کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1414671 | 1508894 | 2013 | 9 صفحه PDF | دانلود رایگان |
The stress distribution at the various parts of PAN-based carbon fiber (CF) monofilament has been estimated using a complex mechanical model on the basis of the quantitative evaluation of crystallite modulus through the micro-beam wide-angle X-ray diffraction measurement under tension as well as the micro-Raman spectral measurement under tension. When a CF monofilament was tensioned along the fiber axis, the outer-surface part of nanometer-order depth was found to owe a tensile stress about 1.5 times higher than the inner-surface and core parts, indicating an easier start of fiber breakage from the outer surface part. This knowledge gives us an important hint to the development of mechanically-tough carbon fiber without any such local stress concentration on the outer surface part.
Journal: Carbon - Volume 53, March 2013, Pages 29–37