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Structural Monitoring and Maintenance
  Volume 4, Number 2, June 2017 , pages 133-151

Experimental and numerical investigation into the damage response of composite sandwich panels to low-velocity impact
Dianshi Feng and Francesco Aymerich

    The paper describes the results of an experimental and numerical investigation into the structural and damage response of sandwich composites to low-velocity impact. Sandwich panels consisting of laminated composite skins with three different layups bonded to a PVC foam core were subjected to impact at various energy levels corresponding to barely visible impact damage (BVID) in the impacted skins. Damage assessment analyses were performed on the impacted panels to characterise the extent and the nature of the major failure mechanisms occurring in the skins. The data collected during the experimental analyses were finally used to assess the predictive capabilities of an FE tool recently developed by the authors for detailed simulation of impact damage in composite sandwich panels. Good agreement was observed between experimental results and model predictions in terms of structural response to impact, global extent of damage and typical features of individual damage mechanisms.
Key Words
    sandwich composites; low-velocity impact; damage; FE simulation
Dianshi Feng: Department of Civil and Environmental Engineering, National University of Singapore, No.1 Engineering Drive 2, Singapore
Francesco Aymerich: Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Via Marengo 2, Cagliari, Italy


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