Application of Composites in Orthotic Calipers and its Experimental Validations

2018 ◽  
Vol 877 ◽  
pp. 44-49
Author(s):  
Nisha Kumari ◽  
Kaushik Kumar
Keyword(s):  
Composite Material ◽  
Volume Ratio ◽  
High Strength ◽  
Human Gait ◽  
Carbon Cloth ◽  
Cad Tools ◽  
Environment Friendly ◽  
Lower Weight ◽  
Experimental Validations ◽  
Strength And Stiffness

Increasing population has led to numerous disabilities. One such disability which should be taken into account is related to human gait. Polio patients mainly suffer from this kind of disability due to which their muscles get weakened and they are unable to walk properly. The handicapped patients require an appliance with the help of which they can walk without any difficulties and the appliance acts as an aid for the correct positioning of their joints. Presently Aluminum Alloy based calipers are used but still the patients urge for better comfort. The requirement apart from more strength and stiffness, durability at lesser cost, environment friendly and light weight. Composite material is one such material which provides lower weight to volume ratio, high strength and stiffness at lesser cost. The purpose of the authors is to compare the mechanical properties of presently used aluminum calipers with polymeric thermoset based matrix (Carbon cloth with epoxy) based on CAD tools. The comparison reveals that thermoset based matrix will provide the maximum strength and firmness when compared to presently used Aluminum based calipers and model designed on CAD tools. Hence, the usage of the composite material will help the researchers design orthotic calipers which will have higher strength at a lower weight.

Lower Body Orthotic Calipers With Composite Braces

2018 ◽  
pp. 133-151
Author(s):  
Nisha Kumari ◽  
Kaushik Kumar
Keyword(s):  
Mechanical Properties ◽  
Surface Finish ◽  
Volume Ratio ◽  
Solid Modeling ◽  
Experimental Results ◽  
Lower Body ◽  
Corrosion Resistant ◽  
Lower Weight ◽  
Modeling Software ◽  
Strength And Stiffness

Composite based materials are finding application in a large number of research and engineering spectrum due to its better mechanical properties (strength and stiffness), inherent surface finish, easiness in fabrication and installation and corrosion resistant. They are very strong and firm, yet very light in weight due to which lower weight-to-volume ratio can be achieved and stiffness to weight is 1.5 times greater than the non-ferrous materials like Aluminum. The work is undertaken in two parts. First and foremost being modeling and virtual estimation of mechanical properties using CREO and ANSYS for currently used aluminum based calipers and fabrication of the composites and testing of the same. A comparison is performed between the virtual and experimental results and also the effectiveness of composite based calipers over Aluminum ones is studied. Here two polymeric based composites are proposed for fabrication which are thermoplast and thermoset based composites respectively. The braces are modeled using a solid modeling Software, CREO and the same is tested using ANSYS.

Development of Reinforced Structure Designed Composite Pavement

2014 ◽  
Vol 887-888 ◽  
pp. 793-796
Author(s):  
Zhong Ming Hou ◽  
Ling Duan ◽  
Kai Yao ◽  
Xiao Wen Zhao
Keyword(s):  
Composite Material ◽  
High Strength ◽  
Resin Matrix ◽  
Forming Process ◽  
Specific Strength ◽  
Road Pavement ◽  
Vacuum Forming ◽  
Resin Matrix Composite ◽  
Strength And Stiffness ◽  
Surface Plate

For the problems such as layering and splitting of traditional sandwich structure composite, a resin matrix composite with lattice and interface reinforced structure has been designed, and using vacuum forming process was developed in this paper. The composite material has high specific strength and stiffness. On this basis, a road pavement developed by this composite material used in engineer urgent was designed. This composite pavement with characters of light weight, high strength and good toughness, and its surface plate was hard, wear-resistant and non-slip. The connection between the pavements was designed for quick assembling, which could make the pavement assemble operation was simple, fast and reliable.

Efficacy of Composites for Fabrication of Orthotic Calipers

2017 ◽  
pp. 267-286
Author(s):  
Nisha Kumari ◽  
Kaushik Kumar
Keyword(s):  
Composite Materials ◽  
Low Cost ◽  
Volume Ratio ◽  
Research Field ◽  
Environment Friendly ◽  
Lower Weight ◽  
Low Weight ◽  
Alternative Material

Composites based materials are becoming more important in the field of aerospace, automobile, medicine, sports, energy etc. The principal quality of composite materials is their higher strength, firmness, resistant to corrosion and comparatively low weight when compared to the metals. The main aim of the work is to replace the presently used orthotic calipers with the proposed polymeric based composites as in last few years composites have generated broad research in engineering and research field due to its smaller density, low cost, recyclable, environment friendly and capable of being decomposed. Here, the authors have proposed two polymeric based composites (thermoplast and thermoset) as an alternative material of construction and hence their various properties were investigated. The authors after performing the experiment unveil that the strength and firmness of thermoset based composites (Epoxy + Carbon) is higher and have lower weight- to- volume ratio than that of the presently used (Aluminum based) orthotic calipers.

scholarly journals Mechanical Fatigue Test of Aluminium Composite Panel (ACP) with Aramid Nida-Core Under Cyclic Bending

2020 ◽  
Vol 70 (2) ◽  
pp. 1-10
Author(s):  
Ait Said Ahcene ◽  
Bey Kamel ◽  
Mzad Hocine
Keyword(s):  
Composite Material ◽  
Load Ratio ◽  
High Strength ◽  
Fatigue Behaviour ◽  
Optical Microscope ◽  
Composite Panel ◽  
Aluminium Composite ◽  
Mechanical Fatigue ◽  
Strength And Stiffness ◽  
Selection Of

AbstractThe selection of a composite material for any application will involve selection of reinforcing fibre and matrix, and their fractional volume in the resulting material. A properly selected combination will give a composite material high strength and stiffness, low weight, excellent fatigue and corrosion resistance. The present experimental work is a contribution to the study of the mechanical fatigue behaviour under 3-point bending stress, of aramid/aluminium composite panel with honeycomb core. The tests were performed on four specimens for three cyclic loadings (90%, 80% and 70%), and imposed deformation with a load ratio of 0.2 and a frequency of 5 Hz. The results show that the optimal load ensuring better service resistance of the experimented sandwich panel is 0.7 of the material elastic limit (720 N). Observation using optical microscope of fracture faces in static and cyclic flexion showed the different damage modes of skins and core.

REYNOLDS R-301

Alloy Digest ◽  
1954 ◽  
Vol 3 (5) ◽  
Keyword(s):  
Composite Material ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Strength ◽  
Heat Treating ◽  
Corrosion Resistant ◽  
Bearing Strength ◽  
High Strength Aluminum Alloy

Abstract Reynolds R301 is a composite material, constituted of a core of high strength aluminum alloy, clad with a corrosion-resistant aluminum alloy. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive, shear, and bearing strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Al-16. Producer or source: Reynolds Metals Company.

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. 

scholarly journals Investigation into the Structural, Chemical and High Mechanical Reforms in B4C with Graphene Composite Material Substitution for Potential Shielding Frame Applications

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1921
Author(s):  
Ibrahim M. Alarifi
Keyword(s):  
Composite Material ◽  
Melting Point ◽  
Boron Carbide ◽  
High Strength ◽  
Stir Casting ◽  
High Fracture Toughness ◽  
Chemical Compositions ◽  
High Fracture ◽  
Fabrication Procedure ◽  
Standard Designs

In this work, boron carbide and graphene nanoparticle composite material (B4C–G) was investigated using an experimental approach. The composite material prepared with the two-step stir casting method showed significant hardness and high melting point attributes. Scanning electron microscopy (SEM), along with energy dispersive X-ray spectroscopy (EDS) analysis, indicated 83.65%, 17.32%, and 97.00% of boron carbide + 0% graphene nanoparticles chemical compositions for the C-atom, Al-atom, and B4C in the compound studied, respectively. The physical properties of all samples’ B4C–G like density and melting point were 2.4 g/cm3 density and 2450 °C, respectively, while the grain size of B4C–G was in the range of 0.8 ± 0.2 µm. XRD, FTIR, and Raman spectroscopic analysis was also performed to investigate the chemical compositions of the B4C–G composite. The molding press composite machine was a fabrication procedure that resulted in the formation of outstanding materials by utilizing the sintering process, including heating and pressing the materials. For mechanical properties, high fracture toughness and tensile strength of B4C–G composites were analyzed according to ASTM standard designs. The detailed analysis has shown that with 6% graphene content in B4C, the composite material portrays a high strength of 134 MPa and outstanding hardness properties. Based on these findings, it is suggested that the composite materials studied exhibit novel features suitable for use in the application of shielding frames.

Development and Application of New Design Method by High-Strength Composite Material - Fusing of Optimum Strength Evaluation and Product Design

2013 ◽  
Vol 372 ◽  
pp. 17-20 ◽  
Author(s):  
Haruhiko Iida ◽  
Hidetoshi Sakamoto ◽  
Yoshifumi Ohbuchi
Keyword(s):  
Composite Material ◽  
Carbon Fiber ◽  
Product Design ◽  
Design Method ◽  
Target Material ◽  
High Strength ◽  
Fiber Glass ◽  
Strength Evaluation ◽  
Fiber Reinforced Materials ◽  
Manufacturing Methods

The purpose of this research is the development of new design method for integrating the optimum strength evaluation and the product design which can make the best use of material's characteristics obtained by the experiment and the analysis. Further we do design using high-strength composite material with this developed concept which is different from conventional design. First, to establish this design method of high-strength materials, we examined these materials characteristics and manufacturing methods and the commercialized products. As this research target material, we focus the fiber reinforced materials such as composite with carbon fiber, glass fiber and aramid fiber. Above all, we marked the carbon fiber which has the high specific tensile strength, wear resistance, heat conductivity and conductance. Here, we introduce the fundamental design concept which makes the best use of the design with enough strength.

scholarly journals Materials for Automotive Lightweighting

2019 ◽  
Vol 49 (1) ◽  
pp. 327-359 ◽  
Author(s):  
Alan Taub ◽  
Emmanuel De Moor ◽  
Alan Luo ◽  
David K. Matlock ◽  
John G. Speer ◽  
...  
Keyword(s):  
Galvanic Corrosion ◽  
Low Carbon Steel ◽  
High Strength Steels ◽  
High Strength ◽  
Low Carbon ◽  
New Materials ◽  
Specific Strength ◽  
Advanced High Strength Steels ◽  
Strength And Stiffness ◽  
The Cost

Reducing the weight of automobiles is a major contributor to increased fuel economy. The baseline materials for vehicle construction, low-carbon steel and cast iron, are being replaced by materials with higher specific strength and stiffness: advanced high-strength steels, aluminum, magnesium, and polymer composites. The key challenge is to reduce the cost of manufacturing structures with these new materials. Maximizing the weight reduction requires optimized designs utilizing multimaterials in various forms. This use of mixed materials presents additional challenges in joining and preventing galvanic corrosion.

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