Interlaminar Fracture Toughness and Fatigue Delamination Growth of CF/EP Composites with Matrices Modified by Nano-silica and CTBN rubber
Experimental investigations were conducted to characterize mode I interlaminar fracture and fatigue delamination growth behaviors of carbon fiber-reinforced epoxy (CF/EP) laminates with modified epoxy matrices using nano-silica particles,a reactive CTBN liquid rubber and a hybrid of nano-silica particles and CTBN liquid rubber.The CF/EP composites were fabricated using unidirectional carbon fibre and a DGEBA epoxy by means of a vacuum resin infusion technique.The mode I interlaminar fracture toughness (GIC) of the CF/EP laminates was increased significantly after the additives were incorporated in the matrices,especially for the laminates containing the hybrid particles of nano-silica and CTBN liquid rubber.Furthermore,nano-silica and CTBN liquid rubber were also found to effectively improve the fatigue performance of the CF/EP laminates by noticeably decreasing the fatigue crack propagation rates,particularly for the laminate with the matrices modified by the hybrid of nano-silica and CTBN liquid rubber.The results confirm that the enhancement in the fracture toughness due to the incorporation of the nanoparticles to the epoxy matrices has been partially transferred into the improvement of the interlaminar fracture resistance of the CF/EP composites,under both static and cyclic loadings.
Interlaminar fracture fatigue delamination growth nano-silica CTBN liquid rubber
Jianing Zhang Shiqiang Deng Lin Ye Zhong Zhang
Center for Advanced Materials Technology,School of Aerospace,Mechanical and Mechatronic Engineering, National Centre for Nanoscience and Technology,100190 Beijing,PR China
国际会议
北京
英文
1-7
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）