Evaluation of Mechanical Properties of Kevlar Fibre Epoxy Composites: An Experimental Study

2018 ◽  
Vol 10 (6) ◽  
Author(s):  
R. Suthan ◽  
V. Jayakumar ◽  
S. Madhu
Keyword(s):  
Composite Material ◽  
Mechanical Characteristics ◽  
Flexural Rigidity ◽  
Epoxy Composite ◽  
Body Armor ◽  
Body Frame ◽  
Kevlar Fiber ◽  
Fiber Reinforced Polymer Composites ◽  
Bus Body ◽  
Manufacturing Applications

Kevlar fiber reinforced polymer composites are rapidly growing in manufacturing applications such bicycle tires and racing sails to body armor, bullet proof vests, military helmets, walking boots etc. Kevlar epoxy composite material using the Kevlar fiber and epoxy resin LY-556 was fabricated with manual hand layup procedure. The mechanical characteristics like tensile, impact strength and flexural rigidity were evaluated. With the results obtained it is found that kevlar epoxy composite provides better mechanical characteristics than aluminum. In this work, the possibility of replacing aluminum with Kevlar reinforced epoxy composite material is investigated for various applications viz. manufacturing of bus body frame, bullet proof vests, automobile body, sports applications, fire proof clothing, military helmets etc. Also, the FE analysis is carried out with MIDAS NFX software to correlate the test results with FEA.

scholarly journals Preliminary Investigation of a Flax-Epoxy Composite Material for Orthopaedic Applications

2021 ◽  
Author(s):  
Kamil Shami
Keyword(s):  
Composite Material ◽  
Mechanical Characteristics ◽  
Epoxy Composite ◽  
Preliminary Investigation ◽  
Analysis And Design ◽  
Bone Fixation ◽  
Testing Data ◽  
Manufacturing Testing ◽  
Proper Design ◽  
Sufficient Strength

In this dissertation, a preliminary experimental study was done on a flax-epoxy prepreg to determine its suitability as a composite material for making bone fixation plates. The research involved manufacturing, testing, data analysis, and design and optimizing. The material was found to have sufficient strength and mechanical characteristics similar to those of bone, and could be used for making bone fixation implants with proper design or in combination with other reinforcement fibres. The findings of this research are useful not only for using flax-epoxy composites in designing bone fixation plates but also for orthopaedic implants, such as joint replacement, in general.

scholarly journals Preliminary Investigation of a Flax-Epoxy Composite Material for Orthopaedic Applications

2021 ◽  
Author(s):  
Kamil Shami
Keyword(s):  
Composite Material ◽  
Mechanical Characteristics ◽  
Epoxy Composite ◽  
Preliminary Investigation ◽  
Analysis And Design ◽  
Bone Fixation ◽  
Testing Data ◽  
Manufacturing Testing ◽  
Proper Design ◽  
Sufficient Strength

In this dissertation, a preliminary experimental study was done on a flax-epoxy prepreg to determine its suitability as a composite material for making bone fixation plates. The research involved manufacturing, testing, data analysis, and design and optimizing. The material was found to have sufficient strength and mechanical characteristics similar to those of bone, and could be used for making bone fixation implants with proper design or in combination with other reinforcement fibres. The findings of this research are useful not only for using flax-epoxy composites in designing bone fixation plates but also for orthopaedic implants, such as joint replacement, in general.

Sound Insulation Characteristics of the Embedded and Co-Cured Composite Damping Structures

2012 ◽  
Vol 487 ◽  
pp. 598-602 ◽  
Author(s):  
Sen Liang ◽  
Zhong Sheng Zhang ◽  
Peng Mi
Keyword(s):  
Composite Material ◽  
Composite Laminates ◽  
Mechanical Characteristics ◽  
Epoxy Composite ◽  
Sound Insulation ◽  
Viscoelastic Damping ◽  
Wave Tube ◽  
Cure Cycle ◽  
Standing Wave Tube ◽  
Insulation Performance

Based on the designable mechanical characteristics of composite structure, a secondary vulcanization method of viscoelastic material is developed to manufacture the experimental specimens of embedded and co-cured composite damping structure (ECCDS). The mid-temperature co-cured process of the composite material embedding viscoelastic damping membrane is explored according to the glass fabric/epoxy composite cure cycle. By using a standing wave tube method, sound insulation performance of the composite damping structure is tested and compared with the composite laminates without the damping layer. The conclusion indicates that ECCDS has a very strong potential to insulate sound.

Promising hybrid fabrics based on carbon and aramid fibers as a reinforcing filler for polymer composites

2019 ◽  
pp. 86-95 ◽  
Author(s):  
G. F. Zhelezina ◽  
V. G. Bova ◽  
S. I. Voinov ◽  
A. Ch. Kan
Keyword(s):  
Composite Material ◽  
Polymer Composites ◽  
Carbon Fibers ◽  
Mechanical Characteristics ◽  
High Strength ◽  
High Modulus ◽  
Hybrid Composite Material ◽  
Hybrid Fabric ◽  
Reinforcing Filler ◽  
Physical And Mechanical Characteristics

The paper considers possibilities of using a hybrid fabric made of high-modulus carbon yarn brand ZhGV and high-strength aramid yarns brand Rusar-NT for polymer composites reinforcement. The results of studies of the physical and mechanical characteristics of hybrid composite material and values of the implementation of the strength and elasticity carbon fibers and aramid module for composite material are presented. 

Rupture by impact-induced fatigue of a copper foil strip embedded in a multifunctional composite material

2021 ◽  
pp. 002199832199432
Author(s):  
Yacine Ouroua ◽  
Said Abdi ◽  
Imene Bachirbey
Keyword(s):  
Composite Material ◽  
Mechanical Characteristics ◽  
Glass Fibers ◽  
Energy Levels ◽  
Fatigue Tests ◽  
Repeated Impact ◽  
Aeronautical Industry ◽  
Repeated Impacts ◽  
Cracking Mode ◽  
The Impact

Multifunctional composite materials are highly sought-after by the aerospace and aeronautical industry but their performance depends on their ability to sustain various forms of damages, in particular damages due to repeated impacts. In this work we studied the mechanical behavior of a layered glass-epoxy composite with copper inserts subjected to fatigue under repeated impacts with different energy levels. Damage evolution as a function of impact energy was carefully monitored in order to determine the effect of the copper inserts on mechanical characteristics of the multifunctional composite, such as endurance and life. Results of repeated impact tests show that electric current interruption in the copper inserts occurs prior to the total perforation of the composite material, and after about 75% of the total number of impacts to failure. This is the case for the three energy levels considered in this study, [Formula: see text] = 2, 3 and 4 Joules. The epoxy resin was dissolved chemically in order to preserve the mechanical structure of the damaged copper inserts and the composite fibers for further inspection and analysis. Scanning electron microscopy (SEM) of the fractured copper inserts revealed interesting information on the nature of the damage, including information on plastic deformation, strain hardening, cracking mode, temperature increase during the impacts, and most importantly the glass fibers and their roles during the impact-fatigue tests.

Preparation of epoxy composite material containing natural aluminosilicate filler

2011 ◽  
Vol 4 (4) ◽  
pp. 281-283 ◽  
Author(s):  
P. A. Sitnikov ◽  
A. V. Kuchin ◽  
A. G. Belykh ◽  
I. N. Vaseneva ◽  
Yu. I. Ryabkov
Keyword(s):  
Composite Material ◽  
Epoxy Composite ◽  
Natural Aluminosilicate

The Estimation of Thermal Conductivity for Alumina-Epoxy Composite Material with High Filling Volume Fraction

2014 ◽  
Vol 918 ◽  
pp. 21-26
Author(s):  
Chen Kang Huang ◽  
Yun Ching Leong
Keyword(s):  
Thermal Conductivity ◽  
Composite Material ◽  
Composite Materials ◽  
Physical Model ◽  
Electron Scattering ◽  
Volume Fraction ◽  
Epoxy Composite ◽  
The Matrix ◽  
Transport Theorem ◽  
Good Agreement

In this study, the transport theorem of phonons and electrons is utilized to create a model to predict the thermal conductivity of composite materials. By observing or assuming the dopant displacement in the matrix, a physical model between dopant and matrix can be built, and the composite material can be divided into several regions. In each region, the phonon or electron scattering caused by boundaries, impurities, or U-processes was taken into account to calculate the thermal conductivity. The model is then used to predict the composite thermal conductivity for several composite materials. It shows a pretty good agreement with previous studies in literatures. Based on the model, some discussions about dopant size and volume fraction are also made.

Electric Bus Body Lightweight Design Based on Multiple Constrains

2012 ◽  
Vol 538-541 ◽  
pp. 3137-3144 ◽  
Author(s):  
Wen Wei Wang ◽  
Cheng Jun Zhou ◽  
Cheng Lin ◽  
Jiao Yang Chen
Keyword(s):  
Finite Element ◽  
Lightweight Design ◽  
Element Model ◽  
The Body ◽  
Body Frame ◽  
Electric Bus ◽  
Free Model ◽  
Bus Body ◽  
The Finite Element Model ◽  
Torsion Condition

The finite-element model of pure electric bus has been built and the free model analysis, displacement and stress analysis under bending condition and torsion condition have been conducted. Optimally design the pure electric bus frame based on multiple constrains. Reduce the body frame quality by 4.3% and meanwhile meet the modal and stress requirements.

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