Advanced search
1 file | 403.25 KB Add to list

Local stiffness identification of beams using shearography and inverse methods

Author
Organization
Abstract
Shearography is an interferometric method that produces full-field displacement gradients of the inspected surface. In high-technology industry it is often used qualitatively to detect material defects, but quantitative applications are still rare. The reasons for that are the complicated calibration procedure as well as the denoising, unwrapping, the local sensitivity vector estimation and the local shearing angle estimation needed to get quantitative gradient-maps. To validate the technique and its calibration, results obtained from shearography are compared to results obtained from scanning laser vibrometry. Beams are acoustically excited to vibrate at their first resonant frequency and the mode shape is recorded using both shearography and scanning laser vibrometry. Outputs are compared and their properties discussed. Separate inverse method algorithms are developed to process the data for each method. They use the recorded mode shape information to identify the beam’s local stiffness distribution. The beam’s stiffness is also estimated analytically from the local geometry. The local stiffness distributions computed using these methods are compared and the results discussed.

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 403.25 KB

Citation

Please use this url to cite or link to this publication:

MLA
Zastavnik, Filip, et al. “Local Stiffness Identification of Beams Using Shearography and Inverse Methods.” Advancement of Optical Methods in Experimental Mechanics, Volume 3, edited by Helena Jin et al., vol. 3, Springer, 2014, pp. 275–81, doi:10.1007/978-3-319-00768-7_35.
APA
Zastavnik, F., Pyl, L., Sol, H., Kersemans, M., & Van Paepegem, W. (2014). Local stiffness identification of beams using shearography and inverse methods. In H. Jin, C. Sciammarella, S. Yoshida, & L. Lamberti (Eds.), Advancement of Optical Methods in Experimental Mechanics, Volume 3 (Vol. 3, pp. 275–281). Illinois, USA: Springer. https://doi.org/10.1007/978-3-319-00768-7_35
Chicago author-date
Zastavnik, Filip, Lincy Pyl, Hugo Sol, Mathias Kersemans, and Wim Van Paepegem. 2014. “Local Stiffness Identification of Beams Using Shearography and Inverse Methods.” In Advancement of Optical Methods in Experimental Mechanics, Volume 3, edited by Helena Jin, Cesar Sciammarella, Sanichiro Yoshida, and Luciano Lamberti, 3:275–81. Springer. https://doi.org/10.1007/978-3-319-00768-7_35.
Chicago author-date (all authors)
Zastavnik, Filip, Lincy Pyl, Hugo Sol, Mathias Kersemans, and Wim Van Paepegem. 2014. “Local Stiffness Identification of Beams Using Shearography and Inverse Methods.” In Advancement of Optical Methods in Experimental Mechanics, Volume 3, ed by. Helena Jin, Cesar Sciammarella, Sanichiro Yoshida, and Luciano Lamberti, 3:275–281. Springer. doi:10.1007/978-3-319-00768-7_35.
Vancouver
1.
Zastavnik F, Pyl L, Sol H, Kersemans M, Van Paepegem W. Local stiffness identification of beams using shearography and inverse methods. In: Jin H, Sciammarella C, Yoshida S, Lamberti L, editors. Advancement of Optical Methods in Experimental Mechanics, Volume 3. Springer; 2014. p. 275–81.
IEEE
[1]
F. Zastavnik, L. Pyl, H. Sol, M. Kersemans, and W. Van Paepegem, “Local stiffness identification of beams using shearography and inverse methods,” in Advancement of Optical Methods in Experimental Mechanics, Volume 3, Illinois, USA, 2014, vol. 3, pp. 275–281.
@inproceedings{4210452,
  abstract     = {{Shearography is an interferometric method that produces full-field displacement gradients of the inspected surface. In high-technology industry it is often used qualitatively to detect material defects, but quantitative applications are still rare. The reasons for that are the complicated calibration procedure as well as the denoising, unwrapping, the local sensitivity vector estimation and the local shearing angle estimation needed to get quantitative gradient-maps. To validate the technique and its calibration, results obtained from shearography are compared to results obtained from scanning laser vibrometry. Beams are acoustically excited to vibrate at their first resonant frequency and the mode shape is recorded using both shearography and scanning laser vibrometry. Outputs are compared and their properties discussed. Separate inverse method algorithms are developed to process the data for each method. They use the recorded mode shape information to identify the beam’s local stiffness distribution. The beam’s stiffness is also estimated analytically from the local geometry. The local stiffness distributions computed using these methods are compared and the results discussed.}},
  author       = {{Zastavnik, Filip and Pyl, Lincy and Sol, Hugo and Kersemans, Mathias and Van Paepegem, Wim}},
  booktitle    = {{Advancement of Optical Methods in Experimental Mechanics, Volume 3}},
  editor       = {{Jin, Helena and Sciammarella, Cesar and Yoshida, Sanichiro and Lamberti, Luciano}},
  isbn         = {{9783319007670}},
  language     = {{eng}},
  location     = {{Illinois, USA}},
  pages        = {{275--281}},
  publisher    = {{Springer}},
  title        = {{Local stiffness identification of beams using shearography and inverse methods}},
  url          = {{http://dx.doi.org/10.1007/978-3-319-00768-7_35}},
  volume       = {{3}},
  year         = {{2014}},
}

Altmetric
View in Altmetric