INVESTIGATION OF DEFORMATION BEHAVIOUR OF ALUMINIUM FOAM UNDER HIGH-STRAIN RATE LOADING AND COMPARISON WITH CONVENTIONAL ENERGY ABSORBING MATERIAL

• Abstract:

  The aim of this study is proper description of stress-strain behaviour of the metal foam structure Alporas under high-strain rate loading. Stress-strain response of Alporas specimens is measured during an impact test using a drop tower experiment. Strain of the specimens is evaluated by two independent approaches: i) double numerical integration of acceleration data and ii) digital image correlation technique. Thus, experimental setup is equipped with triaxial accelerometer and high speed camera. Resulting stress-strain curves are compared with behaviour of polystyrene material samples (polystyrene material is commonly used as a shock absorber) obtained from the same testing procedure and with stress-strain function determined from Alporas quasi-static compression testing.
• Keywords:

  digital image correlation, impact test, polystyrene, metal foam
• Download:

  IMEKO-YSESM-2014-034.pdf
• DOI:

  _unreg_tc15-2014.034

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