scholarly journals Transverse failure of carbon fiber composites: Analytical sensitivity to the distribution of fiber/matrix interface properties

2019 ◽  
Vol 120 (5) ◽  
pp. 650-665 ◽  
Author(s):  
Maryam Shakiba ◽  
David R. Brandyberry ◽  
Scott Zacek ◽  
Philippe H. Geubelle
Keyword(s):  
Carbon Fiber ◽  
Fiber Composites ◽  
Carbon Fiber Composites ◽  
Analytical Sensitivity ◽  
Interface Properties ◽  
Matrix Interface ◽  
Fiber Matrix Interface ◽  
Fiber Matrix ◽  
Transverse Failure

Fiber/matrix interface stress analysis of flax-fiber composites under transverse loading considering material nonlinearity

2020 ◽  
Vol 39 (9-10) ◽  
pp. 345-360
Author(s):  
Baris Sabuncuoglu ◽  
Onur Cakmakci ◽  
Fevzi S Kadioglu
Keyword(s):  
Fiber Composites ◽  
Flax Fiber ◽  
Material Nonlinearity ◽  
Transverse Strain ◽  
Matrix Interface ◽  
Transverse Loading ◽  
Stress Concentrations ◽  
Transverse Cracks ◽  
Fiber Matrix Interface ◽  
Fiber Matrix

Distribution of stresses in fiber/matrix interface in UD flax fiber reinforced composites is investigated under transverse loading and compared with conventional synthetic fibers. Micro-scale finite element models with representative volume elements are generated with various fiber packing types and fiber volume ratios. The study is performed for various strain values, which take into account the material nonlinearity of matrix. The results show that significantly lower stress concentrations exist in the case of flax fibers compared to glass fiber composites, explaining the absence of transverse cracks until failure in previously conducted transverse tension tests. Increase in the applied transverse strain causes a further decrease in the stress concentrations due to the nonlinear behavior of the matrix.

XPS study of the carbon fiber matrix interface

Carbon ◽  
1990 ◽  
Vol 28 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Youichi Nakayama ◽  
Fusami Soeda ◽  
Akira Ishitani
Keyword(s):  
Carbon Fiber ◽  
Matrix Interface ◽  
Fiber Matrix Interface ◽  
Fiber Matrix ◽  
Xps Study

Effects of Thermal Cycling on Properties of Carbon Fiber/Aluminum Composites

1988 ◽  
Vol 110 (2) ◽  
pp. 89-95 ◽  
Author(s):  
Tetsuyuki Kyono ◽  
Etsuro Kuroda ◽  
Atsushi Kitamura ◽  
Tsutomu Mori ◽  
Minoru Taya
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Thermal Cycling ◽  
Degradation Mechanism ◽  
Matrix Interface ◽  
Aluminum Composites ◽  
Longitudinal Tensile Strength ◽  
Casting Technique ◽  
Fiber Matrix Interface ◽  
Fiber Matrix

Effects of thermal cycling on mechanical properties such as longitudinal tensile strength, interlaminar shear strength and work of fracture of carbon fiber/aluminum composites have been investigated. The composite specimens fabricated by a squeeze casting technique were thermally cycled in fluidized baths between room temperature and various temperatures (250, 300, and 350° C) for up to 1000 cycles. The cross sections and fracture surfaces were examined to clarify the degradation mechanism. Significant degradation of the mechanical properties by thermal cycling was observed in untreated carbon fiber/aluminum composites whereas much less degradation in surface treated carbon fiber/aluminum composites. Microscopic observations and short beam shear tests have indicated that the degradation of mechanical properties is caused by debonding at the fiber/matrix interface. The fiber/matrix interface for surface treated fiber was more resistant to debonding. It is concluded that thermal cycling damage of carbon fiber/aluminum composites can be minimized by increasing their fiber/matrix bond strengths.

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