Meso-scale study of non-linear tensile response and fiber trellising mechanisms in woven composites

Behrad Koohbor, Suraj Ravindran, Addis Kidane

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The non-linear deformation response of plain woven carbon fiber-reinforced composites is experimentally studied at meso-scales. Stereovision digital image correlation is utilized to capture the full-field strain distribution over a 10 × 10 mm2 area of interest located at the center of the specimens. The evolution of local strains on the fiber bundles and matrix-rich regions as a function of loading is extracted. The effect of fiber orientation angle on fiber bundles stretch ratio and their angle of rotation (fiber trellising) and the related underlying failure mechanisms are analyzed using the measured full-field displacement data. The results indicate that the local load-bearing mechanisms are different in on-axis and off-axis loading conditions, whereas the larger global failure strain noticed in off-axis conditions is attributed to the occurrence of fiber rotation. The fiber trellising is also shown to promote high local shear strain and consequently leads to the protrusion of the matrix material on the deformed specimen surface.

Original languageEnglish (US)
Pages (from-to)986-995
Number of pages10
JournalJournal of Reinforced Plastics and Composites
Volume35
Issue number12
DOIs
StatePublished - Jun 1 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Meso-scale study of non-linear tensile response and fiber trellising mechanisms in woven composites'. Together they form a unique fingerprint.

Cite this