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Broadband nonlinear elastic wave modulation spectroscopy for inspection of stiffened aerospace CFRP panels Ghent University
Geometrical and deep learning approaches for instance segmentation of CFRP fiber bundles in textile composites Ghent University
Segmenting micro-Computed Tomography (mu CT) images of textile composites is a necessary step before modeling the material at the mesoscale. However, the accurate segmentation of fiber bundles (or tows) remains a challenge in carbon fiber reinforced textile composites. Segmentation approaches based on local fiber orientation perform well in recognizing individual tows only under ideal conditions, namely when the local fiber orientation bordering ...
Experimental Characterization of the Torsional Damping in CFRP Disks by Impact Hammer Modal Testing KU Leuven
Composite materials are widely used for their peculiar combination of excellent structural, mechanical, and damping properties. This work presents an experimental study on the dissipation properties of disk-shaped composite specimens exploiting vibration tests. Two different polymer matrix composites with the same number of identical laminae, but characterized by different stacking sequences, namely unidirectional and quasi-isotropic ...
An integrated NDT approach for damage assessment of CFRP composites under complex static and fatigue loads Vrije Universiteit Brussel
Carbon fiber polymer composite materials are considered one of the most promising lightweight candidates for load bearing applications in many engineering fields. Damage during loading of composite materials can appear under many different modes, like for instance matrix cracking, interlaminar delaminations and fiber breakage. Due to the anisotropy of composites, leading to complex stress states in the individual plies, the damage sequence is ...
Multi-instrument in-situ damage monitoring in quasi-isotropic CFRP laminates under tension KU Leuven
© 2018 Digital Image Correlation monitoring of the surface strains, microscopic in-situ observations of the micro-damage on the specimen edge and Acoustic Emission (AE) are utilized simultaneously during tension tests of quasi-isotropic carbon fibre reinforced polymer composites. It is found that the cluster analysis for characteristic parameters of AE events (the main being the signal amplitude and frequency) does not unambiguously identify the ...