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Characterisation of aluminium alloy tubes filled with aluminium alloy integral-skin foam under axial compressive loads

机译：轴向压缩载荷下填充铝合金整体表皮泡沫的铝合金管的特性

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摘要

Novel ex-situ foam-filled tubes (FFTs) were prepared by inserting an integral-skin foam filler into an empty aluminium alloy tube. The aluminium alloy foam filler is prepared by powder compact foaming technique allowing to combine the Al-alloy integral-skin filler with an Al-alloy tube which has not been studied yet. Axial compressive crush performance of the individual components (empty tubes and integral-skin foams) and FFTs was studied and evaluated using uniaxial compression tests, exploring their deformation and failure mechanisms. The FFTs deform by axisymmetric axial crushing mode (concertina mode) with the formation of a single visible concertina fold, but with the formation and propagation of longitudinal cracks. The results confirm an improved crush performance under axial compressive loads by introducing the integral-skin foam as a filler in empty tubes. (C) 2014 Elsevier Ltd. All rights reserved.
机译：新型异位泡沫填充管（FFTs）是通过将整皮泡沫填充剂插入空的铝合金管中而制备的。通过粉末压实发泡技术制备铝合金泡沫填料，该技术允许将铝合金整体表皮填料与尚未研究的铝合金管组合。使用单轴压缩试验研究和评估了各个组件（空管和整体表皮泡沫）和FFT的轴向压缩破碎性能，探讨了它们的变形和破坏机理。 FFT通过轴对称轴向挤压模式（音乐会模式）变形，形成单个可见的手风琴褶皱，但形成并扩展了纵向裂纹。结果证实了通过在空管中引入整体表皮泡沫作为填充剂，在轴向压缩载荷下改善了破碎性能。 （C）2014 Elsevier Ltd.保留所有权利。

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