Mechanization and Import Substitution in Zimbabwean Farmers' Equipment: A Case Study of the Revitalization of an Abandoned Tractor Trailer
Drill String Vibrational Analysis and Parametric Optimization for a Portable Water Well Rig Development
An Efficient Deep Neural Network with Amplifying Sine Unit for Nonlinear Oscillatory Systems
The Occupational Directness of Nanorobots in Medical Surgeries
Recent Trends in Solar Thermal Cooling Technologies
Design of Oil-Ammonia Separator for Refrigeration Systems
A Review on Mechanical and Tribological Characteristics of Hybrid Composites
Design and Experimental Investigation of a Natural Draft Improved Biomass Cookstove
Progressive Development of Various Production and Refining Process of Biodiesel
Optimization of Wire-ED Turning Process Parameters by Taguchi-Grey Relational Analysis
Evaluation Of Mechanical Behavior Of Al-Alloy/SiC Metal Matrix Composites With Respect To Their Constituents Using Taguchi Techniques
Multistage Extractive Desulfurization of Liquid Fuel by Ionic Liquids
Isomorphism Identification of Compound Kinematic Chain and Their Mechanism
Development of Electroplating Setup for Plating Abs Plastics
A Comprehensive Review of Biodiesel Application in IDI Engines with Property Improving Additives
This paper presents a statistical study of the erosion of material from the tool electrode in a micro-electrical discharge machining process. The work involves analysis of variance and analysis of means approaches on the results of the tool electrode wear rate obtained based on design of experiments approach. The input factors used in the experiments are discharge current (Id), discharge frequency (fp), and pulse width (wp). The individual effects as well as interactions among the input factors have been considered for the analysis. The results of this investigation show that discharge current (Id) and discharge frequency (fd) control the erosion of material from the tool electrode. The material erosion from the tool electrode (Me) increases linearly with the discharge frequency. As the current index increases from 20 to 35, the Me decreases linearly by e e 29%, and then increases by of 36%. The current index of 35 gives the minimum material erosion from the tool. It is observed that none of the two-factor interactions are significant in controlling the erosion of the material from the tool.
The selection of process parameters during hard turning is critical deciding the performance of hard turning. In this research work, an attempt has been made to analyze the influence of tool nose radius and workpiece hardness on cutting force and chip-tool interface temperature during hard turning of AISI 4340 steel. The experiments were performed as per layout design with the central composite design. The mathematical models of cutting force and chiptool interface temperature were developed using second order regression analysis. The adequacies of the developed models are analyzed by performing confirmation runs. The significance of the models and influence of the process parameters have been carried out based on Analysis of Variance (ANOVA) technique. The optimal values of the process parameters which provide maximum machining performance are predicted. The results show that workpiece hardness is the significant parameter which affects the performance of hard turning
In every automobile, i.e., four wheelers and heavy trucks, leaf spring is one of the main components as it provides a good suspension and plays a vital role in automobile application. In general, suspension systems are used to carry transverse loads to minimize vibrations and for better steering capability of the vehicle. In order to improve working of leaf spring, helping spring is used, i.e. progressive leaf spring. Modeling of progressive leaf spring is done in CATIA V5. This 3D model is imported to ANSYS and analysis is carried out. The strength and deflection of the progressive leaf spring under static loading conditions are determined. Also, Fatigue analysis and model analysis are carried out using ANSYS Workbench so that natural frequencies of the progressive leaf spring can be found. Generally, leaf springs of heavy vehicles are remade of material, EN47. Here, an attempt has been made to replace the EN47 steel leaf spring assembly with GFRP (Glass Fiber Reinforced Polymer) so that functioning can be improved.
In the recent years, the application of laminated composite materials is growing in all domains of engineering owing to its high strength and stiffness. Consequently, the quality of the fiber reinforced composite materials based on the tensile strength is considered for critical applications. To overcome these challenges, this paper proposed a technique to conduct a critical analysis of reinforced composite laminates. In this approach, laminates are produced using the process subsequently; the tensile strength test is performed for analysing the reinforced composite materials at 0o /90o and 45o angle orientation. The experimental results illustrate an increase in the number of layers that improves the strength to a greater extent. Moreover, fiber reinforced composite laminates with 0o /90o orientation of fibers exhibit o higher tensile strength properties when compared to the laminates with 45o orientation of fibers.
Since thirty years, composite materials are developing day-by-day as human beings are in need. Natural fiber reinforced polymer matrix composites are taking additional advantage in this modern technology as they are ecofriendly and readily available in nature. Natural fibers are advantageous as they are biodegradable in nature. Hybrid composites are combination of different reinforcement materials to the matrix combination, sometimes may be filler or fiber or both. Mechanical properties like tensile strength, impact strength, flexural strength, hardness, etc., are essential parameters to be considered for the selection of a good composite material. Other characters like tribological properties are to be taken into account as important factors in the selection of composite materials. This review paper includes the characterization of mechanical and tribological characteristics of different hybrid composites combinations. The main objective of this review is to select a compatible hybrid composite combination as per required application and requirements; like selection of glass fiber for different applications with compatible fillers, that too based on the mechanical and tribological factors. Different kinds of combinations are discussed based on different research citations and concluded based on which one shows good mechanical and tribological properties and such materials can be used for further research works.
