Ultrasonic waves generated by smart aggregates for concealed crack detection in asphalt mixture

Tang, Ning; Guo, Shenghao; Yang, Ye; Sun, Wei

doi:10.1016/j.conbuildmat.2024.137183

Construction and Building Materials

2024

DOI: 10.1016/j.conbuildmat.2024.137183

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Ultrasonic waves generated by smart aggregates for concealed crack detection in asphalt mixture

Ning Tang,

Shenghao Guo,

Ye Yang

et al.

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Experimental Investigation of Concrete Crack Depth Detection Using a Novel Piezoelectric Transducer and Improved AIC Algorithm

Li,

Zhu,

et al. 2024

Buildings

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Ultrasonic pulse velocity (UPV) has shown effectiveness in determining the depth of surface-open cracks in concrete structures. The type of transducer and the algorithm for extracting the arrival time of the ultrasonic signal significantly impact the accuracy of crack depth detection. To reduce the energy loss in piezoceramic-based sensors, a high-performance piezoceramic-enabled smart aggregate (SA) was employed as the ultrasonic transducer. For the extraction of ultrasonic signal arrival time in concrete, a novel characteristic equation was proposed, utilizing the slope of the signal within a shifting window. This equation was subsequently applied to modify Maeda’s function, with the arrival time of ultrasonic waves defined as the moment corresponding to the minimum Akaike information criterion (AIC) value. Six plain concrete specimens with artificial cracks were prepared and one reinforced concrete beam with a load-induced crack was used for validation. The average deviation of the testing of 492 points on 12 human-made cracks was around 5%. The detection results of 11 measurement points of a crack in a reinforced concrete beam show that three measurement points have a deviation of about 17%. The experimental results demonstrated that the novel piezoelectric transducer and improved AIC algorithm exhibit high accuracy in detecting the depth of concrete cracks.

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Experimental Investigation of Concrete Crack Depth Detection Using a Novel Piezoelectric Transducer and Improved AIC Algorithm

Li,

Zhu,

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

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Ultrasonic waves generated by smart aggregates for concealed crack detection in asphalt mixture

Cited by 1 publication

References 40 publications

Experimental Investigation of Concrete Crack Depth Detection Using a Novel Piezoelectric Transducer and Improved AIC Algorithm

Experimental Investigation of Concrete Crack Depth Detection Using a Novel Piezoelectric Transducer and Improved AIC Algorithm

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