کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7889336 | 1509859 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Realizing the theoretical stiffness of graphene in composites through confinement between carbon fibers
ترجمه فارسی عنوان
درک سختی نظرانه گرافن در کامپوزیت ها از طریق محصور کردن بین الیاف کربن
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
It is shown that approximately 2â¯wt% of graphene in the matrix of a unidirectionally-reinforced carbon fiber epoxy composite leads to a significant enhancement in mechanical properties. Particularly, it is found that the axial stiffness of the composites is increased by â¼10â¯GPa accompanied by an increase in axial strength of 200â¯MPa. X-ray computed tomography and polarized Raman spectroscopy have demonstrated that the graphene is predominately aligned parallel to the carbon fibers axes. Stress-induced Raman band shifts showed that the confined and self-aligned graphene is subjected to high levels of stress during axial deformation of the composite, with an effective Young's modulus of â¼825â¯GPa, approaching its theoretical value of 1050â¯GPa. This behavior has been modeled using the rule of mixtures and shear-lag analysis and it is demonstrated that highly-aligned graphene in a constrained environment between fibers gives significantly better mechanical reinforcement than graphene in conventional polymer-based nanocomposites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 113, October 2018, Pages 311-317
Journal: Composites Part A: Applied Science and Manufacturing - Volume 113, October 2018, Pages 311-317
نویسندگان
Jingwen Chu, Robert J. Young, Thomas J.A. Slater, Timothy L. Burnett, Broderick Coburn, Ludovic Chichignoud, Aurèle Vuilleumier, Zheling Li,