Effect of face sheet material on the indentation response of metallic foams
Effect of face sheet material on the indentation response of metallic foams
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DOI：
10.1007/s10853-006-0373-4
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发表时间：
2007-02
影响因子：
4.5
通讯作者：
K. Mohan;T. Yip;I. Sridhar;H. P. Seow
中科院分区：
文献类型：
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作者：
K. Mohan;T. Yip;I. Sridhar;H. P. Seow
当受到冲击和爆炸载荷时，包含金属泡沫芯的夹层板会因局部压痕而失效。本文在准静态加载条件下对带面板的泡沫铝的压痕响应进行了实验研究，其行为表现为弹性、弹理想塑性和弹塑性应变硬化。测试是使用由硬工具钢制成的扁平和半球形压头在带有和不带有面板的泡沫铝块上进行的。面板的厚度从 0.5 毫米到 1.0 毫米不等，以评估厚度对压痕行为的影响。讨论了引发故障的竞争故障模式。结果表明，压痕行为很大程度上取决于所用面板的类型和厚度。
Sandwich panels comprising metallic foam cores fail by localized indentation when subjected to impact and blast loads. In this paper the indentation response of aluminum foams with face sheets, whose behavior represent elastic, elastic–ideally plastic and elastic–plastic strain hardening, were investigated experimentally under quasi-static loading conditions. The tests were carried out using flat and hemispherical indenters made of stiff tool steel on the blocks of aluminum foam with and without face sheets. Thickness of the face sheets was varied from 0.5 mm to 1.0 mm to evaluate the thickness effect on the indentation behavior. Competing failure modes for the initiation of failure are discussed. Results show that the indentation behavior is strongly dependent on the type and thickness of the face sheets used.