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Talks and Poster Presentations (without Proceedings-Entry):

M. Rodríguez-Hortalá, G. Requena, F. Sket, J. Molina-Aldareguia, E. Maire, L. Salvo, M. Scheel:
"In-situ synchrotron microtomography during tensile deformation of a ± 45° cross-ply carbon fibre reinforced epoxy laminate";
Poster: Conference on Industrial Computed Tomography, Wels; 09-19-2012 - 09-21-2012.



English abstract:
Synchrotron microtomography was carried out in situ during tensile deformation of a notched sample with a notch radius of 1 mm at the ID15A beamline of the European Synchrotron Radiation Facility (ESRF). The first tomographic scan was performed using a preload of aprox. 4.5 MPa. Then, the sample was deformed stepwise using constant deformation steps at a strain rate of 5 µm/s. Tomographic scans were carried out after each deformation step yielding a total of 10 scans. The growth of existing cracks, the formation of new ones and delamination between plies were detected. The volume and area fraction of cracks shows a linear increase above a threshold stress of 25 MPa. Initial cracks induced during sample machining showed a stronger influence on damage evolution than manufacturing porosity. The reorientation of the fibres during loading was analysed based on the local structure tensor of the reconstructed slices.

Keywords:
Carbon fibre reinforced epoxy laminate, in-situ tensile tests, synchrotron microtomography, damage evolution, fibre orientation.

Created from the Publication Database of the Vienna University of Technology.