Publications

Mechanical Characterization of Woven Composites at Different Temperatures

Jin, Huiqing J.; Briggs, Timothy B.; Nissen, April E.; Nelson, Kevin N.

This work is to characterize the mechanical properties of the selected composites along both on- and off- fiber axes at the ambient loading condition (+25 o C), as well as at the cold (- 54 o C), and high temperatures (+71 o C). A series of tensile experiments were conducted at different material orientations of 0 o , 22.5 o, 45 o , 67.5 o , 90 o to measure the ultimate strength and strain f, f, and material engineering constants, including Young's modulus E, Poisson's ratio , The composite materials in this study were one carbon composite carbon (AS4C/UF3662) and one E-galss (E-glass/UF3662) composite. They both had the same resin of UF 3362, but with different fibers of carbon AS4C and E-glass. The mechanical loading in this study was limited to the quasi-static loading of 2 mm/min (1.3x10 ^(-3) in/s), which was equivalent to 5x10 (-4) strain rate. These experimental data of the mechanical properties of composites at different loading directions and temperatures were summarized and compared. These experimental results provided database for design engineers to optimize structures through ply angle modifications and for analysts to better predict the component performance.