Application of ultra-high speed photography in identification of the dynamic tensile response of quasi-brittle materials

B. Lukić; D. Saletti; P. Forquin

doi:10.1117/12.2523425

28 January 2019 Application of ultra-high speed photography in identification of the dynamic tensile response of quasi-brittle materials

B. Lukić, D. Saletti, P. Forquin

Author Affiliations +

Proceedings Volume 11051, 32nd International Congress on High-Speed Imaging and Photonics; 1105105 (2019) https://doi.org/10.1117/12.2523425
Event: International Conference on High-Speed Imaging and Photonics 2018, 2018, Enschede, The Netherlands

Abstract

This paper investigates the application of CMOS-based ultra-high speed camera in characterising materials under dynamic tensile loading. A single Hopkinson bar test is used to induce an axial stress wave in the sample and a grid pattern is filmed during the test to obtain time-resolved full-field kinematic measurements. Then the acceleration fields are used to reconstruct the stress information and identify material response. Quasi-brittle materials (e.g. rocks and concrete) present a particular experimental challenge due to small deformation and low stress level at failure. The Shimadzu HPV-X2 acquisition system has been applied for such purpose and its performance was investigated by first performing a spalling test on an aluminium benchmark sample and then applied to testing ordinary concrete.

Citation Download Citation

B. Lukić, D. Saletti, and P. Forquin "Application of ultra-high speed photography in identification of the dynamic tensile response of quasi-brittle materials", Proc. SPIE 11051, 32nd International Congress on High-Speed Imaging and Photonics, 1105105 (28 January 2019); https://doi.org/10.1117/12.2523425

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