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Steel and Composite Structures
  Volume 25, Number 3, October30 2017 , pages 327-335

Bending behavior of aluminum foam sandwich with 304 stainless steel face-sheet
Chang Yan and Xuding Song

    o gain more knowledge of aluminum foam sandwich structure and promote the engineering application, aluminum foam sandwich consisting of 7050 matrix aluminum foam core and 304 stainless steel face-sheets was studied under three-point bending by WDW-T100 electronic universal tensile testing machine in this work. Results showed that when aluminum foam core was reinforced by 304 steel face-sheets, its load carrying capacity improved dramatically. The maximum load of AFS in three-point bending increased with the foam core density or face-sheet thickness monotonically. And also when foam core was reinforced by 304 steel panels, the energy absorption ability of foam came into play effectively. There was a clear plastic platform in the load-displacement curve of AFS in three-point bending. No crack of 304 steel happened in the present tests. Two collapse modes appeared, mode A comprised plastic hinge formation at the mid-span of the sandwich beam, with shear yielding of the core. Mode B consisted of plastic hinge formation both at mid-span and at the outer supports.
Key Words
    composite materials; three-point bending; mechanical properties; failure mechanism
Chang Yan and Xuding Song:Key Laboratory of Road Construction Technology & Equipment of Chang\'an University, MOE, Xi\'an, Shaanxi 710064 China

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