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.

Tensile Test and Analysis of the Geometry of Kevlar/Epoxy Composites

2016 ◽  
Vol 368 ◽  
pp. 150-153
Author(s):  
Veronika Mušutová ◽  
Jan Mourek ◽  
Petr Tej
Keyword(s):  
Mechanical Properties ◽  
Tensile Test ◽  
Woven Fabric ◽  
Epoxy Composites ◽  
Cross Sectional ◽  
Plain Weave ◽  
Number Of Layers ◽  
Weave Fabric ◽  
Basic Parameters ◽  
The Cross

This paper is concerned with the analysis of geometric composites, whose reinforcement was made of plain weave fabric with different geometries. They were determined following the basic parameters of the textiles e.g. crimp length, crimp amplitude, thickness of the woven fabric, dimensions of the cross-sectional tow (tow width, tow height) and crimp angle. The number of fibers in the warp and tow strands and number of layers in the composites were also determined. These composites comprised of the same materials were subjected to a standard tensile test, according to DIN EN ISO 14 129. The mechanical properties of the composite as a whole were determined by tensile test.

Flame Retardation of Plain Weave Fabrics Made of Polyacrylonitrile Pre-Oxidized Yarns

2011 ◽  
Vol 175-176 ◽  
pp. 465-468 ◽  
Author(s):  
Lei Shi ◽  
Hua Wu Liu ◽  
Ping Xu ◽  
Dang Feng Zhao
Keyword(s):  
Mechanical Properties ◽  
Flame Retardant ◽  
Oxygen Index ◽  
Limiting Oxygen Index ◽  
Plain Weave ◽  
Weave Fabric ◽  
Short Period ◽  
Flame Retardation ◽  
Fabric Structures

Plain weave fabrics of polyacrylonitrile pre-oxidation yarns (PANOF) were prepared by small rapier loom. The flame retardation properties, mechanical properties and wear behaviors of PANOF plain weave fabrics were tested. The limiting oxygen index (LOI) of these PANOF plain weave fabric samples was 31%, which meets the criterion of flame-retardant fabrics. These fabrics neither melt nor shrunk when left in flame for a short period of time and the fabric structures were well maintained. Compared with flammable polyacrylonitrile fabrics, the polyacrylonitrile pre-oxidation fabrics exhibited excellent flame retardation properties, with satisfactory mechanical properties and comfortable handle.

A general micromechanical model to predict elastic and strength properties of balanced plain weave fabric composites

2017 ◽  
Vol 51 (20) ◽  
pp. 2863-2878 ◽  
Author(s):  
MM Shokrieh ◽  
R Ghasemi ◽  
R Mosalmani
Keyword(s):  
Mechanical Properties ◽  
Mechanical Behavior ◽  
Elastic Properties ◽  
Present Model ◽  
Micromechanical Model ◽  
Homogenization Method ◽  
Plain Weave ◽  
Weave Fabric ◽  
Fabric Composites ◽  
Out Of Plane

In the present research, a micromechanical-analytical model was developed to predict the elastic properties and strength of balanced plain weave fabric composites. In this way, a new homogenization method has been developed by using a laminate analogy method for the balanced plain weave fabric composites. The proposed homogenization method is a multi-scale homogenization procedure. This model divides the representative volume element to several sub-elements, in a way that the combination of the sub-elements can be considered as a laminated composite. To determine the mechanical properties of laminates, instead of using an iso-strain assumption, the assumptions of constant in-plane strains and constant out-of-plane stress have been considered. The applied assumptions improve the accuracy of prediction of mechanical properties of balanced plain weave fabrics composites, especially the out-of-plane elastic properties. Also, the stress analysis for prediction of strain–stress behavior and strength has been implemented in a similar manner. In addition, the nonlinear mechanical behavior of balanced plain weave composite is studied by considering the inelastic mechanical behavior of its polymeric matrix. To assess the accuracy of the present model, the results were compared with available results in the literature. The results, including of engineering constants (elastic modulus and Poisson’s ratio) and stress–strain behavior show the accuracy of the present model.

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

scholarly journals New Micromechanical Model for Predicting Biaxial Tensile Moduli of Plain Weave Fabric Composites

2016 ◽  
Author(s):  
Jiangbo Bai ◽  
Junjiang Xiong ◽  
Qiang Wang
Keyword(s):  
Biaxial Loading ◽  
Micromechanical Model ◽  
Tensile Tests ◽  
Woven Fabric ◽  
Curved Beams ◽  
Energy Principle ◽  
New Model ◽  
Plain Weave ◽  
Biaxial Tensile ◽  
Weave Fabric

This paper addresses a new micromechanical model to predict biaxial tensile moduli of plain weave fabric (PWF) composites by considering the interaction between the orthogonal interlacing strands. The two orthogonal yarns in micromechanical unit cell (UC) were idealized as the curved beams with a path depicted by using sinusoidal shape functions. The biaxial tensile moduli of PWF composites were derived by means of the minimum total complementary potential energy principle founded on micromechanics. The biaxial tensile tests were respectively conducted on the RTM-made EW220/5284 PWF composites at five biaxial loading ratios of 0, 1, 2, 3 and ∞ to validate the new model. The predictions from the new model were compared with experimental data and good correlation was achieved between the predictions and actual experiments, demonstrating the practical and effective use of the proposed model. Using the new model, the biaxial tensile moduli of plain weave fabric (PWF) composites could be predicted based only on the properties of basic woven fabric.

Strength Anisotropy Estimation of Plain-Weave Fabrics by Pseudo-Continuum Model

2006 ◽  
Vol 306-308 ◽  
pp. 835-840 ◽  
Author(s):  
Osamu Kuwazuru ◽  
Nobuhiro Yoshikawa
Keyword(s):  
Finite Element ◽  
Tensile Strength ◽  
Deformation Behavior ◽  
Continuum Model ◽  
Uniaxial Extension ◽  
Woven Fabric ◽  
Plain Weave ◽  
Weave Fabric ◽  
The Continuum ◽  
The Ideal

The anisotropy of the tensile strength of plain-weave fabric is numerically evaluated by the finite element simulations. The plain-weave fabrics show complicated deformation behavior that is quite different from that of the continuum. The mechanics of woven fabric is not sophisticated yet enough to evaluate the strength and fracture mechanism in arbitrary stress conditions. The opacity of the tensile strength significantly diminishes the material reliability for the advanced use of fabrics. This study addresses the ideal tensile strength in arbitrary directions by using the pseudo-continuum model, which we have proposed to predict the deformation behavior and fiber stresses of the plain-weave fabrics. In this study, the numerical simulations of uniaxial extension in various directions are carried out by one finite element subjected to ideally uniform deformation, and we predict the breaking loads and elongations corresponding to the ultimate strength of the fiber.

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