COMPARISON OF ULTRASONIC ARRAY IMAGING ALGORITHMS FOR NON-DESTRUCTIVE EVALUATION

J. Zhang; B. W. Drinkwater; P. D. Wilcox

doi:10.1063/1.4789130

COMPARISON OF ULTRASONIC ARRAY IMAGING ALGORITHMS FOR NON-DESTRUCTIVE EVALUATION

J. Zhang^*, B. W. Drinkwater, P. D. Wilcox

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

3 Citations (Scopus)

Abstract

Ultrasonic array imaging algorithms have been widely used and developed in nondestructive evaluation in the last 10 years. In this paper, three imaging algorithms (Total Focusing Method (TFM), Phase Coherent Imaging (PCI), and Spatial Compounding Imaging (SCI)) are compared through both simulation and experimental measurements. In the simulation, array data sets were generated using a hybrid forward model containing a single defect amongst a multitude of randomly distributed point scatterers to represent backscatter from material microstructure. The Signal to Noise Ratio (SNR) of the final images and their resolution were used to indicate the quality of the different imaging algorithms. The images of different types of defect (point reflectors and planar cracks) were used to investigate the robustness of the imaging algorithms. It is shown that PCI can yield higher image resolution than the TFM, but that the images of cracks are distorted. Overall, the TFM is the most robust algorithm across a range of different types of defects. It is also shown that the detection limit of all three imaging algorithms is almost equal for weakly scattering defects.

Original language	English
Title of host publication	REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 32A AND 32B
Editors	DO Thompson, DE Chimenti
Place of Publication	MELVILLE
Publisher	American Institute of Physics (AIP)
Pages	825-832
Number of pages	8
ISBN (Print)	978-0-7354-1129-6
DOIs	https://doi.org/10.1063/1.4789130
Publication status	Published - 2013
Event	39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2012) - Denver, CO, United States Duration: 15 Jul 2012 → 20 Jul 2012 Conference number: 39

Publication series

Name	AIP Conference Proceedings
Publisher	AMER INST PHYSICS
Volume	1511
ISSN (Print)	0094-243X

Conference

Conference	39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2012)
Abbreviated title	QNDE 2012
Country/Territory	United States
City	Denver, CO
Period	15/07/12 → 20/07/12

Keywords

Ultrasonic Arrays
Total Focusing Method
Phase Coherent Imaging
Spatial Compounding Imaging
SCATTERING
MATRIX

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Zhang, J., Drinkwater, B. W., & Wilcox, P. D. (2013). COMPARISON OF ULTRASONIC ARRAY IMAGING ALGORITHMS FOR NON-DESTRUCTIVE EVALUATION. In DO. Thompson, & DE. Chimenti (Eds.), REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 32A AND 32B (pp. 825-832). (AIP Conference Proceedings; Vol. 1511). American Institute of Physics (AIP). https://doi.org/10.1063/1.4789130

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title = "COMPARISON OF ULTRASONIC ARRAY IMAGING ALGORITHMS FOR NON-DESTRUCTIVE EVALUATION",

abstract = "Ultrasonic array imaging algorithms have been widely used and developed in nondestructive evaluation in the last 10 years. In this paper, three imaging algorithms (Total Focusing Method (TFM), Phase Coherent Imaging (PCI), and Spatial Compounding Imaging (SCI)) are compared through both simulation and experimental measurements. In the simulation, array data sets were generated using a hybrid forward model containing a single defect amongst a multitude of randomly distributed point scatterers to represent backscatter from material microstructure. The Signal to Noise Ratio (SNR) of the final images and their resolution were used to indicate the quality of the different imaging algorithms. The images of different types of defect (point reflectors and planar cracks) were used to investigate the robustness of the imaging algorithms. It is shown that PCI can yield higher image resolution than the TFM, but that the images of cracks are distorted. Overall, the TFM is the most robust algorithm across a range of different types of defects. It is also shown that the detection limit of all three imaging algorithms is almost equal for weakly scattering defects.",

keywords = "Ultrasonic Arrays, Total Focusing Method, Phase Coherent Imaging, Spatial Compounding Imaging, SCATTERING, MATRIX",

author = "J. Zhang and Drinkwater, {B. W.} and Wilcox, {P. D.}",

year = "2013",

doi = "10.1063/1.4789130",

language = "English",

isbn = "978-0-7354-1129-6",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics (AIP)",

pages = "825--832",

editor = "DO Thompson and DE Chimenti",

booktitle = "REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 32A AND 32B",

address = "United States",

note = "39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2012), QNDE 2012 ; Conference date: 15-07-2012 Through 20-07-2012",

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Zhang, J , Drinkwater, BW & Wilcox, PD 2013, COMPARISON OF ULTRASONIC ARRAY IMAGING ALGORITHMS FOR NON-DESTRUCTIVE EVALUATION. in DO Thompson & DE Chimenti (eds), REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 32A AND 32B. AIP Conference Proceedings, vol. 1511, American Institute of Physics (AIP), MELVILLE, pp. 825-832, 39th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2012), Denver, CO, United States, 15/07/12. https://doi.org/10.1063/1.4789130

COMPARISON OF ULTRASONIC ARRAY IMAGING ALGORITHMS FOR NON-DESTRUCTIVE EVALUATION. / Zhang, J.; Drinkwater, B. W.; Wilcox, P. D.
REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 32A AND 32B. ed. / DO Thompson; DE Chimenti. MELVILLE: American Institute of Physics (AIP), 2013. p. 825-832 (AIP Conference Proceedings; Vol. 1511).

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

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N2 - Ultrasonic array imaging algorithms have been widely used and developed in nondestructive evaluation in the last 10 years. In this paper, three imaging algorithms (Total Focusing Method (TFM), Phase Coherent Imaging (PCI), and Spatial Compounding Imaging (SCI)) are compared through both simulation and experimental measurements. In the simulation, array data sets were generated using a hybrid forward model containing a single defect amongst a multitude of randomly distributed point scatterers to represent backscatter from material microstructure. The Signal to Noise Ratio (SNR) of the final images and their resolution were used to indicate the quality of the different imaging algorithms. The images of different types of defect (point reflectors and planar cracks) were used to investigate the robustness of the imaging algorithms. It is shown that PCI can yield higher image resolution than the TFM, but that the images of cracks are distorted. Overall, the TFM is the most robust algorithm across a range of different types of defects. It is also shown that the detection limit of all three imaging algorithms is almost equal for weakly scattering defects.

AB - Ultrasonic array imaging algorithms have been widely used and developed in nondestructive evaluation in the last 10 years. In this paper, three imaging algorithms (Total Focusing Method (TFM), Phase Coherent Imaging (PCI), and Spatial Compounding Imaging (SCI)) are compared through both simulation and experimental measurements. In the simulation, array data sets were generated using a hybrid forward model containing a single defect amongst a multitude of randomly distributed point scatterers to represent backscatter from material microstructure. The Signal to Noise Ratio (SNR) of the final images and their resolution were used to indicate the quality of the different imaging algorithms. The images of different types of defect (point reflectors and planar cracks) were used to investigate the robustness of the imaging algorithms. It is shown that PCI can yield higher image resolution than the TFM, but that the images of cracks are distorted. Overall, the TFM is the most robust algorithm across a range of different types of defects. It is also shown that the detection limit of all three imaging algorithms is almost equal for weakly scattering defects.

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KW - Phase Coherent Imaging

KW - Spatial Compounding Imaging

KW - SCATTERING

KW - MATRIX

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M3 - Conference Contribution (Conference Proceeding)

SN - 978-0-7354-1129-6

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A2 - Chimenti, DE

PB - American Institute of Physics (AIP)

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Y2 - 15 July 2012 through 20 July 2012

ER -

COMPARISON OF ULTRASONIC ARRAY IMAGING ALGORITHMS FOR NON-DESTRUCTIVE EVALUATION

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Keywords

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