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|a Bull, D.J.
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|a Scott, A.E.
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|a Spearing, S.M.
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|a Sinclair, I.
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|a The influence of toughening-particles in CFRPs on low velocity impact damage resistance performance
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|c 2014-03.
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|u https://eprints.soton.ac.uk/361039/1/The%2520influence%2520of%2520toughening-particles%2520in%2520CFRPs%2520on%2520low%2520velocity%2520impact%2520damage%2520resistance%2520performance.pdf
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|a The role of particle-toughening for increasing impact damage resistance in carbon fibre reinforced polymer (CFRP) composites was investigated. Five carbon fibre reinforced systems consisting of four particle-toughened matrices and one system containing no toughening particles were subjected to low velocity impacts ranging from 25 J to 50 J to establish the impact damage resistance of each material system. Synchrotron radiation computed tomography (SRCT) enabled a novel approach for damage assessment and quantification. Toughening mechanisms were detected in the particle-toughened systems consisting of particle-resin debonding, crack-deflection and crack-bridging. Quantification of the bridging behaviour, increase in crack path length and roughness was undertaken. Out of the three toughening mechanisms measured, particle systems exhibited a larger extent of bridging suggesting a significant contribution of this toughening mechanism compared to the system with no particles
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