Pocket AU

Hand-held Acousto-Ultrasonic Scanning System

The Pocket AU system with rolling sensor probe has been successfully used in the quality inspection of thick composite material and bridge and concrete structure rehabilitation with fiber-reinforced concrete polymer. The system also has many distinctive features that make it ideally used in the field and in applications where other traditional NDT methods are not practical or successful.

The Pocket AU scanner is a computerized Pocket PC operated acousto-ultrasonic (AU) instrument used for the nondestructive inspection of composite materials and other materials/structures that are difficult to inspect with UT and other NDT technologies. The system is based on the acousto-ultrasonic technology that directs acoustic waveform bursts (a few hundred kHz) into the material being inspected. An AU receiver recognizes these waveforms and Pocket AU processes the results and displays them as A-Scan waveforms and C-Scan image maps. Defects can be easily identified from the C-Scan images. The acoustic signal features include gated Amplitude and Time of Flight, as well as Energy and other Acoustic Emission parameters, which change when the acoustic bursts travel through the material and encounter defects and discontinuities, such as cracks, material property changes, delamination and debonding.

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