Interfacial shear strength and fracture toughness between single carbon fiber and TiO2 matrix under microbond test

2019 ◽  
pp. 1-19
Author(s):  
Chaoyong Li ◽  
Rongtao Zhu ◽  
Pengfei Huang ◽  
Xian Wang
Keyword(s):  
Fracture Toughness ◽  
Shear Strength ◽  
Carbon Fiber ◽  
Interfacial Shear Strength ◽  
Interfacial Shear ◽  
Microbond Test ◽  
Tio2 Matrix

Improved interfacial shear strength of carbon fiber/polyphenylene sulfide composites by graphene

2016 ◽  
Vol 29 (8) ◽  
pp. 913-921 ◽  
Author(s):  
Junyi Xu ◽  
Dongxia Xu ◽  
Xiaojun Wang ◽  
Shengru Long ◽  
Jie Yang
Keyword(s):  
Shear Strength ◽  
Carbon Fiber ◽  
Interfacial Shear Strength ◽  
Interfacial Properties ◽  
Interfacial Shear ◽  
Polyphenylene Sulfide ◽  
Mechanical Interlocking ◽  
Reinforced Plastic ◽  
Microbond Test ◽  
Micrometer Size

By taking advantage of the micrometer size dimensions and excellent mechanical properties along with the large specific surface area of graphene (GN) sheet, we developed a simple and effective strategy to improve the interfacial properties of carbon fiber (CF)-reinforced plastic. Different contents of GN dispersed in the agent were introduced onto the surface of CF to prepare the CF-GN/polyphenylene sulfide composites. The surface topography and the distribution of GN sheets on the surface of CF were detected by scanning electron microscopy. It was found that the introduction of GN significantly increased the surface roughness of CF, which was beneficial to enhance mechanical interlocking between the fiber and matrix. The microbond test showed that there was the most appropriate GN content, at which the composites exhibited the highest interfacial shear strength (IFSS). An improvement of 20% from 55.2 MPa to 66.2 MPa in IFSS confirmed the remarkable improvement in the interfacial properties of the composites when only 0.5 wt% of GN sheets was introduced in the agent sizing.

scholarly journals Evaluation of Interfacial Fracture Toughness and Interfacial Shear Strength of Typha Spp. Fiber/Polymer Composite by Double Shear Test Method

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2225 ◽  
Author(s):  
Ikramullah ◽  
Samsul Rizal ◽  
Yoshikazu Nakai ◽  
Daiki Shiozawa ◽  
H.P.S. Abdul Khalil ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Shear Strength ◽  
Interfacial Shear Strength ◽  
Epoxy Composite ◽  
Interfacial Fracture ◽  
Interfacial Shear ◽  
Composite Model ◽  
Interfacial Fracture Toughness ◽  
Double Shear ◽  
The Matrix

The aim of this paper is to evaluate the Mode II interfacial fracture toughness and interfacial shear strength of Typha spp. fiber/PLLA and Typha spp. fiber/epoxy composite by using a double shear stress method with 3 fibers model composite. The surface condition of the fiber and crack propagation at the interface between the fiber and the matrix are observed by scanning electron microscope (SEM). Alkali treatment on Typha spp. fiber can make the fiber surface coarser, thus increasing the value of interfacial fracture toughness and interfacial shear strength. Typha spp. fiber/epoxy has a higher interfacial fracture value than that of Typha spp. fiber/PLLA. Interfacial fracture toughness on Typha spp. fiber/PLLA and Typha spp. fiber/epoxy composite model specimens were influenced by the matrix length, fiber spacing, fiber diameter and bonding area. Furthermore, the interfacial fracture toughness and the interfacial fracture shear stress of the composite model increased with the increasing duration of the surface treatment.

Effect of Water Temperature on Interfacial Shear Strength of Resin Particles Added CFRTP

2018 ◽  
Vol 774 ◽  
pp. 7-12
Author(s):  
Hideaki Katogi ◽  
Kenichi Takemura ◽  
Mao Mochizuki
Keyword(s):  
Shear Strength ◽  
Carbon Fiber ◽  
Water Temperature ◽  
Room Temperature ◽  
Interfacial Shear Strength ◽  
Water Immersion ◽  
Interfacial Shear ◽  
Water Penetration ◽  
Resin Particle ◽  
Particle Addition

In this study, interfacial shear strength of resin particles added carbon fiber/maleic acid anhydride grafted polypropylene under water temperature was investigated. Water temperature range was from room temperature to 80 oC. The maximum immersion time was 24 hours. Micro debonding tests of non and resin particles added composites were conducted. Fracture surface of resin particles added composite were observed by Scanning Electron Microscope (SEM). As a result, interfacial shear strengths of non particles added composite monotonously decreased with an increase of water temperature. Interfacial shear strength of resin particles added composite was higher than that of non resin particles added composite under all water temperatures except for 50 oC. From SEM observation, large resin particles on surface of carbon fiber after water immersion at 50 oC were found. And, many matrices and large resin particles on surface of carbon fiber after water immersion at 80 oC were found. Therefore, interfacial shear strength of composite was improved because resin particle addition prevented water penetration into the interface between fiber and matrix under water immersion less than 50 oC. And, interfacial shear strength of composite was probably improved by anchor effect of resin particle under water immersion at 80 oC.

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