Nondestructive Evaluation of Thick Concrete Using Advanced Signal Processing Techniques

Clayton, Dwight A; Barker, Alan; Santos-Villalobos, Hector; Albright, Austin; Hoegh, Kyle; Khazanovich, Lev

doi:10.2172/1221739

Cited by 12 publications

(11 citation statements)

References 20 publications

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“…8(a-b), respectively. These results matched their respective reconstructions from Clayton et al [6] with the additional benefit of being reproduced inside a controlled environment provided by the application. …”

Section: Signal Processing Interfacesupporting

confidence: 82%

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An HDF5-based framework for the distribution and analysis of ultrasonic concrete data

Prince¹,

Clayton²,

Santos-Villalobos³

2017

AIP Conference Proceedings

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Section: Signal Processing Interfacesupporting

confidence: 82%

“…For instance, Fig. 9(a) corresponds to an organizational architecture view of the thick specimen documented by Clayton et al [6]. Note that the root group node for the thick specimen is labeled with the name of that specimen.…”

Section: Overview On the Hdf5 Data File Formatmentioning

confidence: 99%

An HDF5-based framework for the distribution and analysis of ultrasonic concrete data

Prince¹,

Clayton²,

Santos-Villalobos³

2017

AIP Conference Proceedings

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“…Experimental results have been obtained from a designed thick concrete specimen [33]. The height and width of the specimen is 84 inches, Fig.…”

Section: B Mira Experimental Resultsmentioning

confidence: 99%

“…The type and location of the defects are shown in Fig. 11, 12, 13, and 14 [33]. The specified location of the defects might be different from the real location due to possible displacement while pouring the cement.…”

Section: B Mira Experimental Resultsmentioning

confidence: 99%

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Ultrasonic Model-Based Iterative Reconstruction with Spatially Variant Regularization for One-Sided Non-Destructive Evaluation

Almansouri¹,

Venkatakrishnan²,

Clayton³

et al. 2018

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One-sided ultrasonic non-destructive evaluation (UNDE) is extensively used to characterize structures that need to be inspected and maintained from defects and flaws that could affect the performance of power plants, such as nuclear power plants. Most UNDE systems send acoustic pulses into the structure of interest, measure the received waveform and use an algorithm to reconstruct the quantity of interest. The most widely used algorithm in UNDE systems is the synthetic aperture focusing technique (SAFT) because it produces acceptable results in real time. A few regularized inversion techniques with linear models have been proposed which can improve on SAFT, but they tend to make simplifying assumptions that do not address how to obtain reconstructions from large real data sets. In this paper, we propose a model-based iterative reconstruction (MBIR) algorithm designed for scanning UNDE systems. To further reduce some of the artifacts in the results, we enhance the forward model to account for the transmitted beam profile, the occurrence of direct arrival signals, and the correlation between scans from adjacent regions. Next, we combine the forward model with a spatially variant prior model to account for the attenuation of deeper regions. We also present an algorithm to jointly reconstruct measurements from large data sets. Finally, using simulated and extensive experimental data, we show MBIR results and demonstrate how we can improve over SAFT as well as existing regularized inversion techniques. 1

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Internal Pressure Monitoring in a Post-tensioned Containment Building Using Operational Vibration

et al. 2020

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Nondestructive Evaluation of Thick Concrete Using Advanced Signal Processing Techniques

Cited by 12 publications

References 20 publications

An HDF5-based framework for the distribution and analysis of ultrasonic concrete data

An HDF5-based framework for the distribution and analysis of ultrasonic concrete data

Ultrasonic Model-Based Iterative Reconstruction with Spatially Variant Regularization for One-Sided Non-Destructive Evaluation

Internal Pressure Monitoring in a Post-tensioned Containment Building Using Operational Vibration

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