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Experimental investigation on the essential work of mixed-mode fracture of PC/ABS alloy

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Abstract

The mixed-mode fracture of polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) alloy is experimentally investigated in this work. The essential work of fracture method is employed to measure the mixed-mode fracture toughness of PC/ABS alloy. Results show that the essential fracture work w e increases significantly with the decrease in loading angles. Crack initiation angles are measured on the fractured specimens. The deviation of crack growth direction from the initial crack plane also increases with the decrease in loading angles, which corresponds to the increase of shear components. Microfracture processes of PC/ABS alloy with different loading angles are examined in situ by a scanning electron microscope. Crazing structures are clearly seen around the crack tip. The appearance, growth, and coalescence of crazes can be observed in the microfracture processes, and the macrocrack propagation direction is finally determined by the coalesced direction of crazes.

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Authors and Affiliations

  1. State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Department of Engineering Mechanics, Xi’an Jiaotong University, Xi’an, 710049, China

    Huimin Li, Qinzhi Fang & Tiejun Wang

  2. Xi’an Thermal Power Research Institute Co., Ltd., Xi’an, 710032, China

    Guiping Jiang

Authors
  1. Huimin Li
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  2. Guiping Jiang
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  3. Qinzhi Fang
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  4. Tiejun Wang
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Corresponding author

Correspondence to Tiejun Wang.

Additional information

This paper was presented at the FEOFS 2013, Jeju, Korea, June 9–13, 2013. Recommended by Guest Editor Jung-Il Song

Huimin Li received her Ph.D. from the Department of Engineering Mechanics in 2008 at Xi’an Jiaotong University in China. Currently, she is an Engineer in the State Key Laboratory for Strength and Vibration of Mechanical Structures at Xi’an Jiaotong University. Her research interests are fatigue and fracture mechanics.

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Li, H., Jiang, G., Fang, Q. et al. Experimental investigation on the essential work of mixed-mode fracture of PC/ABS alloy. J Mech Sci Technol 29, 33–38 (2015). https://doi.org/10.1007/s12206-014-1205-0

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  • DOI: https://doi.org/10.1007/s12206-014-1205-0

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