In vehicle industry, the design of vehicle should be inclined towards the safety performance aspect, at the same time; it
also should have weight loss of a vehicles structural member. In this study, experimental investigations are performed for
Al/CFRP Hybrid structural members. They are cured by heating to the appropriate curing temperature (130°C) by means
of a heater at the vacuum bag of the autoclave. Because the CFRP is an anisotropic material whose mechanical properties,
such as strength and elasticity, change with its stacking condition, special attention was given to the effects of the
stacking condition on the collapse behavior evaluation of the Al/CFRP Hybrid structural members. The collapse mode
and energy absorption capability of the Al/CFRP Hybrid structural members was analyzed with change of the fiber
orientation. The stacking condition were selected to investigate the effect of the fiber orientation angle (±15°, ±45°, 90°,
0°/90°and 90°/0° where 0°direction coincides with axis of the member)on the energy absorption of the Al/CFRP Hybrid
structural members. The collapse mode and energy absorption capability of Al/CFRP Hybrid structural members was
analyzed with change of the fiber orientation of CFRP.
This paper investigates the crashworthiness of aluminum/CFRP hybrid members subjected to axial loads as changing
CFRP stacking condition. Aluminum members absorb energy by stable plastic deformation, while CFRP members
absorb energy by unstable brittle failure with higher specific strength and stiffness than those in the aluminum member.
In an attempt to achieve a synergy effect by combing the two members, aluminum/CFRP hybrid members were
manufactured and collapse tests were performed for the members. The stacking condition related to the energy
absorption of composite materials is being considered as an issue for the structural efficiency. Therefore, the collapse
tests were performed with change of the stacking condition. Test results showed that the collapse of the aluminum/CFRP
hybrid member complemented unstable brittle failure of the CFRP member due to ductile nature of the inner aluminum
member and the stacking condition of aluminum/CFRP hybrid members influence energy absorption capability and
collapse mode.
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