Automated defect detection of corrosion or cracks using saft processed lamb wave images
First Claim
1. An automated method for detecting corrosion or crack defects, comprising:
- obtaining a first of a plurality of ultrasound images acquired with guided Lamb waves;
processing the first image using a synthetic aperture focusing technique (SAFT) to enhance a resolution and a signal to noise ratio of a first extracted ultrasonic image;
applying a systemic background noise suppression algorithm to the first extracted ultrasonic image to render a second extracted ultrasonic image having reduced noise; and
applying a deconvolution linear filtering process to the second extracted ultrasonic image to render a third extracted ultrasonic image.
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Abstract
A system, method and computer program product is provided for automated defect detection of corrosion or cracks using synthetic aperture focusing technique (SAFT) processed Lamb wave images. The method comprises processing the first image using a synthetic aperture focusing technique (SAFT) to enhance a resolution and a signal to noise ratio of a first extracted ultrasonic image, applying a systemic background noise suppression algorithm to the first extracted ultrasonic image to render a second extracted ultrasonic image having reduced noise, and applying a deconvolution linear filtering process to the second extracted ultrasonic image to render a third extracted ultrasonic image.
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Citations
26 Claims
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1. An automated method for detecting corrosion or crack defects, comprising:
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obtaining a first of a plurality of ultrasound images acquired with guided Lamb waves; processing the first image using a synthetic aperture focusing technique (SAFT) to enhance a resolution and a signal to noise ratio of a first extracted ultrasonic image; applying a systemic background noise suppression algorithm to the first extracted ultrasonic image to render a second extracted ultrasonic image having reduced noise; and applying a deconvolution linear filtering process to the second extracted ultrasonic image to render a third extracted ultrasonic image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An automated defect detection system, comprising:
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a transducer configured for obtaining a first of a plurality of ultrasound images acquired with guided Lamb waves; and a controller coupled to the transducer configured to processes the first image using a synthetic aperture focusing technique (SAFT) to render a first extracted ultrasonic image, apply a systemic background noise suppression algorithm to the first extracted ultrasonic image to render a second extracted ultrasonic image, and apply a deconvolution linear filtering process to the second extracted ultrasonic image to render a third extracted ultrasonic image. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A computer program product for performing automated defect detection, the computer program product comprising a computer-readable storage medium having computer-readable program code portions stored therein, the computer-readable program code portions comprising:
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a first executable portion for obtaining a first of a plurality of ultrasound images acquired with guided Lamb waves; a second executable portion for processing the first image using a synthetic aperture focusing technique (SAFT) to render a first extracted ultrasonic image; a third executable portion for applying a systemic background noise suppression algorithm to the first extracted ultrasonic image to render a second extracted ultrasonic image; and a fourth executable portion for applying a deconvolution linear filtering process to the second extracted ultrasonic image to render a third extracted ultrasonic image. - View Dependent Claims (26)
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Specification