As fiber-reinforced polymer matrix composites are often cured from stress-free high temperature, when subjected to ambient temperature, both the mismatch of the coefficient of linear thermal expansion between the fiber and the matrix and the dependence of material properties on temperature will influence the interfacial behavior. Thus, it is necessary to provide an insight into the mechanism of temperature effects on the thermomechanical properties and behaviors along the interface. In this work, we conducted microbond tests of the glass fiber–epoxy material system at controlled testing temperature (Tt). A modified interface model is formulated and implemented to study the interfacial decohesion and frictional sliding behavior of microbond tests at different Tt. With proper cohesive parameters obtained, the model can predict temperature-dependent interfacial behaviors in fiber-reinforced composites. Both the slope of the peak force as well as the measured force at the stage of frictional sliding decrease with Tt in a wide range of the length of microdroplet-embedded fiber (le). The interfacial shear strength (IFSS) keeps almost constant at Tt ≤ 40 °C and decreases with le when temperature is above 40 °C. The average frictional stress (τfAverage) along the interface increases with le when temperature is below 80 °C but is almost constant when temperature is above or equal to 80 °C. Overall, in the same range of le, τfAverage is greater when Tt is at low temperature.
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September 2019
Research-Article
Temperature-Dependent Interfacial Debonding and Frictional Behavior of Fiber-Reinforced Polymer Composites
Qiyang Li,
Qiyang Li
State Key Laboratory of Fluid Power & Mechatronic System,
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
Department of Engineering Mechanics,
Hangzhou 310027,
e-mail: liqy999@zju.edu.cn
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
Department of Engineering Mechanics,
Zhejiang University
,Hangzhou 310027,
China
e-mail: liqy999@zju.edu.cn
Search for other works by this author on:
Guodong Nian,
Guodong Nian
1
State Key Laboratory of Fluid Power & Mechatronic System,
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Hangzhou 310027,
e-mail: gnian@zju.edu.cn
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Zhejiang University
,Hangzhou 310027,
China
e-mail: gnian@zju.edu.cn
1Corresponding authors.
Search for other works by this author on:
Weiming Tao,
Weiming Tao
State Key Laboratory of Fluid Power & Mechatronic System,
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Hangzhou 310027,
e-mail: Taowm@zju.edu.cn
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Zhejiang University
,Hangzhou 310027,
China
e-mail: Taowm@zju.edu.cn
Search for other works by this author on:
Shaoxing Qu
Shaoxing Qu
1
State Key Laboratory of Fluid Power & Mechatronic System,
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Hangzhou 310027,
e-mail: squ@zju.edu.cn
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Zhejiang University
,Hangzhou 310027,
China
e-mail: squ@zju.edu.cn
1Corresponding authors.
Search for other works by this author on:
Qiyang Li
State Key Laboratory of Fluid Power & Mechatronic System,
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
Department of Engineering Mechanics,
Hangzhou 310027,
e-mail: liqy999@zju.edu.cn
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
Department of Engineering Mechanics,
Zhejiang University
,Hangzhou 310027,
China
e-mail: liqy999@zju.edu.cn
Guodong Nian
State Key Laboratory of Fluid Power & Mechatronic System,
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Hangzhou 310027,
e-mail: gnian@zju.edu.cn
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Zhejiang University
,Hangzhou 310027,
China
e-mail: gnian@zju.edu.cn
Weiming Tao
State Key Laboratory of Fluid Power & Mechatronic System,
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Hangzhou 310027,
e-mail: Taowm@zju.edu.cn
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Zhejiang University
,Hangzhou 310027,
China
e-mail: Taowm@zju.edu.cn
Shaoxing Qu
State Key Laboratory of Fluid Power & Mechatronic System,
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Hangzhou 310027,
e-mail: squ@zju.edu.cn
Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province,
and Department of Engineering Mechanics,
Zhejiang University
,Hangzhou 310027,
China
e-mail: squ@zju.edu.cn
1Corresponding authors.
Contributed by the Applied Mechanics Division of ASME for publication in the Journal of Applied Mechanics. Manuscript received May 30, 2019; final manuscript received June 5, 2019; published online June 27, 2019. Assoc. Editor: Yonggang Huang.
J. Appl. Mech. Sep 2019, 86(9): 091010 (8 pages)
Published Online: June 27, 2019
Article history
Received:
May 30, 2019
Revision Received:
June 5, 2019
Accepted:
June 5, 2019
Citation
Li, Q., Nian, G., Tao, W., and Qu, S. (June 27, 2019). "Temperature-Dependent Interfacial Debonding and Frictional Behavior of Fiber-Reinforced Polymer Composites." ASME. J. Appl. Mech. September 2019; 86(9): 091010. https://doi.org/10.1115/1.4044017
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