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Glass epoxy fatigue

GO/glass/epoxy[39] Dispersed and pre-piaced Greater fatigue life 1200-fold 0.02... [Pg.238]

Figure 7.3 Influence of off-axis angle on the fatigue strength of glass/epoxy tubes under pulsating tension—torsion loading [50]. Figure 7.3 Influence of off-axis angle on the fatigue strength of glass/epoxy tubes under pulsating tension—torsion loading [50].
The detrimental effect of the shear stress component and thus of the associated biaxiality ratio A2 is illustrated also in Figures 7.7—7.9. Figure 7.7 shows fatigue data obtained from in-phase bending—torsion tests on glass/epoxy filament-wound... [Pg.162]

Figure 7.7 Influence of biaxiality ratio X2 on the fatigue strength of glass/epoxy [0] bats under... Figure 7.7 Influence of biaxiality ratio X2 on the fatigue strength of glass/epoxy [0] bats under...
Figure 7.10 Influence of a static shear component on the compressive fatigue strength of [0]io woven glass/epoxy tubes [27]. Figure 7.10 Influence of a static shear component on the compressive fatigue strength of [0]io woven glass/epoxy tubes [27].
To conclude the analysis of the influence of biaxiality ratios, it is worth mentioning the work by Perevozchikov et al. [19]. They investigated the fatigue behavior of unidirectional glass/epoxy mbular samples under the combined effect of shear stresses and transverse tension or compression stresses and reported the negative effect of cyclic shear stress components in the case of both tensile and compressive transversal stress. It was also shown that the increase of Xu ratio induced a reduction in the fatigue strength. [Pg.166]

Shindo Y, Miura M, Takeda T, Saito N, Narita F. Cryogenic delamination growth in woven glass/epoxy composite laminates under mixed-mode l/H fatigue loading. Compos Sci Technol 2011 71 647-52. http //dx.doi.Org/10.1016/j.compsdtech.2011.01.006. [Pg.223]

Bi-directional E glass/epoxy has a fatigue performance for zero-tension cyclic loading of monotonie strength of 419 N/mm and a slope of the curve of 42.5 N/mm per decade... [Pg.252]

MandeU J F and Meier U, Fatigue crack propagation in E-glass/epoxy composites, ASTM STP 569, 1975. [Pg.278]

Kenane M, Benzeggagh M L (1997), Mixed mode delamination fracture toughness of imidirectional glass/epoxy composites imder fatigue loading. Composite Science and Technology, 57, 597-605. [Pg.145]

Vauthier E, Abry JC, Bailliez T, Chateauminois A. Interactions between hygrothermal ageing and fatigue damage in unidirectional glass/epoxy composites. Compos Sci Technol 1998 58 687-692. [Pg.811]

Fig. 7.16 SEM observation of failed [0°/90°3]s glass/epoxy coupons under (a) dry and (b) immersed fatigue. Note the evident presence of mode II fracture component in dry case, as contrasted with the pitting and pulling in the immersed circumstance. The white blocks in (b) are salt crystals... Fig. 7.16 SEM observation of failed [0°/90°3]s glass/epoxy coupons under (a) dry and (b) immersed fatigue. Note the evident presence of mode II fracture component in dry case, as contrasted with the pitting and pulling in the immersed circumstance. The white blocks in (b) are salt crystals...
Perreux D, Suri C (1997) A study of the coupling between the phenomena of water absorption and damage in glass/epoxy composite pipes. Compos Sci Technol 57(9-10) 1403-1413 Phillips DC, Scott JM, Buckley N (1978) The effects of moisture on the shear fatigue of fibre composites. In Noton B, SignorelU R, Street K, Phillips L (eds) Proceedings of the 1978 international conference on composite materials (ICCM/2), Toronto, 16-20 April 1978, pp 1544-1559... [Pg.143]

Figure 10.24 Effect of pre-conditioning on coupons undergoing tensile fatigue (a) carbon/epoxy (b) glass/epoxy (c) aramid/epoxy 65% rel. humidity for three months at 20°C (Jones et al.). Figure 10.24 Effect of pre-conditioning on coupons undergoing tensile fatigue (a) carbon/epoxy (b) glass/epoxy (c) aramid/epoxy 65% rel. humidity for three months at 20°C (Jones et al.).
It is not clear from these data whether a fatigue limit does exist. There are, however, significant differences in the torque/shear strain curves when tested statically. Whereas the aramid/epoxy has a linear stress/strain curve, those of carbon/epoxy and glass/epoxy are distinctly non-linear. [Pg.260]

Perrut et al. (2006) inveshgated the repair of dented pipes and performed a low cycle fatigue followed by bursting tests. It was shown that the overwrap system is adequate as a permanent repair for the dented pipes. It was also indicated that using two layers of glass/epoxy did not affect the strain output of the damaged area favourably compared to using one layer only. [Pg.212]

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