Damage behavior of potting materials in sandwich composites with pinned joints

Atas C., Basmaci A.

SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS, vol.22, no.5, pp.517-523, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 5
  • Publication Date: 2015
  • Doi Number: 10.1515/secm-2013-0176
  • Journal Name: SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.517-523
  • Keywords: damage, experimental, mechanical joint, potting material, sandwich composite, MECHANICALLY FASTENED JOINTS, FAILURE BEHAVIOR, INSERTS, STRENGTH, DESIGN
  • Dokuz Eylül University Affiliated: Yes

Abstract

The damage behavior of the potting materials around a pinhole, being used in the mechanical joints of sandwich composites, is investigated experimentally. The sandwich composite panels used in the tests were manufactured by the vacuum-assisted resin infusion technique. Each of the top and bottom face sheets of the panels consisted of two woven E-glass/epoxy layers. As the core material, PVC foam (AIREX (R) C70.55) was used. The potting material consists of an epoxy resin and hardener system mixed with short E-glass fibers (4 wt%). The diameter of the potting material D and the edge distance to the center of pinhole E were considered as the two main varied dimensions. They were chosen as D = 10, 12, 15, and 18 mm and E = 15, 20, and 25 mm. The damage mechanisms of the potting material and sandwich sections are presented by using load-displacement variations and images of the damaged samples, subjected to in-plane pin loading.