Addressing Bioprinting Challenges in Tissue Engineering
Synthesis of Zinc Oxide Nanoflower using Egg Shell Membrane as Template
In Vitro and in Vivo Experiment of Antibacterial Silver Nanoparticle-Functionalized Bone Grafting Replacements
Biocompatibility in Orthopedic Implants: Advancements and Challenges
Contemporary Approaches towards Emerging Visual Prosthesis Technologies
An Investigation on Recent Trends in Metamaterial Types and its Applications
A Review on Plasma Ion Nitriding (PIN) Process
A Review on Friction and Wear Behaviors of Brake’s Friction Materials
Comparative Parabolic Rate Constant and Coating Properties of Nickel, Cobalt, Iron and Metal Oxide Based Coating: A Review
Electro-Chemical Discharge Machining- A review and Case study
Electrical Properties of Nanocomposite Polymer Gels based on PMMA-DMA/DMC-LiCLO2 -SiO2
Comparison Of Composite Proton Conducting Polymer Gel Electrolytes Containing Weak Aromatic Acids
Enhancement in Electrical Properties of PEO Based Nano-Composite Gel Electrolytes
Effect of Donor Number of Plasticizers on Conductivity of Polymer Electrolytes Containing NH4F
PMMA Based Polymer Gel Electrolyte Containing LiCF3SO3
Composite materials have advancements in many structural applications. This paper explains the design philosophy involved in composite structures. The various methods used to design have been discussed here. Conventional and composite materials show a wider variation, on considering corrosion resistance and part complexity. Composite materials always have a superior design complexity. All these analytics pave way for Materials selection for the road design and in the production of Hot Mix Asphalt (HMA). Thus the paper reviewed that the manufacturing methods can be changed in order to supersede the existing product design.
In the present research work, mechanical tensile properties of Acrylonitrile Butadiene Styrene (ABS), Polyketone (PK), Polypropylene (PP), and Acrylic have been evaluated at low strain rate loading (0.1s-1, 0.01s-1 and 0.001s-1). Sigma Mixing (SM) and Injection Molding (IM) techniques have been used to fabricate dog bone shaped specimens of these polymers. Effect of different fabrication techniques on tensile behaviour of these four polymers has been evaluated. Young's modulus of all polymers is enhanced significantly when specimens are fabricated by Sigma mixing technique. A noticeable improvement of 22.7%, 11.6%, 41%, and 45% in the Young's modulus of ABS, PK, PP, and Acrylic fabricated by Sigma mixing has been observed in comparison to Injection moulded specimens. Molecular orientation, better homogeneity, and strong binding of molecules could be the reasons for this improvement in Young's modulus of specimens fabricated by sigma mixing. This low cost fabrication technology (Sigma mixing) with higher production rate and improved mechanical properties will make this research work more applicable for the fabrication of automotive parts, protective headgear, engineering plastics, electronic assemblies, and other mechanical devices.
Industrial designers are always in search of new tools that can create a product more technically and artistically. Conventional Computer-aided Design (CCAD) supports only creation, modification, analysis, and optimization of design. Worthwhile CCAD is not much supportive in the artistic activities associated with the conceptual design phase of the product design. For conceptual design, the designer requires freedom to modify the product specifications frequently to study the product behavior regarding attributes like product shape, strength, deformation, surface roughness, ergonomics, and many other aspects. The present research is made to investigate the deformation of the product using a virtual model of Plasticine material. The virtual product model is generated from point cloud data. The deformable Volumetric Self-organizing Feature Map (VSOFM) is used as an adaptive geometric modeling tool. VSOFM provides a framework for generating objects that dynamically change shape during the design process. To assign the material properties, the point cloud data meshes with B-spline incorporated with spring and dampers. The collision is detected between the tool and the B-spline based teardrop model. Deforming force is applied to the Plasticine model to check the mode of deformation. It is concluded that B-spline based Plasticine model exhibits material properties more efficiently and accurately during collision detection and deformation.
Material processing with microwave is an emerging concept in advance manufacturing, which is getting world wide acceptance due to high energy efficiency, reduced processing time, instant heating, and improved mechanical properties. This paper describes the processing of natural and synthetic fibre reinforced composites using microwave heating and compares the result with similar composites cured by traditional heating. Moulds made of different materials were used to suit microwave and traditional heating. This paper also discusses various tests conducted to compare the mechanical properties of natural fibre reinforced composites made through traditional and microwave curing. Microwave heating shows superior mechanical properties than conventional heating methods.
This paper discusses Electrochemical Discharge Machining (ECDM), which is a non-conventional process used in fabricating micro features, preferably on non-conducting materials. The role of mixed electrolyte in ECDM used by previous researchers along with its various concentrations have been discussed. The effect of process parameters like voltage and electrolyte concentration on Material Removal Rate (MRR) have been analysed along with its optimization; utilizing statistical tools like Analysis of Variance (ANOVA). Through the experimental results, it was observed that the MRR increased with an increase in electrolyte concentration up to a certain level and decreased with an increase in the stand-off distance. MRR increased with an increase in voltage up to certain stage of potential. The comparison is drawn between the effects of hollow and solid tools on MRR. The overall MRR is more for mixed electrolyte as compared to single electrolytes. The effect of tool size on MRR has also been discussed in the paper.
This paper reviews all coating techniques, including Chemical Vapour Deposition (CVD), Physical Vapour Deposition (PVD), Magnetron Sputtering, and Ion Beam Assisted Deposition used for the coating on the working surface of dies used in glass manufacturing industry. Coatings used with these techniques were single layer coatings of nitrides, borides, and oxides, multilayer coatings of nitride or carbides and noble metal like Platinum-Iridium (Pt-Ir) coatings. During glass manufacturing, dies are subjected to high temperature ranges from 900 °C to 1150 °C. The characteristics of coatings like wettability, wear and corrosion resistance against thermal cycling at high temperature are important factors for die manufacturing materials. Problems related to these characteristics have been elaborated in detail which reflects the behaviour of coatings particularly used for dies, and their effects have been studied. Oxide scale formation on the working surface and coatings due to high temperature corrosion is also a burning issue and it has been explained in this review paper. Among the various coatings, Pt-Ir coatings are the best in terms of performance. However, these noble metals are costlier than other materials which have been used for coatings. Further the different coatings for high temperature corrosion applications have been taken into consideration to know the effective results associated with their use and the materials that have provided the protection to the working surfaces at high temperatures. It has been found that the coating process, its parameters and selection of material directly affect the surface properties at high temperatures and it is proposed that the use of new coating techniques, such as microwave cladding and thermal spray coating with a number of variants in their processes and feedstocks can effectively modify the surface properties of die materials.