Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781723039188
Total Pages : 116 pages
Book Rating : 4.0/5 (391 download)
Book Synopsis Effects of Fiber, Matrix, and Interphase on Carbon Fiber Composite Compression Strength by : National Aeronautics and Space Administration (NASA)
Download or read book Effects of Fiber, Matrix, and Interphase on Carbon Fiber Composite Compression Strength written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The major goal of this project was to obtain basic information on compression failure properties of carbon fiber composites. To do this, we investigated fiber effects, matrix effects, and fiber/matrix interface effects. Using each of nine fiber types, we prepared embedded single-fiber specimens, single-ply specimens, and full laminates. From the single-fiber specimens, in addition to the standard fragmentation test analysis, we were able to use the low crack density data to provide information about the distribution of fiber flaws. The single-ply specimens provided evidence of a correlation between the size of kink band zones and the quality of the interface. Results of the laminate compression experiments mostly agreed with the results from single-ply experiments, although the ultimate compression strengths of laminates were higher. Generally, these experiments showed a strong effect of interfacial properties. Matrix effects were examined using laminates subjected to precracking under mixed-mode loading conditions. A large effect of precracking conditions on the mode 1 toughness of the laminates was found. In order to control the properties of the fiber/matrix interface, we prepared composites of carbon fiber and polycarbonate and subjected these to annealing. The changes in interfacial properties directly correlated with changes in compression strength. Nairn, John A. and Harper, Sheila I. and Bascom, Willard D. Unspecified Center CARBON FIBERS; COMPRESSIVE STRENGTH; FAILURE; FIBER COMPOSITES; FIBER-MATRIX INTERFACES; LAMINATES; SOLID-SOLID INTERFACES; ANNEALING; COMPRESSION TESTS; DELAMINATING; POLYCARBONATES; TOUGHNESS...