Impact Resistance of Three-dimensional Woven Fabric Composites
Abstract
This paper determined the perforation thresholds of laminated, stitched, and two- and three-dimensionally woven composite plates subjected to transverse impact. All composite plates were made from glass/epoxy prepreg tape so direct comparisons could be made about the effects of through thickness reinforcement on perforation threshold. The effects of fiber angle were also studied. The laminated plates were made with stacking unidirectional plies together and had no additional through thickness reinforcement. The stitched plates were reinforced through the thickness with one-millimeter wide strips of prepreg. The two- and three-dimensional plates were hand woven using 12.7 mm wide strips of prepreg. The three-dimensional weaving technique was innovative in that it incorporated new fabric geometry to reinforce the plates through the thickness. A drop weight tester with an instrumented tup was used to impact the plates. The impact test results were used to determine the perforation thresholds. The three-dimensional woven plates had larger perforation threshold than the laminated and two-dimensional plates as well as reduced delamination area. The stitched plates had the largest perforation threshold. Through thickness reinforcement increased perforation threshold. The fiber angles of laminated and three-dimensional plates also influenced their perforation thresholds.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 10, 2004
- Accession Number
- ADA637000
Entities
People
- Basavaraju Raju
- Dahsin Liu
- Douglas Templeton
- George Coppens
Organizations
- Georgia Tech