Overview

Ultrasonic inspection can be used to detect surface flaws, such as cracks, seams, and internal flaws such as voids or inclusions of foreign material. It’s also used to measure wall thickness in tubes and diameters of bars.
An ultrasonic wave is a mechanical vibration or pressure wave similar to audible sound, but with a much higher vibration frequency. For NDT purposes, the range is usually from 1MHz to 30MHz.
Depending on the test requirements, these waves can be highly directional and focused on a small spot or thin line, or limited to a very short duration.

MAC Solutions:

MAC’s ultrasonic NDT testing methods will indicate material defects such as longitudinal and transverse cracks, inclusions and other flaws, as well as ID/OD dimensions and dimensional changes such as thickness and ovality.
The Echomac^® Rotary Transducer Assembly provides multiple test configurations for tube or bar up to 500mm in diameter. Available for shear-wave configuration (surface and subsurface defects) and compression-wave configuration (internal defects and dimensions measurements such as wall thickness).
MAC now has cost-effective TacTic™ “spin the tube” immersion tank ultrasonic systems which can be used to test tube up to 8” and bar up to 6” diameter, where high through-put speed is not a requirement. The systems locate internal and external defects and inconsistencies in the wall thickness of tubular products.
The Echomac^® FD6 Multi Channel Ultrasonic Tester is a computer-based UT inspection instrument designed for on- or off-line flaw detection, thickness and dimensional measurement.

Phased array ultrasonics uses multiple transducer elements, which can be pulsed independently, combined in one probe to create an electronically steered and focused beam that can be customized for a specific application. By varying the timing of the individual transducers, it allows precise control of the beam angle and focal distance to achieve superior results in testing.
The phased array probe does not need to be physically moved because the angle and focus can be changed electronically with no physical change of the probe to adjust for different test product sizes and characteristics.

These systems are especially well suited for metal manufacturers who produce small batches of material or require frequent diameter size changes.
Designed for specialized immersion tank “spin the tube” benches and mechanics.
Cost-effective for lower through-put speed applications, including laboratories.

MAC Solutions:

As the use of nodular graphite iron material has expanded in recent years for automotive safety parts, ultrasonic velocity measurement provides an industry accepted means of verifying the material integrity of the part. The Echomac^® VM measures velocity to assess nodularity in ductile iron cast automotive components. It operates with either full immersion or bubbler couplant technology and can test two parts simultaneously in separate test situations.
The Echomac^® Phased Array Test System offers high-speed parallel processing to handle a large amount of data and is designed for situations where phased array ultrasonic technology is preferred to conventional ultrasonics.
The Echomac^® PA BT Bar Tester includes a unique water box design which minimizes water loss and bubbles while ensuring that bars are properly centered relative to the transducers.
The Echomac^® PA TW Weld Zone Tester provides electronic scanning to detect defects in tube and pipe caused by scarfing or welding processes in the entire weld zone area.