Experimental investigation of the crash energy absorption of 2.5D-braided thermoplastic composite tubes

Abstract

International audienceBraided composites tubes have been reported to have a great potential in crash energy absorption applications. However, previous works were limited to thermoset braided composite tubes. In this study, we are interest in the crash energy absorption performance of 2.5D braided thermoplastic composite tubes. The sensitivity to materials, fiber orientation and geometry was investigated. Three crushing modes have observed. The splaying and progressive folding were reported for glass/polypropylene tubes and fragmentation mode was observed carbon/polyamide tubes. The last mode has the highest specific energy absorption of 61 kJ/kg. The progressive folding mode has higher specific energy absorption (36 kJ/kg) than the splaying mode. Moreover, the specific energy absorption increases with increasing braiding angle and decreasing length-to-diameter ratio, for glass/polypropylene tubes. On the opposite, the specific energy absorption deceases with braiding angle for carbon/polyamide tubes

Use of recycled carbon staple fibers in an advanced thermoforming process and analysis of its crash performance

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Experimental investigation of quasi-static and intermediate strain rate behaviour of polypropylene glass fibre (PPGF) woven composite

“…[17][18][19][20][21] There is a confirmed tendency to use them in crash and impact resistant compenents. 22 Consequently, it is particularly important to measure and model their mechanical properties over a wide range of strain rates. Hufenback et al 17 investigated the through thickness properties of Twintex using the L shaped specimen.…”

Effects of Geometry, Triggering and Foam-Filling on Crashworthiness Behaviour of a Cylindrical Composite Crash Box

“…Crash boxes have been made in different geometries and some researchers studied the effects of geometry and shape on the crash boxes performance. Thin-walled crash boxes with different cross-sections such as cylindrical [18][19][20][21][22], square [23][24][25][26], cylindrical corrugated composite thin-walled structures [27], hexagonal and octagonal composite thin-walled structures [28,29], cone composite thin-walled structures with elliptical section [20] and composite systems with geometry of cone-cylinder-cone [30] were designed and tested. Elgalai et al [31] conducted extensive experimental work in cylindrical glass/epoxy thin-walled structures under quasi-static compression to study the effects of length on collapse modes behaviour and energy absorption capability of samples.…”