Numerical and Experimental Investigation of the Hydrostatic Performance of Fibre Reinforced Tubes

Abstract

The increasing demands in subsea industry such as oil and gas, led to a rapidly growing need for the use of advanced, high performance, lightweight materials such as composite materials. E-glass fibre laminated pre-preg, filament wound and braided tubes were tested to destruction under hydrostatic external pressure in order to study their buckling and crushing behaviour. Different fibre architectures and wind angles were tested at a range of wall thicknesses highlighting the advantage that hoop reinforcement offers. The experimental results were compared with theoretical predictions obtained from classic laminate theory and finite element analysis (ABAQUS) based on the principal that the predominant failure mode was buckling. SEM analysis was further performed to investigate the resulting failure mechanisms, indicating that the failure mechanisms can be more complex with a variety of observed modes taking place such as fibre fracture, delamination and fibre-matrix interface failure.

Optimisation of optical fibre using micro-braiding for structural health monitoring

“…The increase in stress value observed in the MBOF is due to the presence of glass fibre tows which have a high strength (1663 ± 230 MPa). However, as a result of braid angle (Atas et al, 2017; Gautam et al, 2016, 2017, 2015; Pavlopoulou et al, 2017) and due to the presence of crimp (due to interlacement), the overall contribution of glass tows towards the tensile strength gets reduced.…”

Experimental Study on Hoop Stress Affecting Braided Carbon Fiber Reinforced Plastics Subjected to Internal Pressure

“…A summary of the relation between the hoop stress and specimens when the internal pressure is 20 MPa in the elastic region is presented in Fig.7 and Table 3. When the elastic modulus of CFRP (E 1 ) and steel (E 2 ) are known, the hoop stress of CFRP can be determined using equation (2). While, the hoop stress of SS t2 is determined using equation 3.…”

“…Other studies investigated the burst pressure of fiber reinforced tubing fabricated using E-glass fiber with different structures (e.g., laminated prepreg, filament wound, and braided tubes) by applying simplified modeling approaches and experimental analyses. It was found that filament wound and braided tubes provided greater potential to resist hydrostatic pressures compared to prepreg laminated tubes [2]. Methods for analyzing isotropic elastic tubes were applied to study the stress distribution of triaxial braided carbon T-700 composite tubes under internal pressure, and to calculate hoop stress; large local strain variations and large strains at the composites were noted [3].…”

Viscoelastic behavior of aloevera/hemp/flax sandwich laminate composite reinforced with BaSO4: Dynamic mechanical analysis

“…The application of natural fiber composites is already discovered to develop automobile (interior and exterior) parts, in packing containers, building doors and window panels, railway seats and in aerospace industries. In another aspect, it reduces the manufacturing, maintenance and recycling costs [4,15,16]. The current literature deals with the mechanical, thermal, magnetic, viscoelastic, vibrational, acoustic and machining property enhancement in the composite material for the proper applications [17–23].…”