Abstract
Fiber/metal hybrid tubes are lightweight and can improve the crashworthiness and energy absorption performance of vehicles. Thermoplastic-reinforced polypropylene composite/aluminum hybrid tubes (Al/CFPP hybrid tubes) with different interface conditions were obtained by three different post-treatment heating processes. Their energy absorption characteristics under axial and multi-angle loads were investigated. The results showed that increasing the interfacial bonding strength greatly improved the synergy and enhancement between heterogeneous materials and also improved the anti-collision and energy absorption characteristics of the hybrid tubes. Upon increasing the loading angle, the energy absorption characteristics of all samples decreased to varying degrees, and the interfacial bonding strength decreased the energy absorption performance of the Al/CFPP hybrid tube to a lesser extent.
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