Prediction model for the impact response of glass fibre reinforced aluminium foam sandwiches

Abstract The use of sandwich structures combines low weight with high energy absorbing capacity, so they are suitable for applications in the transport industry (automotive, aerospace, shipbuilding industry), where the “lightweight design” philosophy and the safety of vehicles are very important aspects. The goal of this paper was the analysis of the bending and the low - velocity impact response of aluminium foam sandwiches reinforced by the outer skins made of glass fibre reinforced epoxy matrix. The results were compared with those obtained for aluminium foam sandwiches without glass fibre skins. An analytical model for the peak load prediction under low velocity impact was developed and the predicted values are in good agreement with the experimental measurements. The impact response of the sandwiches was investigated using a theoretical approach, based on the energy balance model and the model parameters were obtained by the tomographic analyses of the impacted panels. This combined experimental and theoretical investigation has particular importance for applications that require lightweight composite structures with a high capacity of energy dissipation, such as the transport industry, where problems of collision and crash have increased in the last years.

[1]  G. Epasto,et al.  Collapse modes in aluminium honeycomb sandwich panels under bending and impact loading , 2012 .

[2]  Serge Abrate,et al.  Impact on Composite Structures , 1998 .

[3]  Kumar P. Dharmasena,et al.  Effect of core topology on projectile penetration in hybrid aluminum/alumina sandwich structures , 2013 .

[4]  Zhigang Wei,et al.  Deformation and failure mechanism of dynamically loaded sandwich beams with aluminum-foam core , 2003 .

[5]  Anthony M. Waas,et al.  Experimental and numerical study on the low-velocity impact behavior of foam-core sandwich panels , 2013 .

[6]  Magnus Langseth,et al.  A numerical model for bird strike of aluminium foam-based sandwich panels , 2006 .

[7]  L. K. Seah,et al.  Quasi-Static and Low-Velocity Impact Failure of Aluminium Honeycomb Sandwich Panels , 2006 .

[8]  Xiao Han,et al.  Dynamic response of clamped sandwich beam with aluminium alloy foam core subjected to impact loading , 2013 .

[9]  John S. Tomblin,et al.  Impact Damage Resistance and Tolerance of Honeycomb Core Sandwich Panels , 2008 .

[10]  Zhijun Zheng,et al.  Static and low-velocity impact behavior of sandwich beams with closed-cell aluminum-foam core in three-point bending , 2008 .

[11]  John Banhart,et al.  Aluminium Foam Sandwich Panels: Manufacture, Metallurgy and Applications , 2008 .

[12]  Idapalapati Sridhar,et al.  Impact modeling of foam cored sandwich plates with ductile or brittle faceplates , 2012 .

[13]  Holm Altenbach,et al.  Mechanics of advanced materials for lightweight structures , 2011 .

[14]  Jakob Kuttenkeuler,et al.  On structural design of energy efficient small high-speed craft , 2011 .

[15]  Ronald E. Miller,et al.  Failure of sandwich beams with metallic foam cores , 2001 .

[16]  A. Rajaneesh,et al.  Relative performance of metal and polymeric foam sandwich plates under low velocity impact , 2014 .

[17]  Mechanical Behavior of Thermoplastic FML-reinforced Sandwich Panels Using an Aluminum Foam Core: Experiments and Modeling , 2010 .

[18]  Jose Maria Kenny,et al.  A comparative evaluation of crashworthy composite sandwich structures , 2007 .

[19]  M. Ashby,et al.  The fatigue strength of sandwich beams with an aluminium alloy foam core , 2001 .

[20]  John Banhart,et al.  Aluminium foams for transport industry , 1997 .

[21]  G. Chai,et al.  Damage and failure mode maps of composite sandwich panel subjected to quasi-static indentation and low velocity impact , 2013 .

[22]  M. Ricotta,et al.  Energy absorption in composite laminates under impact loading , 2013 .

[23]  Genevieve Langdon,et al.  The blast and impact loading of aluminium foam , 2013 .

[24]  Robert F. Singer,et al.  The investigation of morphometric parameters of aluminium foams using micro-computed tomography , 2002 .

[25]  Vincenzo Crupi,et al.  Comparison of aluminium sandwiches for lightweight ship structures: Honeycomb vs. foam , 2013 .

[26]  Lorna J. Gibson,et al.  Size effects in metallic foam core sandwich beams , 2002 .

[27]  Q. Qin,et al.  Low-velocity impact response of fully clamped metal foam core sandwich beam incorporating local denting effect , 2013 .

[28]  Michelle S. Hoo Fatt,et al.  Dynamic models for low-velocity impact damage of composite sandwich panels – Part B: Damage initiation , 2001 .

[29]  Norman A. Fleck,et al.  Material selection in sandwich beam construction , 2004 .

[30]  Vincenzo Crupi,et al.  Low-velocity impact strength of sandwich materials , 2011 .

[31]  Wesley J. Cantwell,et al.  The low velocity impact response of foam-based sandwich structures , 2002 .

[32]  Massimiliano Avalle,et al.  Mechanical Models of Cellular Solids, Parameters Identification from Experimental Tests , 2005 .