Micro-CT analysis of deviations in fiber orientation and composite stiffness near the microvascular channels embedded in glass-fiber reinforced composites


SABUNCUOĞLU B., Tanabi H., Soete J., Lomov S.

COMPOSITE STRUCTURES, vol.237, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 237
  • Publication Date: 2020
  • Doi Number: 10.1016/j.compstruct.2020.111896
  • Journal Name: COMPOSITE STRUCTURES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Hacettepe University Affiliated: Yes

Abstract

Microvascular channels, embedded in fiber-reinforced composites are introduced as an efficient tool for internal damage monitoring, self-healing, and thermal management applications. As an adverse effect, vascular channels cause a disturbance in the fibers around the channel region. In this study, first, the fiber orientation around the channel is evaluated using micro-CT images analyzed with VoxTex software. Variation in the stiffness around the channels is determined using micro-homogenization. The results revealed orientation disturbance in the out-of-plane direction with a maximum of about 6 degrees. The micro-channel affected the nearby local stiffness as well, reducing it by up to 19%.