Stress dependence of indentation modulus for carbon fiber in polymer composite
| Autor: | Masamichi Kawai, Kenta Goto, Dai-Ming Tang, Hiroaki Mamiya, Hongxin Wang, Ikumu Watanabe, Daisuke Fujita, Hideaki Kitazawa, Han Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
lcsh:Biotechnology Stress dependence Modulus 02 engineering and technology 010402 general chemistry 01 natural sciences Stress (mechanics) Atomic force microscopy 10 Engineering and Structural materials lcsh:TP248.13-248.65 Indentation lcsh:TA401-492 104 Carbon and related materials General Materials Science Composite material Elastic modulus 500 Characterization 021001 nanoscience & nanotechnology 0104 chemical sciences indentation Polymer composites lcsh:Materials of engineering and construction. Mechanics of materials Engineering and Structural materials 0210 nano-technology |
| Zdroj: | Science and Technology of Advanced Materials Science and Technology of Advanced Materials, Vol 20, Iss 1, Pp 412-420 (2019) |
| ISSN: | 1468-6996 |
| Popis: | Elastic modulus measured through atomic force microscopy (AFM)-based indentation on single carbon fiber (CF) is found with dependence on lateral applied stress. An in situ indentation experiment inside a high-resolution transmission electron microscope was performed to quantitatively understand this phenomenon by observing microstructure change in the indented area. Change of graphitic basal plane misalignment angle during indentation was linked to a continuous change of modulus with the help of finite element simulation. The established relationship between modulus and indentation force was further used to calculate residual stress distribution in CF imbedded in a CF reinforced polymer composite using the AFM indentation technique. The stress-induced formation of nanoscale defects in the CF and their transformation into fracture were directly characterized. GRAPHICAL ABSTRACT |
| Databáze: | OpenAIRE |
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