Notch sensitivity of short and 2D plain woven glass fibres reinforced with different polymer matrix composites

Abstract

This research article investigated the notch sensitivity of two different glass fibre architectures, namely short and 2D plain-woven glass fibres reinforced with unsaturated polyester and epoxy matrix composites fabricated by the hand lay-up technique. This was carried out through open hole tension tests at different ratios of the specimen hole diameter to the specimen with three different values (0.1, 0.2, 0.5) compared to the unnotched specimen. The notch sensitivity of these composites was evaluated using the residual tensile strength by the application of Whitney–Nuismer Mathematical Model. The results showed that by using polyester matrix, the notch sensitivity of composites reinforced with plain-woven glass fibre is higher than that of short glass fibre at different D/W ratios. On the other hand, on testing epoxy matrixes, the notch sensitivity of composites reinforced with plain-woven glass fibre is lower than that of short glass fibre at different D/W ratios.

Effect of Environmental Exposure on the notch sensitivity of GFRP Composites Used in Construction

“…The first layer of woven glass fiber was impregnated with the resin and the second layer of resin was poured to impregnate the second layer of the glass using a roller or brush. This method achieves good through wet out of the fibers in the yarn with the resin and the details were reported in Elbadry et al [34]. The fiber volume fraction of the composites was determined according to the ignition loss method according to ASTM D2548 (1968).…”

“…Some researchers [34,39] have been used the characteristic distance principle to determine the notch sensitivity of the composites. It is well known that higher characteristic distance d o means lower sensitivity and vice versa as indicated in Fig.…”

Effect of Glass Fiber Stacking Sequence on the Notch Sensitivity of Glass Fiber Reinforced Epoxy Matrix Composites

“…The details of Whitney-Nuismer Mathematical Model was reported by Elbadry et al [35]. Table 1 indicates the experimental data obtained from tensile tests, which used for the Whitney-Nuismer Mathematical Model calculation to calculate the characteristic distance.…”

Effect of Glass Fibers Stacking Sequence on the Mechanical Properties of Glass Fiber/Polyester Composites

“…On the other hand, SLGC hybrid laminate shows mixed failure modes where extensive fiber pull out with little delamination is observed in the plain woven skin layers and little fibers pull out in the short glass composite in the core of the laminate as also shown in white area in Figure 2. Hybrid laminate of jute and glass typically delaminate at the interface when loaded in tension as reported [17]. Figure 3a1, 3b1 and 3c1 illustrates SEM of failed specimen under tensile loading for different types of composites.…”

“…Recently the authors [17] have studied the notch sensitivity of short and 2D plain-woven glass fibres reinforced with unsaturated polyester and epoxy matrix composites. However, there is a lack of published data on a comparison between the mechanical properties of different glass fiber architecture reinforced polymer composites.…”