SCANMASTER UT/X

PHASED ARRAY SPOT WELD INSPECTOR

The ScanMaster spot weld inspection systems – UT/X, UT/MATE and UT/PRO – use algorithms proven over decades to evaluate ultrasonic signals generated during the inspection of resistance-welded spot joints. In contrast to destructive testing methods (tear tests, hammer and chisel) the test parts remain intact. In addition to the avoidance of scrap, ultrasonic testing offers the advantage that considerably more points can be inspected in much shorter periods of time. Automatic evaluation and archiving as well as statistical evaluations allow a quick feedback on the welding process.

The UT/X represents a consistent further development of the conventional systems UT/MATE and UT/PRO. Based on the phased array technique, measured parameters such as lens diameter and welded area can be included in the result in addition to the previous evaluation methods. The system also provides a visual impression of the welding lens.

The inspection of spot welds with the ScanMaster UT/X, which is based on phased array technology, enables direct measurement of the diameter of the weld lens, the welded area and the residual wall thickness of the lens. In addition, statistical evaluation algorithms of the individual A-scans of all elements are used.

The arrangement of the elements in a matrix allows for a complete inspection of weld spots up to a diameter of 9 mm with a single probe. If necessary, conventional probes can also be included in an inspection plan if the PA probe is too large due to the component geometry. In this case, the conventional evaluation algorithms are used again.

The PA probe can be used both with a flexible water delay path and with a fixed rigid delay path, and can thus be adapted to the weld spot geometry.