Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1466550 | Composites Part A: Applied Science and Manufacturing | 2011 | 14 Pages |
Abstract
The flexural response of 3D woven textile composite panels containing an edge crack is evaluated using the End Notch Flexure (ENF) test. In doing so, the effectiveness of 3D reinforcement in increasing and/or eliminating delamination is demonstrated. Two types of textile architectures, referred to as Z-fiber reinforcement and a layer-to-layer architecture were examined. At quasi-static and low rate; 0.01Â mm/Section (0.0004Â in/s) and 50.8Â mm/Section (2Â in/s), results showed that the Z-fiber reinforcement provided a higher strength, although the layer-to-layer reinforcement provided more energy absorption and prevented mode II crack propagation, thus providing insight into eliminating the delamination mode of failure. At higher loading rates, using an instrumented drop tower at impactor velocities of 2.79Â m/Section (110Â in/s) and 3.96Â m/Section (156Â in/s), results suggested a rate dependent mode II strength of the material. Computational models to further explore the experimental results are presented in a follow-on paper in this issue of the journal [1].
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
M. Pankow, A. Salvi, A.M. Waas, C.F. Yen, S. Ghiorse,