Chin. Phys. Lett.  2010, Vol. 27 Issue (8): 086201    DOI: 10.1088/0256-307X/27/8/086201
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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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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.

Keywords: 62.20.Mm      81.05.Lg     
Received: 26 May 2010      Published: 28 July 2010
PACS:  62.20.mm (Fracture)  
  81.05.Lg (Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/27/8/086201       OR      https://cpl.iphy.ac.cn/Y2010/V27/I8/086201
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RONG Ji-Li
WANG Xi
CAO Mao-Sheng
XU Tian-Fu
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