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On the ultrasonic characterization of the stacking sequence of CFRP laminates

Xiaoyu Yang (UGent) and Mathias Kersemans (UGent)
(2023) NDT & E INTERNATIONAL. 138.
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Abstract
Ultrasound in pulse-echo scan mode has already been demonstrated for the extraction of local fiber angle dis-tribution in composite laminates. Depending on the ultrasonic (scan) parameters employed, different sensitivity, spatial resolution, and dynamic depth range can be reached. This study investigates the use of pulse-echo ultrasound testing in different frequency ranges to characterize the in-plane fiber angle distribution and ply stacking sequence in a multi-layer composite laminate. Minimization of the Mumford-Shah functional is performed as an edge-preserving smoothing procedure for the recorded ul-trasonic dataset, followed by the application of a Gabor Filter-based Information Diagram approach to extract a 3D tomographic image of the fiber angles. The performance of the method is experimentally studied on ultra-sonic datasets, recorded at various center frequencies, of a 5.5 mm thick 24-layer quasi-isotropic carbon fiber reinforced polymer laminate with stacking sequence [+45/0/ -45/90]3s. For quantitative analysis, statistical metrics are employed to evaluate the accuracy and precision of the extracted angles over depth, and to better understand the interfering influence of adjacent plies. For the given case study, a 15 MHz ultrasound frequency is recommended as it provides a good balance between precision, accuracy, and depth range. To understand the influence of scan parameters on the fiber angle characterization, the 15 MHz ultrasonic dataset is analyzed for various noise conditions as well as different spatial step size of the scan.
Keywords
Ultrasound, Fiber angle, Stacking sequence, Carbon fiber reinforced polymer CFRP, Gabor filter-based information diagram, Mumford-Shah smoothing

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Citation

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MLA
Yang, Xiaoyu, and Mathias Kersemans. “On the Ultrasonic Characterization of the Stacking Sequence of CFRP Laminates.” NDT & E INTERNATIONAL, vol. 138, 2023, doi:10.1016/j.ndteint.2023.102897.
APA
Yang, X., & Kersemans, M. (2023). On the ultrasonic characterization of the stacking sequence of CFRP laminates. NDT & E INTERNATIONAL, 138. https://doi.org/10.1016/j.ndteint.2023.102897
Chicago author-date
Yang, Xiaoyu, and Mathias Kersemans. 2023. “On the Ultrasonic Characterization of the Stacking Sequence of CFRP Laminates.” NDT & E INTERNATIONAL 138. https://doi.org/10.1016/j.ndteint.2023.102897.
Chicago author-date (all authors)
Yang, Xiaoyu, and Mathias Kersemans. 2023. “On the Ultrasonic Characterization of the Stacking Sequence of CFRP Laminates.” NDT & E INTERNATIONAL 138. doi:10.1016/j.ndteint.2023.102897.
Vancouver
1.
Yang X, Kersemans M. On the ultrasonic characterization of the stacking sequence of CFRP laminates. NDT & E INTERNATIONAL. 2023;138.
IEEE
[1]
X. Yang and M. Kersemans, “On the ultrasonic characterization of the stacking sequence of CFRP laminates,” NDT & E INTERNATIONAL, vol. 138, 2023.
@article{01HGFXXX2P9WVHYE6SJGR21AGS,
  abstract     = {{Ultrasound in pulse-echo scan mode has already been demonstrated for the extraction of local fiber angle dis-tribution in composite laminates. Depending on the ultrasonic (scan) parameters employed, different sensitivity, spatial resolution, and dynamic depth range can be reached. This study investigates the use of pulse-echo ultrasound testing in different frequency ranges to characterize the in-plane fiber angle distribution and ply stacking sequence in a multi-layer composite laminate. Minimization of the Mumford-Shah functional is performed as an edge-preserving smoothing procedure for the recorded ul-trasonic dataset, followed by the application of a Gabor Filter-based Information Diagram approach to extract a 3D tomographic image of the fiber angles. The performance of the method is experimentally studied on ultra-sonic datasets, recorded at various center frequencies, of a 5.5 mm thick 24-layer quasi-isotropic carbon fiber reinforced polymer laminate with stacking sequence [+45/0/ -45/90]3s. For quantitative analysis, statistical metrics are employed to evaluate the accuracy and precision of the extracted angles over depth, and to better understand the interfering influence of adjacent plies. For the given case study, a 15 MHz ultrasound frequency is recommended as it provides a good balance between precision, accuracy, and depth range. To understand the influence of scan parameters on the fiber angle characterization, the 15 MHz ultrasonic dataset is analyzed for various noise conditions as well as different spatial step size of the scan.}},
  articleno    = {{102897}},
  author       = {{Yang, Xiaoyu and Kersemans, Mathias}},
  issn         = {{0963-8695}},
  journal      = {{NDT & E INTERNATIONAL}},
  keywords     = {{Ultrasound,Fiber angle,Stacking sequence,Carbon fiber reinforced polymer CFRP,Gabor filter-based information diagram,Mumford-Shah smoothing}},
  language     = {{eng}},
  pages        = {{8}},
  title        = {{On the ultrasonic characterization of the stacking sequence of CFRP laminates}},
  url          = {{http://doi.org/10.1016/j.ndteint.2023.102897}},
  volume       = {{138}},
  year         = {{2023}},
}
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