Journal of Mechanical and Mechanics Engineering (e-ISSN: 2581-3722)

Hydrothermal Analysis of Squeezing Fluid Suspended by Hybrid Nanoparticles with Motile Gyrotactic Microorganisms

Rehan Ali Shah, Hamid Ali — Mon, 18 Sep 2023 00:00:00 +0530

The current work aims to analyze the mass diffusion between two parallel infinite plates with heat and flow transfer of hybrid nanoparticles with motile gyro tactic bacteria suspended by magnetohydrodynamic incompressible flow. The fluid is made up of water and Ethylene glycol in equal amounts. Hybrid nanoparticles MoS₂and Fe₃O₄ are being used for evaluation. The Mathematical model has been developed from the Navier Stokes equations along with energy and Micro-organisms. The set of Ordinary differential equations has been derived through appropriate similarity variables. A homogenous magnetic field has a considerable influence on metallic particles. The squeezed fluid flow of gyrotactic microorganisms is highlighted. The data presents graphical representations of many physical properties, such as velocity, the Nusselt number, skin friction, microorganisms’ temperature distribution, and the volume percentage of nanoparticles. The velocity, temperature, and concentration profiles changes in the current study system of differential equations given in equations (11-14) together with the boundary conditions specified in equation (17) is numerically solved using the Parametric Continuation Method (PCM), and the BVP4C package is used to compare the results for validation. Effects of biconvection, heat transmission, Brownian motion, Schmidt number, squeeze number, and heat source were all investigated.

Numerical and Experimental Investigation of PVD Coating on Drilling Performance of Inconel 825 Alloy

Jakeer Hussain Shaik, Saideep K, Raghava Raju T — Mon, 30 Oct 2023 00:00:00 +0530

Inconel 825 is a nickel-based superalloy that presents significant difficulties throughout the drilling process because of its material qualities, operating circumstances, and stringent quality standards. Because of its poor thermal conductivity, heat builds up around the tool's tip and is trapped there, leading to premature wear. This research looks at how a high-tech PVD coating affects a drill's efficiency while working with Inconel 825, a nickel-based superalloy. Forces and torque are modelled for various cutting conditions and projected. Drilling performance is compared between coated and uncoated carbide tools methodically by using an analytical model, simulation, and tests to account for surface roughness, thrust force, and torque. Coated tools have been proven to need less force and torque than their uncoated counterparts. Cutting faster using a PVD-coated tool improved the surface quality. Constraints on the free flow of the chip during drilling lead the chip to thicken. The findings reveal that the chip resistance force is less when the tool is coated.

Finite Element Analysis of Composite Material-Based Leaf Spring using ANSYS Software

Rajesh Kumar Gupta, Vikash Dwivedi — Wed, 20 Sep 2023 00:00:00 +0530

Fiber-reinforced polymeric composites are widely used in a variety of technical industries, including automotive, aviation, military, and marine. Utilising composite materials to reduce weight without sacrificing material strength is necessary to reduce fuel consumption and CO2 emissions, especially in the automotive industry. Traditional steel leaf springs are components that greatly impact car weight while also providing ride comfort and vehicle stability. As a result, Fibre reinforced polymeric composites with several remarkable qualities such as high wear resistance high strength; long fatigue life, corrosion resistance, and low density are suitable materials for these applications. Three distinct composite-based mono-leaf springs were designed and analyzed in this thesis. The investigations revealed that the 0° unidirectional glass Fibre system did not provide the desired spring rate properly. As a result, alternate combinations of glass and carbon hybrid systems were investigated. The research showed that the [0°6G/0°2C/0°22G] S material configuration produced the desired spring rate. When the outcomes were compared to the FEA results, it was found that they agreed.

Design and Analysis of Dissimilar Materials by Friction Stir Welding

Tue, 31 Oct 2023 00:00:00 +0530

In a solid-state welding procedure known as FSW (Friction Stir Welding), the workpieces are rotated or moved about one another until the compressive pressures contract, causing the welds to form. Different specimens must be joined together by heat, which is produced at the interface via friction. With a wear-resistant welding tool, heat is generated by friction between the shoulder and the pin. The benefits of friction stir welding come from the fact that it is a special type of weld that doesn't require consumables or special shielding element procedures. The final weld is attractive and flawless.

The goal of this work is to gain a greater understanding of FSW, investigate thermal stresses, and determine temperature distribution using finite element simulation and Abaqus, a program used for both modeling and analyzing mechanical parts. Here, a modeling and simulation approach to examine the characteristics and compatibility of various materials has been done. Thus, when friction stirs welding, the combination of nickel and stainless steel material produces better results than the combination of aluminium and copper material. Additionally, the average heat flux generated by the combination of nickel and stainless steel material is lower than that of the two metals together.

Manufacturing of a New Prosthetic Socket by Direct Method

Esraa A. Abbod — Thu, 19 Oct 2023 00:00:00 +0530

The conventional techniques employed in the production of industrial sockets consume a significant amount of time. Consequently, modern approaches have been adopted to prioritize rapid socket manufacturing, although they entail higher expenses. In this study, cost-effective materials were utilized to implement the direct method. The tensile test results for samples crafted from fibreglass composite materials demonstrated a favourable outcome when compared to those made from carbon fibre composites using the direct method. Furthermore, the fatigue test results suggest that cost-effective materials can be effectively utilized by relying on the direct method.

However, it's important to note that the majority of amputations are trans-tibial. In this research, below-knee sockets were manufactured using a swift production process, with a working time not exceeding two hours. This technique, known as the direct method, involves the direct lamination of four carbon layers onto the patient's residual limb. The mechanical characteristics were examined and contrasted with those of the traditional manufacturing method, which is widely employed globally but typically takes weeks. This traditional technique is called Vacuum Molding Technique, and it employs six layers of fibreglass.