Planar Porous Graphene Woven Fabric/Epoxy Composites with Exceptional Electrical, Mechanical Properties, and Fracture Toughness

2015 ◽  
Vol 7 (38) ◽  
pp. 21455-21464 ◽  
Author(s):  
Xu Liu ◽  
Xinying Sun ◽  
Zhenyu Wang ◽  
Xi Shen ◽  
Ying Wu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Woven Fabric ◽  
Epoxy Composites ◽  
Porous Graphene

Effect of toughened polyamide-coated carbon fiber fabric on the mechanical performance and fracture toughness of CFRP

2021 ◽  
pp. 002199832199945
Author(s):  
Jong H Eun ◽  
Bo K Choi ◽  
Sun M Sung ◽  
Min S Kim ◽  
Joon S Lee
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Photoelectron Spectroscopy ◽  
Mechanical Performance ◽  
Epoxy Composites ◽  
Scanning Calorimetry ◽  
Internal Damage ◽  
Impact Tests ◽  
Flexural Tests ◽  
The Impact

In this study, carbon/epoxy composites were manufactured by coating with a polyamide at different weight percentages (5 wt.%, 10 wt.%, 15 wt.%, and 20 wt.%) to improve their impact resistance and fracture toughness. The chemical reaction between the polyamide and epoxy resin were examined by fourier transform infrared spectroscopy, differential scanning calorimetry and X-ray photoelectron spectroscopy. The mechanical properties and fracture toughness of the carbon/epoxy composites were analyzed. The mechanical properties of the carbon/epoxy composites, such as transverse flexural tests, longitudinal flexural tests, and impact tests, were investigated. After the impact tests, an ultrasonic C-scan was performed to reveal the internal damage area. The interlaminar fracture toughness of the carbon/epoxy composites was measured using a mode I test. The critical energy release rates were increased by 77% compared to the virgin carbon/epoxy composites. The surface morphology of the fractured surface was observed. The toughening mechanism of the carbon/epoxy composites was suggested based on the confirmed experimental data.

Effect of Moulding Temperature on Flexure, Impact Strength and Interlaminar Fracture Toughness of CF/PEI Composite

1996 ◽  
Vol 15 (11) ◽  
pp. 1117-1130 ◽  
Author(s):  
Meng Hou ◽  
Lin Ye ◽  
Yiu-Wing Mai
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Impact Strength ◽  
Woven Fabric ◽  
Mode I ◽  
Mode Ii ◽  
Void Content ◽  
Processing Conditions ◽  
Interlaminar Fracture ◽  
Fracture Growth

The effects of processing conditions on the mechanical properties of a CF/PEI woven fabric composite have been investigated. A compression moulding procedure using a hot press was applied to simulate the effects of various processing conditions. The mechanical properties of the CF/PEI composite were characterised by flexure, impact strength and interlaminar fracture tests in relation to the consolidation quality. Consolidation quality was studied through void content and density measurement. The results indicated that the consolidation quality of the composites was highly dependent on the processing temperature. The flexure properties. Mode I and Mode II fracture toughness for crack initiation and Mode II interlaminar fracture growth resistance correlated directly with consolidation quality. However, the Charpy impact strength and Mode I interlaminar fracture growth resistance both increased as the void content was increased because of a “multiple-crack” failure mechanism.

scholarly journals Mechanical properties of aerospace epoxy composites reinforced with 2D nano-fillers: current status and road to industrialization

2021 ◽  
Author(s):  
Radhika Wazalwar ◽  
Megha Sahu ◽  
Ashok M. Raichur
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Fracture Toughness ◽  
High Performance ◽  
Aerospace Industry ◽  
Epoxy Composites ◽  
Current Status ◽  
High Performance Polymer

Epoxy composites find application in the aerospace industry. Although epoxy is a high-performance polymer, its fracture toughness is compromised due to its highly cross-linked nature. Nanomaterials such as carbon nanotubes...

Tensile and Flexural Strength of Untreated Woven Henequen-Glass Fabric Reinforced Epoxy Hybrid Composites

2014 ◽  
Vol 600 ◽  
pp. 569-575
Author(s):  
Ángel Marroquín de Jesús ◽  
Juan Manuel Olivares Ramírez ◽  
José Luis Reyes-Araiza ◽  
Alejandro Manzano-Ramirez ◽  
Luis Miguel Apatiga Castro ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composites ◽  
Woven Fabric ◽  
Epoxy Composites ◽  
Flexural Properties ◽  
Stacking Sequence ◽  
Matrix Interface ◽  
Number Of Layers ◽  
Mechanical Anchoring ◽  
Fiber Matrix Interface

The use of eco-friendly composites has gained attraction due to its lightweight and moderate strength in recent years. The aim of this paper was to study the influence of the stacking sequence of glass and henequen fabrics on the mechanical properties of epoxy composites. Fiber/Matrix interface adhesion was examined using SEM. It was observed how the tensile and flexural properties of the hybrid reinforced epoxy laminates with henequen and glass fabrics, increase as the number of layers of henequen woven fabric decrease while stacking sequence does not have a great effect on the tensile properties. However, when ten layers of henequen fabric were used, a eco-friendly composite material with good mechanical strength was obtained due to the mechanical anchoring of the henequen fabric with the epoxy resin. Hence, it is clearly shown how by tailoring the geometry of the fabric, improvements in the mechanical properties of eco-friendly polymer composites can be achieved.

scholarly journals 2D woven/ 3D orthogonal Woven Non-crimp E-glass Fabric as Reinforcement in Epoxy Composites using Vacuum Assisted Resin Infusion Molding

2017 ◽  
Vol 12 (2) ◽  
pp. 155892501701200 ◽  
Author(s):  
Suhas Yeshwant Nayak ◽  
Srinivas Shenoy Heckadka ◽  
Ramakrishna Vikas Sadanand ◽  
Kapil Bharadwaj ◽  
Harsh Mukut Pokharna ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Woven Fabric ◽  
Epoxy Composites ◽  
Fracture Mechanisms ◽  
Resin Infusion ◽  
Plain Weave ◽  
Morphological Studies ◽  
Weave Fabric ◽  
3D Orthogonal Woven ◽  
Laminar Shear

E-glass/Epoxy composites were fabricated using Vacuum Assisted Resin Infusion Moulding (VARIM) in fiber weight fractions of 40%, 45%, 50% and 55 percent. E-glass fiber in the form of 2D plain woven fabric of 320 gsm and 3D orthogonal woven non-crimp fabric with 1830 gsm were considered for reinforcement. Mechanical properties including tensile strength, flexural strength, impact strength and inter-laminar shear strength (ILSS) of both the composites were evaluated and compared to explore the possibility of 3D fabric as an alternative over the plain weave fabric. Improvement in mechanical properties was seen with increase in fiber content in both the composites. Results support the view that 3D orthogonal weave fabric can be used in lieu of plain weave fabric as it exhibited improved mechanical properties. Morphological studies were used to analyze the fracture mechanisms.

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