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Updated: Feb 16, 2026

Ultrasonic Fatigue Testing in the Tension-Compression Mode
Published on: March 7, 2018
Detection of rebars in concrete using advanced ultrasonic pulse compression techniques
S Laureti1, M Ricci2, M N I B Mohamed3
1Dipartimento di Ingegneria, Università degli Studi di Perugia, Polo Scientifico Didattico di Terni, 05100 Terni, Italy.
Abstract:
A pulse compression technique has been developed for the non-destructive testing of concrete samples. Scattering of signals from aggregate has historically been a problem in such measurements. Here, it is shown that a combination of piezocomposite transducers, pulse compression and post processing can lead to good images of a reinforcement bar at a cover depth of 55 mm. This has been achieved using a combination of wide bandwidth operation over the 150-450 kHz range, and processing based on measuring the cumulative energy scattered back to the receiver. Results are presented in the form of images of a 20 mm rebar embedded within a sample containing 10 mm aggregate.
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