2010
DOI: 10.1063/1.3362292
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An Intelligent Stand-Alone Ultrasonic Device for Monitoring Local Damage Growth in Civil Structures

Abstract: ABSTRACT. For aged, in-service civil structures, continuous structural health monitoring is vital to avoid catastrophic failure. This includes monitoring local damage growth at points crucial to the structure's stability. While traditional ultrasonic devices are well-established for scheduled local human inspections, they are ineligible for continuous monitoring. The objective of this research is to develop a stand-alone, self-contained, compact ultrasonic device for continuous structural health monitoring of … Show more

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Cited by 2 publications
(3 citation statements)
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“…Different types of ultrasonic waves, such as bulk wave, Rayleigh wave, and Lamb wave (Aindow et al, 1981), can be used for SHM. One advantage of Rayleigh wave is that it suffers less from geometric attenuation than other bulk waves (Pertsch, 2009) due to its two-dimensional propagation nature. Moreover, Rayleigh wave is non-dispersive unlike Lamb waves, and thus, waveforms from an experiment are relatively simple and easy to analyze (Staszewski, 2004).…”
Section: Validation Of Wireless Ultrasonic Sensing Node On a Notch Spmentioning
confidence: 99%
See 1 more Smart Citation
“…Different types of ultrasonic waves, such as bulk wave, Rayleigh wave, and Lamb wave (Aindow et al, 1981), can be used for SHM. One advantage of Rayleigh wave is that it suffers less from geometric attenuation than other bulk waves (Pertsch, 2009) due to its two-dimensional propagation nature. Moreover, Rayleigh wave is non-dispersive unlike Lamb waves, and thus, waveforms from an experiment are relatively simple and easy to analyze (Staszewski, 2004).…”
Section: Validation Of Wireless Ultrasonic Sensing Node On a Notch Spmentioning
confidence: 99%
“…Different types of ultrasonic waves can be used for SHM, such as Rayleigh wave, longitudinal wave, and shear wave (Aindow et al, 1981). Main advantages of the Rayleigh wave include the following: (1) the wave propagation suffers less from geometric attenuation than three-dimensional waves (Pertsch, 2009), (2) Rayleigh wave is non-dispersive (Viktorov, 1967), and (3) Rayleigh wave is naturally sensitive to surface or near-surface defects or material degradation. For these reasons, Rayleigh wave is best suited for measuring the surface crack depth with a low-power ultrasonic SHM device (such as the one described in this article).…”
Section: Introductionmentioning
confidence: 99%
“…In contrast, the wireless ultrasonic device developed in this study is built around a sophisticated digital signal processor (DSP). The general concept for the prototype device is introduced by Pertsch et al (2009).…”
Section: Introductionmentioning
confidence: 99%