Cryogenic small-flaw strength and creep deformation of epoxy resins

The effect of low temperatures on the intermediate and high velocity impact response of CFRPs

“…The variation of the thermal expansion coefficients and the elastic properties with temperature are shown in Fig. 11 (as proposed by several authors [9,11,15,21]). From the laminate stress (Table 3).…”

“…In addition, CFRPs are commonly used in the construction of cryogenic tanks on account of their low thermal conductivity and high dimensional stability, so the static properties of carbon fiber composites at cryogenic temperatures have been the subject of several researches. Usami et al [9] studied the behavior of different epoxy resins at temperatures from 2 269 to 100 8C, observing that strength increases and failure strain decreases as the temperature falls. Korab et al [10] and Rogers et al [11] carried out tests to obtain thermal expansion coefficients for cross-ply, woven, and unidirectional laminates.…”

Pressure and temperature induced electrical resistance change in nano-carbon/epoxy composites

“…At low temperatures (T < À10 °C), the electrical resistance decreases with increasing temperature in all cases. This indicates that the effect of thermal fluctuation induced tunneling conduction is dominant especially at very low temperatures where the thermal expansion of epoxy is reduced significantly [36].…”

Effect of temperature on low velocity impact damage and post-impact flexural strength of CFRP assessed using ultrasonic C-scan and micro-focus computed tomography

“…In contrast, post-impact residual flexural strength does not appear to bear a clear relation with neither impact energy nor impact temperature. Dealing with resin contribution, Usami et al [10] analysed different epoxy resins at different temperatures and found that as the temperature decreased, strength increased and failure strain decreased. The experimental results showed a clear dependence of impact damage on temperature.…”