ULTRASONIC TESTERS TO DETECT SURFACE, SUBSURFACE AND DIMENSIONAL FLAWS
Ultrasonic testing equipment uses high-frequency sound vibrations are transmitted into material by an ultrasonic transducer. The test instrument then analyzes the ultrasonic signals which are received using either a pulse-echo or through-transmission method. In the pulse-echo mode, the transmitting transducer also serves as the ultrasonic receiver and analyzes the reflected signal with respect to amplitude and time.
In the through-transmission mode, the ultrasonic signal is received by a separate transducer which analyzes the amplitude loss of signal. These ultrasonic NDT methods will indicate material defects such as longitudinal and transverse cracks, inclusions and others as well as ID/OD dimensions and dimensional changes such as thickness and ovality.
High speed ultrasonic rotary testers provide multiple test configurations for tube or bar up to 360 millimeters in diameter.
ECHOMAC® Rotary Ultrasonic System Rotating ultrasonic transducers are available for shear-wave configuration (surface and subsurface defects) and compression-wave configuration (internal defects and dimensional measurements such as wall thickness.) Models are available for inspecting material from 10 mm to 360 mm in diameter at test speeds up to 200 fpm, depending on the size and condition of the material. Rotary ultrasonic systems can be combined with eddy-current instrumentation to meet API, ASTM, Mill, and Customer specifications.
- Used with FD-5 electronics for non-destructive testing of bars, tube and Pipe.
PDF File: UT_Rotary.pdf
For Use With: Bars and Rods, Tubing
Multi Channel Ultrasonic Tester
The Echomac FD-5 is a computer based ultrasonic inspection instrument designed for on or off-line flaw detection, thickness and outside diameter measurement. Instead of using common spike pulsers, the FD-5 uses negative square pulsers lower in amplitude and longer in length coupled with a pitch-catch through transmission to fully optimize transducer efficiency. Building on the success and wide acceptance of the Echomac FD-4, the FD-5 achieves a new level of improved signal to noise, repeatability and reliability. Improved 16 steps damping adjustments in increments of 20 Ohms, instead of the common 2 step high or low adjustment, allows the transducer to detect lower signals while giving the user better control over reflections. With a higher gain range and the addition of 5 low pass filters and 5 high pass filters, noise is significantly
suppressed, thus improving reliability and repeatability. Zero cross-talk optimizes signal integrity and provides precise thickness measurement.
The FD-5 electronics uses Echohunter® software operating in a Windows® environment. This software integrates a UT setup parameter panel, multi-channel viewing, tracking and chart recording, all into a single program for ease of use. The flicker free A-scan captures non-repetitive events or flaws of short duration, even in very high speed UT scanning systems, typical of rotating transducer heads. The A-scan display can be digitized to 100 MHz and includes; basic sample mode, persistence mode with adjustable hold time, and a dynamic 3-D mode where the prior signals fade into the background as the displacement of the transducer and reflector changes. Strip charts are presented on the monitor in combination with the A-scan and setup parameters or individually.
- Flaw, thickness or ID diameter detection on or off line, for tube, bar, or plate. Well suited for new or older installations in need of upgrading, the FD-5 instrumentation can be used with MAC’s Echomac Rotary Ultrasonic Transducer assembly as well as with other existing immersion or squirter type “spin the tube” installations.
PDF File: FD-5.pdf
For Use With: Bars and Rods, Plate and Strip, Tubing