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Defect Monitoring of CFRP with Ultrasonic C-Scan Method
Advanced Materials Research, 2011In this study, carbon fiber reinforced polymer (CFRP) laminates that were under three-point bending load within and without initial impact damage, were detected and monitored by ultrasonic C-scan method. The defect morphology at various load levels was recorded.
Peng Li +5 more
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"Synthetic axial acquisition" full resolution C-Scan ultrasonic imaging
IEEE Ultrasonics Symposium, 2005., 2006This work relates to efficient and low cost acquisition of beamformer data for C-Scan imaging. In our previously described Directly Sampled In-phase and Quadrature (DSIQ) approach (1), as few as one complex sample per array element is used. In the 'Synthetic Axial Acquisition' (SAA) approach presented here, we take advantage of the fact that we use an ...
Y. Li +3 more
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Acoustic lens characterization for ultrasound and photoacoustic C-scan imaging modalities
2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008From a fundamental perspective, image reconstruction tasks in both ultrasound pulse echo and photoacoustic imaging are identical. We propose a C-scan imaging scheme that is applicable to both modalities where the image reconstruction is achieved through focusing action of an acoustic lens.
Navalgund A, Rao +5 more
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Multiple-frequency C-scan bond testing for composite structures
AIP Conference Proceedings, 2012Adhesive-bonded components and structures have become an important part of manufacturing in the aerospace industry. These components often rely on honeycomb composite structures for strong yet lightweight design. However, the quality of the bonds is very important to the overall integrity of the composite structures. Due to their wide range of laminate
J. Habermehl, B. Lepage
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Optic Nerve Measurements by 3D Ultrasound-Based Coronal "C-scan" Imaging
Ophthalmic Surgery, Lasers and Imaging Retina, 2005Abstract. Twenty-three normal eyes were examined with the Intensity Profiling technique of 3D I-Scan and 52 normal eyes with the Automated technique of OTI-Scan 1000 ultrasound systems (Ophthalmic Technologies Inc., Toronto, Ontario, Canada). With the eye looking straight, the probe was applied on the temporal sclera. Scanning generated 3D image files.
Julian P S, Garcia +3 more
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C-scan imaging by radiation force stimulated acoustic emission method
1996 IEEE Ultrasonics Symposium. Proceedings, 2002A novel C-scan imaging method is presented. This method utilizes the radiation force to stimulate an acoustic emission by the object at low frequencies. The radiation force, which is highly localized, is produced employing two intersecting focused ultrasound beams driven by two CW sources at slightly different frequencies.
M. Fatemi, J.F. Greenleaf
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Neural network-based ultrasonic C-scan imaging of austenitic structures
The Journal of the Acoustical Society of America, 1999Results of new studies of C-scan imaging on austenitic welds, used in conjunction with artificial neural network techniques, are reported. The C-scan technique provides high-resolution images of subsurface zones which are inaccessible by conventional A-scans.
Petre Petculescu, Dorin Ciobanu
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An efficient hole-filling algorithm for C-scan enhancement
AIP Conference Proceedings, 2002In this paper, a simple interpolation technique is presented that can approximate the broken edges of an image by polynomial approximation of the vicinities of the open ends. A preprocessing step of ‘specifying’ the abscissa for the binary image pixels. This corresponds to re re-arranging the co-existing pixels with a small and monic displacement. This
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B-Scan and C-Scan Imaging in the Orbit
1978Many authors (Coleman et al., 1972; Ossoinig & Till, 1975) have reported the use of A-scan and B-scan techniques in orbital diagnosis.
Marie Restori +2 more
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Ultrasonic C-Scan Standardization for Polymer-Matrix Composites - Acoustic Considerations
1998Ultrasonic C-scan inspection techniques are widely used for the non-destructive evaluation of fiber-reinforced polymer composites. A C-scan is any two-dimensional scan of a specimen that produces a map of a parameter, such as reflected amplitude, as it varies across the surface of the specimen.
Smith, Robert A +5 more
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