scholarly journals Optimization and Static Stress Analysis of Hybrid Fiber Reinforced Composite Leaf Spring

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Luay Muhammed Ali Ismaeel
Keyword(s):  
Hybrid Composites ◽  
Weight Ratio ◽  
High Strength ◽  
Leaf Spring ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Element Analysis ◽  
Shear Moduli ◽  
Good Convergence ◽  
Reinforced Composite

A monofiber reinforced composite leaf spring is proposed as an alternative to the typical steel one as it is characterized by high strength-to-weight ratio. Different reinforcing schemes are suggested to fabricate the leaf spring. The composite and the typical steel leaf springs are subjected to the same working conditions. A weight saving of about more than 60% can be achieved while maintaining the strength for the structures under consideration. The objective of the present study was to replace material for leaf spring. This study suggests various materials of hybrid fiber reinforced plastics (HFRP). Also the effects of shear moduli of the fibers, matrices, and the composites on the composites performance and responses are discussed. The results and behaviors of each are compared with each other and verified by comparison with analytical solution; a good convergence is found between them. The elastic properties of the hybrid composites are calculated using rules of mixtures and Halpin-Tsi equation through the software of MATLAB v-7. The problem is also analyzed by the technique of finite element analysis (FEA) through the software of ANSYS v-14. An element modeling was done for every leaf with eight-node 3D brick element (SOLID185 3D 8-Node Structural Solid).

scholarly journals Hybrid fiber-reinforced composite with carbon, glass, basalt, and para-aramid fibers for light use applications

2021 ◽  
Author(s):  
Jinwon Cho ◽  
Jaehyeung Park
Keyword(s):  
Carbon Fibers ◽  
Hybrid Composite ◽  
Mechanical Performance ◽  
Hybrid Composites ◽  
Glass Fibers ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Thermoplastic Matrix ◽  
Reinforced Composite ◽  
Carbon Fiber Reinforced Composites

Abstract This study explores the possibility of incorporating carbon fibers (CFs), basalt fibers, glass fibers, and p-aramid reinforcement fibers into carbon fiber–reinforced composites for light use applications. Hybrid composites can overcome the weakness of CFs and provide flexibility to design materials with the desired properties. The mechanical properties (tensile, flexural, and puncture impact properties) of the prepared hybrid composite were evaluated according to the standards ASTM D3039, ASTM D790, and ISO 6603-2, respectively. The inherent properties of reinforcement fibers, weaving density, and impregnation of a thermoplastic matrix into the composite considerably impact the mechanical performance of the hybrid composite materials.

scholarly journals Interfacial and Bending Properties by Adding HNTs on the Aramid/Basalt Reinforced Epoxy-Based Hybrid Composites

2017 ◽  
Author(s):  
Jin-Woo LEE ◽  
Tianyu Yu ◽  
Chang-Wook Park ◽  
Yun-Hae Kim
Keyword(s):  
Mechanical Properties ◽  
Bending Strength ◽  
Hybrid Composites ◽  
Basalt Fiber ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Reinforced Composite ◽  
External Impact ◽  
Laminar Fracture ◽  
Hybrid Properties

Hybrid fiber reinforced composites can be controlled by price, weight and various mechanical properties depending on fiber ratio and lamination method. Despite these excellent hybrid properties, there is a disadvantage that inter-laminar fracture due to external impact, which is the biggest weakness of fiber reinforced composite materials, is weak. The test specimens were prepared by using a vacuum bag method, which is manufactured by using an autoclave device. The pre-preg is manufactured in the form of a B-stage. In the process of fabricating the nanoparticle pre-preg, the homogeneizer using an ultrasonic wave was used to disperse the epoxy subject without the curing agent into nanoparticles. The dispersion of the nanoparticles was dispersed by the weight of the epoxy resin. This is to take into account the cohesion of HNT and to understand the range of cohesion of HNT in a matrix with viscosity and its phenomenon. According to the Comparison of the interlayer interfacial properties and mechanical properties of Aramid / Basalt fiber hybrid composites by HNT addition, the fracture toughness, ILSS and bending strength of specimens with HNT content of more than a certain level were decreased because of the aggregation of HNT.

Stress and Damage Analysis of Fiber-Reinforced Composite Pipe

2018 ◽  
Author(s):  
I. Ramos ◽  
Y. H. Park ◽  
J. Ulibarri-Sanchez
Keyword(s):  
Fatigue Behavior ◽  
Weight Ratio ◽  
High Strength ◽  
Pressure Vessels ◽  
Damage Analysis ◽  
Fiber Reinforced ◽  
Reinforced Composite ◽  
Structural Applications ◽  
Fuel Tanks ◽  
Failure Conditions

Composite materials are used in many environments due to their special properties such as high strength-to-weight ratio, corrosion resistance and the ability to be tailored to specific requirements. In particular, the use of fiber reinforced composites (FRCs) for pressure vessels/pipes has increased in structural applications such as fuel tanks, pipes, vessels, and rocket motor cases. Assessing failure conditions is important to ensure that these structures do not fail under their operating condition. In this study, an analytical procedure is developed to predict the fatigue behavior of FRC. A numerical model will also be developed and applied to failure analysis under internal pressure loading.

Performance Analysis of Composite Leaf Spring Using Computer Aided Engineering

2015 ◽  
Vol 787 ◽  
pp. 602-606
Author(s):  
S. Melvin Savio ◽  
D. Somasundaram ◽  
V. Vijaya Rajan
Keyword(s):  
Computer Aided Design ◽  
Strain Energy ◽  
Weight Ratio ◽  
High Strength ◽  
Leaf Spring ◽  
Element Analysis ◽  
Glass Fiber Reinforced Plastic ◽  
Conventional Steel ◽  
Computer Aided ◽  
Composite Glass

Automobile industries have shown more interest for the replacement of conventional steel leaf spring with that of the composite leaf spring due to its high strength to weight ratio. The objective of the work is to carry out computer aided design and analysis of composite (Glass fiber reinforced plastic) leaf spring and conventional steel leaf spring by considering certain parameters like stress, deflection and strain energy with similar design considerations and loading conditions. The material of the conventional leaf spring is 65Si7 and composite leaf spring is S2-Glass\Epoxy. The CAD model of the leaf spring is modeled in Pro-E and the numerical analysis is carried out using finite element analysis, ANSYS 14. Stress, deflection and strain energy results of both steel and composite leaf spring are obtained and compared. The result shows that the composite leaf spring has maximum strain energy than conventional steel leaf spring and weight of the composite leaf spring is nearly reduced up to 85% compared with steel material.

scholarly journals A survey of GFRP composite leaf spring

2014 ◽  
Vol 3 (2) ◽  
pp. 185 ◽  
Author(s):  
S. Rajesh ◽  
S. Nakkeran ◽  
GB. Bhaskar
Keyword(s):  
Composite Materials ◽  
Weight Reduction ◽  
Weight Ratio ◽  
Elastic Strain Energy ◽  
High Strength ◽  
Leaf Spring ◽  
Element Analysis ◽  
Glass Fiber Reinforced Plastic ◽  
Glass Fiber Reinforced ◽  
Selection Of

Although leaf springs are one of the oldest suspension components, they are still frequently used in the automobile vehicles. Weight reduction is the main focus in the automobile industries. Weight reduction can be achieved primarily by the introduction of better materials, design optimization, and better manufacturing processes. The achievement of weight reduction with adequate improvement of mechanical properties has made composite a very good replacement material for conventional steel. Selection of material is based on the cost and strength of material. The composite materials have more elastic strain energy, storage capacity and high strength to weight ratio compared to steel. This paper briefs about the research carried out for the part of three decades on design, analysis, and selection of material, experiments and fabrication of composite leaf spring. Keywords: Composite Leaf Spring, Composite Materials, Finite Element Analysis, Weight Reduction, Glass Fiber Reinforced Plastic (GFRP).

scholarly journals Study on Burr Formation and Tool Wear in Drilling CFRP and Its Hybrid Composites

2021 ◽  
Vol 11 (1) ◽  
pp. 384
Author(s):  
Jeong Hwan Lee ◽  
Jun Cong Ge ◽  
Jun Hee Song
Keyword(s):  
Tool Wear ◽  
Composite Laminates ◽  
Hybrid Composites ◽  
Weight Ratio ◽  
High Strength ◽  
Operating Conditions ◽  
Fiber Reinforced Polymer ◽  
Burr Formation ◽  
Fiber Reinforced ◽  
Reinforced Polymer

As contemporary emerging materials, fiber-reinforced plastics/polymers (FRP) are widely used in aerospace automotive industries and in other fields due to their high strength-to-weight ratio, high stiffness-to-weight ratio, high corrosion resistance, low thermal expansion and other properties. Drilling is the most frequently used process in industrial operation for polymer composite laminates, owing to the need for joining structures. However, it is a great challenge for operators to drill holes in FRP materials, due to the non-homogenous and anisotropic properties of fibers. Various damages, such as delamination, hole shrinkage, and burr and tool wear, occur due to the heterogeneous and anisotropic nature of composite laminates. Therefore, in this study, carbon fiber reinforced polymer (CFRP)/aramid fiber reinforced polymer (AFRP) hybrid composites (C-AFRP) were successfully synthesized, and their drilling characteristics, including burr generation and tool wear, were also mainly investigated. The drilling characteristics of CFRP and C-AFRP were compared and analyzed for the first time under the same operating conditions (cutting tool, spindle speed, feed rate). The experimental results demonstrated that C-AFRP had higher tensile strength and good drilling characteristics (low thrust and less tool wear) compared with CFRP. As a lightweight and high-strength structural material, C-AFRP hybrid composites have great potential applications in the automobile and aerospace industries after the slight processing of burrs generated during drilling.

Mathematical Model of the Effective Properties of a Fiber Reinforced Composite with a Linearly Graded Transition Zone

2010 ◽  
Vol 38 (4) ◽  
pp. 286-307
Author(s):  
Carey F. Childers
Keyword(s):  
Mathematical Model ◽  
Transition Zone ◽  
Effective Properties ◽  
Local Stress ◽  
Stress And Strain ◽  
Fiber Reinforced ◽  
Strain Fields ◽  
Shear Moduli ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite

Abstract Tires are fabricated using single ply fiber reinforced composite materials, which consist of a set of aligned stiff fibers of steel material embedded in a softer matrix of rubber material. The main goal is to develop a mathematical model to determine the local stress and strain fields for this isotropic fiber and matrix separated by a linearly graded transition zone. This model will then yield expressions for the internal stress and strain fields surrounding a single fiber. The fields will be obtained when radial, axial, and shear loads are applied. The composite is then homogenized to determine its effective mechanical properties—elastic moduli, Poisson ratios, and shear moduli. The model allows for analysis of how composites interact in order to design composites which gain full advantage of their properties.

Benefits of Using Diamond Dies for Cold Alternate Drawing of Magnesium Alloys

2016 ◽  
Vol 716 ◽  
pp. 13-21 ◽  
Author(s):  
Vladimir Stefanov Hristov ◽  
Kazunari Yoshida
Keyword(s):  
Magnesium Alloy ◽  
Weight Ratio ◽  
High Strength ◽  
Wire Drawing ◽  
High Ductility ◽  
Element Analysis ◽  
The Wire ◽  
Shearing Strain ◽  
Drawing Method

In recent years, due to its low density and high strength/weight ratio, magnesium alloy wires has been considered for application in many fields, such as welding, electronics, medical field (for production of stents). But for those purposes, we need to acquire wires with high strength and ductility. For that we purpose we proposed alternate drawing method, which is supposed to highly decrease the shearing strain near the surface of the wire after drawing, by changing the direction of the wire drawing with each pass and thus acquiring high ductility wires.We have done research on the cold alternate drawing of magnesium alloy wires, by conducting wire drawing of several magnesium wires and testing their strength, hardness, structure, surface and also finite element analysis, we have proven the increase of ductility at the expense of some strength.In this research we are looking to further improve the quality of the drawn wires by examining the benefits of using diamond dies over tungsten carbine dies. Using the alternate drawing method reduces the strength of the drawn wires and thus lowering their drawing limit. By using diamond dies we are aiming to decrease the drawing stress and further increase the drawing limit of the alternate drawn wires and also improve the quality of the finishing surface of the wires. With this in mind we are aiming to produce a good quality wire with low diameter, high ductility, high strength and fine wire surface.

Sign in / Sign up

Export Citation Format

Share Document