3/11/2024 0 Comments Carbon fibre filamentGuigon and Oberlin (1986) showed that the crystallites in the surface region of PAN-based fibers were much larger than those in the center of the fibers. Sawada and Shindo (1981) also found the radial gradient of density being lower in the inner region. (1977) (on Torayca T300 and two fibers with higher strength), and Sawada and Shindo (1981) (on Torayca T300 and Hercules HMS) found that there was a modulus gradient exhibiting a higher modulus in the outer skin region. Some CFs exhibit a profound skin-core difference, with more highly oriented and larger crystallites in the skin region, and less oriented and smaller crystallites in the core.ĭiefendorf and Tokarsky (1975), Chen and Diefendorf (1872) (on Hercules HMS and HMU), Morita et al. Within a carbon fiber filament there is a property or structure gradient across the radius of the filament. SHINDO, in Comprehensive Composite Materials, 2000 1.01.3.4 Radial Heterogeneity
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