Abstract
Quasi-static and dynamic crush tests of a unidirectional carbon fiber reinforced plastic (CFRP) circular tube were performed, and its energy absorption capability was controlled using a double-sided plug. It was revealed in the quasi-static crush test that its energy absorption capability was controlled significantly from 8 to 178 kJ/kg by changing the curvature of the plug. The range of energy absorption covers almost all types of CFRP tube reported in the literature. A dynamic crush test up to 55 km/h was then performed by drop weight impact tests. The energy absorption capability of the CFRP tube in the dynamic crush test was very similar to that in the quasi-static crush test. A simple design concept of energy absorption for a CFRP tube, using the double-sided plug, was proposed.
Highlights
The energy absorption capability of a well-designed carbon fiber reinforced plastic (CFRP) laminate is higher than that of metallic materials [1]
The plug used and the resultant energy absorption of the CFRP tube corresponded on a one-to-one basis, except for the plug of (Ro, Ri) = (0, 1)
A double-sided plug was used for progressive crushing of a CFRP tube to control its energy absorption capability
Summary
The energy absorption capability of a well-designed carbon fiber reinforced plastic (CFRP) laminate is higher than that of metallic materials [1]. CFRP laminates are, being used as crash energy absorbing structures [2]-[10]. CFRP absorbs crush energy by brittle fracture while metallic materials absorb by plastic buckling. These failure modes are called progressive crushing and progressive folding, respectively. (2015) Controlling the Energy Absorption Capability of a Unidirectional Carbon Fiber Reinforced Plastic Tube Using a Double-Sided Plug.
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