Tensile properties of composite metal foam and composite metal foam core sandwich panels

被引:17
|
作者
Marx, Jacob [1 ]
Rabiei, Afsaneh [1 ]
机构
[1] North Carolina State Univ, Adv Mat Res Lab, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA
关键词
Composite metal foam; tension; sandwich panel; metal foam; diffusion bonding; COLLAPSE MECHANISMS; STEEL FOAMS; FABRICATION; BEHAVIOR; DEFORMATION; FAILURE; BEAMS; MANUFACTURE;
D O I
10.1177/1099636220942880
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Steel-steel composite metal foam (SS-CMF) and composite metal foam core sandwich panels (SS-CMF-CSP) were manufactured and tested under quasi-static tension. The SS-CMF-CSP were manufactured by attaching stainless steel face sheets to a SS-CMF core using solid-state diffusion bonding. SEM imaging was used to inspect the microstructure of SS-CMF and compare it to that of SS-CMF-CSP. The results indicate a cohesive bond line at the interface of the core and the face sheets. The bare SS-CMF samples had an ultimate tensile strength between 75-85 MPa and a failure strain between 7.5-8%. The normalized tensile strength of the SS-CMF was approximately 24 MPa/(g/cm(3)), 410% higher than other comparable metal foams, with a specific energy absorption of 0.95 J/g under tension. The uniform porosities and strong bonding between the sphere wall and matrix seem to be the strengthening factor of SS-CMF under tension when compared to other metal foams. The ultimate tensile strength of the SS-CMF-CSP was 115% stronger than the bare SS-CMF at 165 MPa with an average failure strain of 23%. The normalized strength of the SS-CMF-CSP was 52% higher than the bare SS-CMF. The modulus of elasticity was approximated using the rule of mixtures for the SS-CMF and the SS-CMF-CSP and the experimental results were found to lie within the calculated upper and lower bounds.
引用
收藏
页码:3773 / 3793
页数:21
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