Joh, Han-Ik Song, Hae Kyung Kim, Ki-Young Ku, Bon-Cheol Kang, Phil-Hyun Lee, Sungho 2024-01-20T11:02:33Z 2024-01-20T11:02:33Z 2021-09-04 2013-12 1738-8228 https://pubs.kist.re.kr/handle/201004/127408 In this study, mechanical properties of commercial carbon fibers were evaluated using a single filament tensile test with various fiber gauge lengths. Tensile strength increased significantly with a decreasing length of the test specimens possibly due to small defect sites. The compliance method provided more accurate moduli of the carbon fibers, removing system errors during the single filament tensile test. The Weibull modulus revealed that shorter specimens had an inhomogeneous defect distribution, leading to a higher tensile strength and its standard deviation. X-ray diffractograms of carbon fibers showed a similar crystallinity and orientation in spite of significant differences in the fiber modulus and strength, indicating that crystalline structure of the commercial carbon fibers used in the study was not attributable to the difference in their tensile properties. Korean KOREAN INST METALS MATERIALS SURFACE Mechanical Properties of Commercial Carbon Fibers Using a Single Filament Tensile Test Article 10.3365/KJMM.2013.51.12.913 1 KOREAN JOURNAL OF METALS AND MATERIALS, v.51, no.12, pp.913 - 920 KOREAN JOURNAL OF METALS AND MATERIALS 51 12 913 920 scie scopus kci ART001825790 000328726500009 2-s2.0-84892186846 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article SURFACE carbon and graphite fibers tensile test scanning electron microscopy X-ray diffraction