Compression after impact behavior of composite foam-core sandwich panels

Low-velocity impact tests and compression after impact (CAI) experiments were conducted on composite foam-core sandwich (FCS) panels. The impact tests revealed that the damage depth of the FCS panels increases with an increase in the impact energy. The CAI experiments revealed that the residual compressive strength of the FCS panels decreased with an increase in the impact energy. The local buckling of the FCS panels without impact damage occurred during compression, which was observed by the strain bifurcation phenomena using electrical strain gauge measurements. However, the large strain gradient and compression failure of the FCS panels with impact damage occurred during compression, as observed by the full-field deformation using three-dimensional digital image correlation (3D-DIC) measurements. The numerical simulations using the finite element method (FEM) were consistent with the observed failure phenomena, i.e., the damage at the impact site weakening the compressive strength of the FCS panels.

[1]  F. Balıkoğlu,et al.  Compression after low velocity impact tests of marine sandwich composites: Effect of intermediate wooden layers , 2018 .

[2]  Dimitrios Zarouchas,et al.  Barely visible impact damage assessment in laminated composites using acoustic emission , 2018, Composites Part B: Engineering.

[3]  G. Zhou.  Static behaviour and damage of thick composite laminates , 1996 .

[4]  Sauvik Banerjee,et al.  Damage-induced acoustic emission source monitoring in a honeycomb sandwich composite structure , 2019, Composites Part B: Engineering.

[6]  J. C. Prichard,et al.  A model for the reduction in compression strength of continuous fibre composites after impact damage , 1993 .

[7]  Z. Hashin.  Failure Criteria for Unidirectional Fiber Composites , 1980 .

[8]  Anthony N. Palazotto,et al.  Low-velocity impact damage initiation in graphite/epoxy/Nomex honeycomb-sandwich plates , 1998 .

[9]  G. Zhou,et al.  The use of experimentally-determined impact force as a damage measure in impact damage resistance and tolerance of composite structures , 1998 .

[10]  Yulfian Aminanda,et al.  Core crush criterion to determine the strength of sandwich composite structures subjected to compression after impact , 2008 .

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

[12]  E. Guglielmino,et al.  Assessment of Damage Evolution in Sandwich Composite Material Subjected to Repeated Impacts by Means Optical Measurements , 2016 .

[13]  G.A.O. Davies,et al.  Compression after impact strength of composite sandwich panels , 2004 .

[14]  M. Wisheart.  Impact properties and finite element analysis of a pultruded composite system , 1996 .

[15]  Christophe Baley,et al.  Improved impact performance of marine sandwich panels using through-thickness reinforcement: Experimental results , 2010 .

[16]  Jifeng Zhang,et al.  Study on the low-velocity impact response and CAI behavior of foam-filled sandwich panels with hybrid facesheet , 2015 .

[17]  Peter Davies,et al.  Damage development in thick composite tubes under impact loading and influence on implosion pressure: experimental observations , 2005 .

[18]  Isaac M Daniel,et al.  Low velocity impact behavior of composite sandwich panels , 2005 .

[19]  Li Ma,et al.  The residual compressive strength of impact-damaged sandwich structures with pyramidal truss cores , 2013 .

[20]  Leonardo Lecce,et al.  Simulation of low velocity impact on composite laminates with progressive failure analysis , 2013 .

[21]  De Xie,et al.  Low-velocity impact response and post-impact flexural behaviour of composite sandwich structures with corrugated cores , 2018 .

[22]  Brian Falzon,et al.  Predicting low velocity impact damage and Compression-After-Impact (CAI) behaviour of composite laminates , 2015 .

[23]  Guoqiang Li,et al.  Debonding and impact tolerant sandwich panel with hybrid foam core , 2013 .

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

[25]  Constantinos Soutis,et al.  Modelling damage evolution in composite laminates subjected to low velocity impact , 2012 .

[26]  D. Hull,et al.  Damage mechanism characterization in composite damage tolerance investigations , 1993 .

[27]  M.F.S.F. de Moura,et al.  Prediction of low velocity impact damage in carbon–epoxy laminates , 2002 .