Ultrasonic Pulse Echo (UPE) Tomography

Ultrasonic Pulse Echo is an advanced imaging technique used to detect defects within concrete structures.
It uses an array of piezoelectric ultrasonic transducers and measures acoustic stress waves.

Applications of Ultrasonic Pulse Echo

When evaluating large concrete structures, such as thick slabs, thick foundations, beams, columns or tunnels, conventional Ground Penetrating Radar (GPR) can be limited by depth and embedded reinforcement. UPE can reach greater depths than GPR, and is much less affected by metal, but considerably more affected by air or voids.

As a result, UPE can be used to map out honeycombing, voids, large cracks and/or to determine the thickness of reinforced concrete structures up to 2.5m(8ft) depth. Additionally, another advantage lies in its ability to image a structure from a single side in contrast to the more traditional ultrasonic pulse velocity (UPE).

The Equipment

Xradar™ uses the latest technologies for non-destructive inspections, including the MIRA shear wave tomograph by ACSYS and the Proceq PD8000.

MIRA's advanced instrument has an array of 48 transducers with dry-contact ceramic tips and uses a complex SAFT signal processing to provide a high-resolution image of the internal concrete structure. The tomograph sends a short pulse through the concrete, then records shear wave reflections in all transducers simultaneously, producing an image or scan of the reflected waves. Our technicians analyse these images to identify features and/or defects.

Proceq Pundit's wireless inspection solution with multi-channel ultrasonic pulse echo technology, consolidates power in a single device for structural imaging, object and defect detection with ultrasound pulse echo providing real-time imaging, weight optimization and AI assistance.  It's features has superior image clarity with control of all transmission parameters and large scale 2D, 3D, heatmap and AR visualization modes.

For large areas and structures the ELOP Insight rolling UPE  can be utilised for efficient data collection.


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