Comparative study of elastic properties and mode I fracture energy of carbon nanotube/epoxy and carbon fibre/epoxy laminated composites

Abstract

A comparative study of elastic properties and mode I fracture energy has been presented between conventional carbon fibre (CF)/epoxy and advanced carbon nanotube (CNT)/epoxy laminated composite materials. The volume fraction of CNT fibres has been considered as 15%, 30%, and 60% whereas; the volume fraction of CF has been kept constant at 60%. Three stacking sequences of the laminates viz.[0/0/0/0], [0/90/0/90] and [0/30/–30/90] have been considered in the present analysis. Periodic microstructure model has been used to calculate the elastic properties of the laminated composites. It has been observed analytically that the addition of only 15% CNT in epoxy will give almost the same value of longitudinal Young’s modulus as compared to the addition of 60% CF in epoxy. Finite element (FE) analysis of double cantilever beam specimens made from laminated composite has also been performed. It has been observed from FE analysis that the addition of 15% CNT in epoxy will also give almost the same value of mode I fracture energy as compared to the addition of 60% CF in epoxy. The value of mode I fracture energy for [0/0/0/0] laminated composite is two times higher than the other two types of laminated composites.

Experimental Characterization of Internal Structure and Physical Properties of Unidirectional Ply‐Level Hybrid Carbon Composite Material

“…The values determined for the Poisson ratio for all tested configurations have close values and are in the range of values reported by other authors for unidirectional carbon fiber composites. [ 23,57,58 ]…”

“…The values determined for the Poisson ratio for all tested configurations have close values and are in the range of values reported by other authors for unidirectional carbon fiber composites. [23,57,58] To compare the failure stress of the composites for 0°tensile loading, as previously mentioned in Section 2.2.5, a geometrical scaling was performed in advance. The corresponding results are presented in Figure 20a.…”

Effect of Fiber Stacking Sequence on Mechanical Property of Polymeric Composite through VARTIM Method and Metallographic Examination

“…Therefore, it is possible to incorporate high elongation fibers (glass) into low elongation fibers (carbon) for increasing the failure strain. There are many parametres affecting on mechanical property of epoxy composites including matrix/fiber types and fracture mechanics (Hashim et al, 2017;Zhang et al,2019;Ma et al,2017;Ma et al,2016;Agarwal et al,2014), nano addition (Xu & Hoa, 2008;Sanchez et al, 2013;Phong et al, 2013;Bora & Kirtania, 2020), interface bonding (Liu et al, 2014;Li et al, 2013), applied methods (Sahin et al, 2021;Bodaghi et al,2016), stacking sequence effect on hybrid including carbon/glass, carbon/basalt, glass/carbon (Turla et al, 2014;Ary Subagia et al, 2014;Zhang et al, 2012), carbon epoxy, carbon/kenaf and carbon/basalt/epoxy (Artemenko&Kadykova, 2008;Yusuff et al2021;Reis et al2012);characterization (Çecen & Sarıkanat, 2008;Ozsoy et al, 2015;Shokriech & Omidi, 2009;Pandya et al, 2011) and effect of orientation (Yokozeki et al2005;Rahmani et al2014;Mohamed Kaleemulla& Sideswarappa, 2010;Agrawal&Bhattacharya, 2021;GuruRaja&HariRao,2013) for manufacturing the composites. The purpose of this study is to see the effects of stacking sequence of fibers on mechanical properties of composites and a comparison was made on two types of fabrics on hardness/deformation depth through Stereo Microscope (SM).…”