Prediction of the tensile strength of unidirectional carbon fiber composites considering the interfacial shear strength

2017 ◽  
Vol 168 ◽  
pp. 92-103 ◽  
Author(s):  
Wonjin Na ◽  
Geunsung Lee ◽  
Minchang Sung ◽  
Heung Nam Han ◽  
Woong-Ryeol Yu
Keyword(s):  
Tensile Strength ◽  
Shear Strength ◽  
Carbon Fiber ◽  
Interfacial Shear Strength ◽  
Fiber Composites ◽  
Interfacial Shear ◽  
Carbon Fiber Composites

Effect of Zinc Oxide Nanowire Length on Interfacial Strength of Carbon Fiber Composites

2013 ◽  
Author(s):  
Brendan A. Patterson ◽  
Henry A. Sodano
Keyword(s):  
Zinc Oxide ◽  
Shear Strength ◽  
Carbon Fiber ◽  
Interfacial Shear Strength ◽  
Interfacial Strength ◽  
Fiber Composites ◽  
Interfacial Shear ◽  
Zno Nanowires ◽  
Oxide Nanowires ◽  
Vertically Aligned

Vertically aligned arrays of zinc oxide nanowires can serve as an adjustable interface for fiber composites through controllable synthesis techniques. When grown on carbon fiber surfaces as a fiber-matrix interphase of a composite, ZnO nanowires increase the surface area of interaction between fiber and matrix, and thus cause a greater interfacial shear strength of the composite. The ability to control the interfacial strength of this interphase through tailored morphologies enables the design of composite systems to specific applications. This report focuses on the controlled growth of ZnO nanowires and correlates the relationship between nanowire length and interfacial shear strength of the composite. Previous studies have focused on the effects of nanowire morphology on the interfacial strength; however, the data was limited to nanowire lengths < 1μm due to problems with nanowire uniformity and cleanliness [1]. Here, a new synthesis method is applied to the growth of zinc oxide nanowires on carbon fiber that enables the production of long, vertically aligned, uniform nanowires while maintaining the tensile properties of the fiber. The nanowires created by the new method are then compared to previous method nanowires by scanning electron microscopy imaging. Lastly, the interfacial shear strength of the fiber/polymer matrix composite is tested using single fiber fragmentation and correlated to the nanowire length of each method.

Reliability Evaluation of Interfacial Shear Strength on Single Carbon-Fiber/Rubber-Modified Epoxy Resin System

2005 ◽  
Vol 297-300 ◽  
pp. 1784-1789
Author(s):  
Deok Bo Lee ◽  
Tae Won Kim ◽  
Uoo Chang Chung
Keyword(s):  
Shear Strength ◽  
Carbon Fiber ◽  
Epoxy Resin ◽  
Interfacial Shear Strength ◽  
Interfacial Shear ◽  
Carbon Fiber Composites ◽  
Resin System ◽  
Pull Out ◽  
Epoxy Resin System ◽  
Modified Epoxy

Rubber-modified epoxy resins are used as a matrix material for glass and carbon-fiber composites. Mechanical properties of fiber reinforced composites depend on the interfacial shear strength between the reinforced fiber and the matrix resin. This study is focused on the interfacial shear strength in the reinforced carbon fiber and rubber-modified epoxy resin system. To evaluate interfacial shear strength between the fiber and the resin, pull-out test is performed using a microdroplet method. Based on experimental results, numerical analysis was also simulated. It is concluded that the interfacial shear strength of carbon fiber/unmodified epoxy resin system was higher than that of carbon fiber/modified epoxy resin system. The reason for decreased the interfacial shear strength of rubber-modified system is that contractive forces in neat epoxy resin acting on carbon fiber were less than those in rubber-modified epoxy resin system.

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