Advertisement

Compression Tests on CFRP Analysed by Digital Image Correlation

  • C. Barile
  • C. Casavola
  • G. Pappalettera
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

Carbon Fiber Reinforced Plastic materials (CFRP) are widely used for aeronautical and aerospace applications since they offer high specific mechanical properties. However, when damaged, their behavior is quite concerning and, if the damages are not visible on the surface their use could become highly dangerous if not properly monitored. Although traditional non-destructive techniques enable a posteriori detection of damage at successive stages of the life of these materials, it seems more difficult to monitor in-situ the evolution of internal damage, especially in opaque materials. In order to obtain more complete information about the damage mechanisms it is necessary to implement advanced strain analysis approach like those based upon full-field measurements. By using these techniques, in fact, it is possible to get information about the strain map all over the surface of the sample. In this paper, in particular, an approach based on the Digital Image Correlation was used and it was applied to analyze the behavior of CFRP specimens subjected to compression load with anti-buckling fixture.

Keywords

Carbon Fibre Reinforced Plastic materials (CFRP) Composite material Compression tests Digital Image Correlation (DIC) Buckling 

Notes

Acknowledgment

Research co-funded by Fondo di Sviluppo e Coesione 2007–2013—APQ Ricerca Regione Puglia “Regional program to support smart specialization and social and environmental sustainability—FutureinResearch”.

References

  1. 1.
    Campbell Jr., F.C.: Manufacturing Technology for Aerospace Structural Materials. Elsevier, Amsterdam (2006)Google Scholar
  2. 2.
    Barile, C., Casavola, C., Pappalettere, C., Tursi, F.: RFI composite materials behaviour. Struct Integr Life. 10(3), 209–213 (2010)Google Scholar
  3. 3.
    Barile, C., Casavola, C., Pappalettere, C.: The influence of stitching and unconventional fibres orientation on the tensile properties of CFRP laminates. Compos. Part B Eng. 110, 248–254 (2017)CrossRefGoogle Scholar
  4. 4.
    Varma, I.K., Gupta, V.B.: Thermosetting Resin Properties, vol. 2.; ISBN: 0-080437206. IIT, Delhi, India (2000)Google Scholar
  5. 5.
    Barile, C., Casavola, C., Pappalettera, G., Pappalettere, C.: Hybrid characterization of laminated wood with ESPI and optimization methods. In: Jin, H., Sciammarella, C., Furlong, C., Yoshida, S. (eds.) Imaging Methods for Novel Materials and Challenging Applications, Conference Proceedings of the Society for Experimental Mechanics Series, vol. 3, pp. 75–83. Springer, Berlin (2013)CrossRefGoogle Scholar
  6. 6.
    Barile, C., Casavola, C., Pappalettera, G., Pappalettere, C., Tursi, F.: Drilling speed effects on accuracy of HD residual stress measurements. In: Rossi, M., Sasso, M., Connesson, N., Singh, R., DeWald, A., Backman, D., Gloeckner, P. (eds.) Residual Stress, Thermomechanics & Infrared Imaging, Hybrid Techniques and Inverse Problems, Conference Proceedings of the Society for Experimental Mechanics Series, vol. 8, pp. 119–125. Springer, Berlin (2014)CrossRefGoogle Scholar
  7. 7.
    Barile, C., Casavola, C., Pappalettera, G., Pappalettere, C.: Mechanical characterization of SLM specimens with speckle interferometry and numerical optimization. In: Proulx, T. (ed.) Experimental and Applied Mechanics, Conference Proceedings of the Society for Experimental Mechanics Series, vol. 6, pp. 837–843. Springer, Berlin (2011)Google Scholar
  8. 8.
    Barile, C., Casavola, C., Pappalettera, G., Pappalettere, C.: Residual stress measurement by electronic speckle pattern interferometry: A study of the influence of geometrical parameters. Struct Integr Life. 11(3), 177–182 (2011)Google Scholar
  9. 9.
    Sutton, M.A., Orteu, J.J., Schreier, H.W.: Image Correlation for Shape, Motion and Deformation Measurements. Springer Science, Berlin (2009)Google Scholar
  10. 10.
    Ajovalasit, A.: Analisi sperimentale delle tensioni con la fotomeccanica (2009)Google Scholar
  11. 11.
    ASTM standard 7137 (Compression After Impact "CAI")Google Scholar
  12. 12.
    Zhu, Y.-K., Tian, G.-Y., Lu, R.-S., Zhang, H.: A review of optical NDT technologies. Sensors (Basel). 11(8), 7773–7798 (2011)CrossRefGoogle Scholar
  13. 13.
    Trahair, N.S.: Flexural Torsional Buckling of Structures. CRC Press, London (1993)Google Scholar
  14. 14.
    Casavola, C., Giannoccaro, R., Pappalettere, C., Soutis, C.: Open hole compressive strength of composite laminates and sandwich panels: Comparison between Budiansky-Fleck-Soutis model and experiments. Plastics Rubber Compos. 41(4–5), 199–208 (2012)CrossRefGoogle Scholar
  15. 15.
    Boccaccio, A., Casavola, C., Lamberti, L., Pappalettere, C.: Structural response of polyethylene foam-Based sandwich panels subjected to edgewise compression. Materials (Basel). 6(10), 4545–4564 (2013)CrossRefGoogle Scholar

Copyright information

© The Society for Experimental Mechanics, Inc. 2019

Authors and Affiliations

  1. 1.Dipartimento di Meccanica, Matematica e Management (DMMM)Politecnico di BariBariItaly

Personalised recommendations