Low-energy impact response of composite sandwich panels with thermoplastic honeycomb and reentrant cores

Özen İ., Çava K., Gedikli H., Alver Ü., Aslan M.

THIN-WALLED STRUCTURES, vol.156, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 156
  • Publication Date: 2020
  • Doi Number: 10.1016/j.tws.2020.106989
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Keywords: Honeycomb, Reentrant, Composite sandwich panel, Low-energy impact, Finite elements analysis, 3D printer, LOW-VELOCITY IMPACT, NEGATIVE POISSONS RATIO, ALUMINUM FOAM, STRENGTH ANALYSIS, BEHAVIOR, CRASHWORTHINESS, MODEL
  • Karadeniz Technical University Affiliated: Yes


In the present study, the low-energy impact response of woven carbon fibre reinforced plastic (CFRP) composite sandwich panels with thermoplastic honeycomb and reentrant cores was investigated experimentally and numerically under three different impact energies (20 J, 40 J and 70 J). The Acrylonitrile Butadiene Styrene (ABS) honeycomb and reentrant core structures were manufactured in-plane and out-of-plane oriented via 3D printer, and adhesively bonded with two CFRP face sheets. The results indicate that the in-plane reentrant core based composite sandwich panel exhibits better impact strength and energy dissipation behavior than the in-plane and out-of-plane honeycomb core based composite sandwich panels.