & SX Sonatest Flaw Detectors GE USM 36 Flaw Detectors