| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Dynamic Fracture Toughness and Failure Mechanisms of ZnO Whiskers Secondary Reinforced Composites |
RONG Ji-Li, WANG Xi1, CAO Mao-Sheng2, XU Tian-Fu1 |
| 1School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081 2School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081 |
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| Cite this article: |
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RONG Ji-Li, WANG Xi, CAO Mao-Sheng et al 2010 Chin. Phys. Lett. 27 086201 |
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Abstract Quasi-static and dynamic fracture properties and damage mechanism of glass fiber polymer composites embedded with different mass percentages of ZnO whiskers are investigated by using an Instron Testing machine and a Split-Hopkinson pressure bar. According to the experimental results and linear fracture mechanics, the quasi-static fracture toughness KIc and the dynamic fracture toughness KId under various impact velocities of specimens are obtained. Fracture mechanism is investigated by fractography analysis with a scanning electron microscope. The experimental results show that the mass percentage of ZnOw has little influence on the quasi-static fracture toughness, but a little influence on the dynamic fracture toughness and time of initial fracture point of specimens by the reason of various fracture mechanisms.
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| Keywords:
62.20.Mm
81.05.Lg
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Received: 26 May 2010
Published: 28 July 2010
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| PACS: |
62.20.mm
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(Fracture)
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81.05.Lg
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(Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials)
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