Mechanical behaviour of pultruded glass fibre reinforced polymer composites at elevated temperature: Experiments and model assessment

Temperature-sensitive mechanical properties of GFRP composites in longitudinal and transverse directions: A comparative study

“…This is because the former mechanical property was mainly governed by the resin properties and the corresponding fibre-matrix interaction while the latter property was predominantly influenced by the fibre properties [28,29]. Interestingly, this observation corroborates with that of Correia et al [9] who conducted an in-plane shear strength tests, through 10° off-axis tensile tests, on GFRP composites. From their experiment, they concluded that the relative reduction of shear strength was significantly larger than that of shear stiffness due to glass fibres that retain considerable amount of room temperature stiffness.…”

“…Based on these studies, the strength, stiffness and interfacial bonding between the fibres and resin of a pultruded GFRP section decrease as the temperature increases [6][7][8]. In particular, the aforementioned mechanical properties drop rapidly when the temperature approaches and/or exceeds the glass transition temperature (Tg) of the polymer matrix, typically ranging from 60 o C to 140 o C [9]. The elastic modulus of pultruded GFRP composites cut longitudinally (along the direction of pultrusion) is different from those cut transversely; however, dynamic mechanic analysis (DMA) indicated thermal degradation in both directions during the glass transition stage [8].…”

Modelling the effect of temperature on the probabilistic stress–life fatigue diagram of glass fibre–polymer composites loaded in tension along the fibre direction

“…The model is based on the assumption that this SF can describe the failure of secondary molecular bonds governing the polymer's stiffness. Although it was originally limited to describe the evolution of polymer stiffness as a function of temperature, Correia et al [42] showed that the formulation also provides a relatively good fit on data for strength of composites as a function of temperature. However, Gibson et al [43] suggest that Mahieux and Reifsnider's model tends to exhibit an excessively strong curvature in the low temperature region to accurately describe the actual strength or modulus behaviour.…”

“…Correia et al [42] proposed an alternative to Mahieux and Reifsnider's model based on the Gompertz cumulative distribution function (CDF, with CDF = 1 − SF). However, since the Gompertz CDF has an even more abrupt initial transition than Weibull's SF, the problem noted by Gibson et al [43] is not improved on.…”

Mechanical Properties of Glass Fiber Reinforced Polymers Members for Structural Applications

“…The knowledge about the structural behavior of GFRP members has advanced significantly in the last few years and, such advances have been incorporated in design specifications at a fairly rapid rate [15][16][17][18][19][20][21][22][23][24][25] . Indeed, different characteristics and applications of composites profiles have also been addressed by several authors -while the works of Correia et al 26 , Pires 27 and Vieira 28 examined the mechanical performance of polymeric reinforced with fibers profiles subjected to high temperatures. Other authors [29][30][31][32][33][34] investigated the mechanical behavior of GFRP members.…”