Energy absorption properties of filament wound aluminum/CFRP hybrid tubes: Axial, lateral, and bending loadings

Abstract

Composite/aluminum hybrid tube structures were manufactured using the filament winding method by wrapping carbon fibers at different angles on the outer surfaces of aluminum 6063-T5 alloy tubes. Axial, lateral, and three-point bending tests were performed to evaluate the static mechanical characteristics of these structures. The effects of fiber sequences on the load-carrying ability and damage mechanisms of the tubes were examined. Significant improvements were obtained in load-carrying capacity depending on the stacking sequence and number of fiber layers. The experimental studies clearly show that 90° fibers contribute to structural integrity when added on top of other composite layers under loading conditions such as axial, lateral, and bending. Considering this when designing parts operating under such loading conditions is anticipated to facilitate the design. Specific energy improvement factors were calculated for all three load types and compared to published studies. Highlights: This study examines hybrid tubes' load responses for automotive and aerospace applications. Wrapping aluminum tubes with carbon fiber enhances crashworthiness. Energy absorption and structural rigidity are strongly influenced by the winding angle. Increase in composite layers improved the load capacity, energy absorption, and integrity.