Impact and High Strain Rate Response of 3-D Woven Systems
Abstract
3-D and 2-D woven systems were characterized both statically and dynamically to assess the relative advantages of 3-D weaves in armor and impact resistant systems. Five different 3WeaveTM 3-D orthogonal fabrics were woven from S-2 glass rovings, including both flat goods and near-net-shape preforms. 3WeaveTM and a baseline, 2-D woven fabric were consolidated via vacuum assisted resin transfer molding using rubber toughened epoxy vinyl ester and rubber-toughened epoxy. Static mechanical properties, including mode 1 critical strain energy release rate, were determined. Composites were tested in drop tower impact, for visible damage area and compression strength after impact. Composites were tested in through-thickness compression in Hopkinson bar tests at strain rates ranging from 500-1200/s. Composites were used to back aluminum plates, and tested against fragment simulating projectiles in non- perforating ballistic impact, to determine visible damage area. Finally, prototype body armor inserts were developed, using alumina ceramics, which 3-D woven backings enabled the design to meet NlJ 0101.04 level 3 standalone requirements at an article weight of 8.1 lbs, while similar weight backings made from the 2-D fabric could not meet the NlJ requirements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 17, 2001
- Accession Number
- ADA388847
Entities
People
- B. A. Gama
- J. N. Singletary
- J. W. Gillespie Jr.
- R. La. Coffelt