Evaluation to Collision Safety Performance of Stacking Angle Different CFRP/Al Circular Member

Title & Authors
Evaluation to Collision Safety Performance of Stacking Angle Different CFRP/Al Circular Member
Yang, Yong Jun; Kim, Young Nam; Cha, Cheon Seok; Jung, Jong An; Yang, In Young;

Abstract
The actual condition is that environmental pollution due to the development of various industries has recently become a serious issue. An interest in improving the gas mileage is rising due to an increase in the number of vehicles in the era of high oil price in particular. In order to solve this problem, priority should be given to light-weight design of car body, However, at present, a design method enabling the conventional steel plate to be replaced is direly needed in order to guarantee passengers` safety according to excessive light-weight design of car body. In this study, in order to apply a design method that could realize fuel savings and environmental pollution prevention through an improvement in gas mileage together with meeting the safety requirements for vehicles, it was supposed that CFRP/Al composites member would be used as primary structural member. And to this end, it was intended to obtain optimum design data by experimentally implementing external impulsive load applied to the car body. According to results of impact test of CFRP/Al composites member, a collapsed shape of folding, crack, and bending occurred. So, it was possible to find that energy was observed. And in case of specimen having an angle of $\small{90^{\circ}}$ in the outermost layer and stack sequence of $\small{[90^{\circ}{_2}/0^{\circ}2}$$\small{]}$$\small{s}$, its collapsed length was shown to be short. Therefore, it was possible to find that the absorbed energy was shown to be higher by 20% or above at the maximum.
Keywords
absorbed energy;CFRP/Al composites member;collapsed mode;impact collapsed experiment;stacking angle;
Language
Korean
Cited by
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