husain mehdi | Meerut Institute of Technology, Meerut (original) (raw)

Papers by husain mehdi

The composite material has a very wide area of research and it is attracting the interest to rese... more The composite material has a very wide area of research and it is attracting the interest to researchers, engineers and scientists due to its superior mechanical and physical properties like light weight, low density, high specific strength, low cost, and better mechanical properties. It has found wide application in automobile, aerospace and sporting industries. This work focused on study the mechanical properties of natural composite using theoretical and experimental verification. The theoretical models used are series and parallel, Halpin-Tsai, Modified Halpin-Tsai and Hirsch model for evaluation of tensile strength and tensile modulus. Experimental characterization was carried out as per ASTM D638 type-I by universal testing machine. The theoretical value of tensile strength and tensile modulus were compared with experimental results. It was found that the increase in the fiber volume fraction, increase the tensile strength, the maximum tensile strength was found 44 MPa for jut...

https://www.irjet.net/archives/V4/i11/IRJET-V4I1194.pdf

A comprehensive numerical simulation of fluid dynamics based study of a pleated wing section base... more A comprehensive numerical simulation of fluid dynamics based study of a pleated wing section based on the wing of Aeshna Cyanea has been performed at ultra-low Reynolds number corresponding to the gliding flight of these dragonflies in order to explore the potential applications of pleated airfoils for micro air vehicle applications. The simulation employs an unstructured triangular mesh based on finite volume discretization done in the ANSYS-14.0 using WorkBench14.0.Whenever, dragonfly wing interacts with the fluid (air taken), several forces and vibrations results out. These forces and vibrations cause certain changes over the dimensional structure over the wing and also influence the flows characteristics. A critical assessment of the computed results was performed. In this work, various flow patterns and aerodynamic performance of pleated airfoil has been obtained at ultra-low Reynolds numbers (2000-3000) at different angle of attacks (AOA) ranging from 0 0 to15 0. Also there effects on coefficient of Lift and Drag have been analysed. The simulations demonstrate that pleated airfoil produces higher lift and moderate drag that lead to an aerodynamic performance and hence pleated airfoil is an excellent choice for a fixed wing micro-air vehicle application.

In order to utilize the hybrid structure and reduce the cost and weight of the components, the us... more In order to utilize the hybrid structure and reduce the cost and weight of the components, the use of dissimilar metals is increasing day by day in most of the industries. Such metals are widely used in defense, aviation, automobile industries and power transmission sector as combination of these metals gives excellent mechanical properties such as high resistance to corrosion, high strength to weight ratio etc. Dissimilar materials of carbon steel SA-508Gr3 and stainless steel type SS304 L are widely used in nuclear power plants, petrochemicals, where the weldment are usually subjected to hot corrosion. This work deals with the assessment of mechanical properties of these bimetallic joints obtained by gas tungsten arc welding using SS308L and SS309L filler material. Hardness and tensile test were conducted to measure the micro hardness and tensile properties. The maximum hardness 37.5 and 27.5 were found in the weld joint for buttering and without buttering respectively, whereas ultimate tensile strength was found 547.67 MPa for buttering.

Friction stir welding (FSW) is a relatively new solid state joining process that uses a non-consu... more Friction stir welding (FSW) is a relatively new solid state joining process that uses a non-consumable tool to join two different material without melting the workpiece material. Heat is generated by friction between the rotating tool and the workpiece material. This joining process is energy efficient, environment friendly and versatile. Friction stir welding (FSW) was developed for microstructural modification of metallic material. This review article provides an overview of effect of FSW/FSP mechanism responsible for the formation of weld, microstructure refinement, wear of FSW tool and mechanical properties. This review conclude with recommendations for future research direction.

Purpose: Friction stir welding (FSW) is a relatively new solid state joining process that uses a ... more Purpose: Friction stir welding (FSW) is a relatively new solid state joining process that uses a non-consumable tool to join two different material without melting the workpiece material. Friction stir welding (FSW) was developed for microstructural modification of metallic material. This review article provides an overview of effect of FSW/FSP mechanism responsible for the formation of weld, microstructure refinement, wear of FSW tool and mechanical properties. This review conclude with recommendations for future research direction. Design/methodology/approach: Heat is generated by friction between the rotating tool and the workpiece material. This joining process is energy efficient, environment friendly and versatile.

The performance of an aircraft wing mostly depend on the aerodynamic characteristics i.e. lift fo... more The performance of an aircraft wing mostly depend on the aerodynamic characteristics i.e. lift force, drag force, pressure distribution, ratio of lift to drag etc. In this paper the influence of aerodynamic performance on two dimensional NACA 4412 airfoil is investigated. The computational method consist of steady state, incompressible, finite volume method, spalart-allmaras turbulence model. The flow has been studied with the help of Navier-Stroke and continuity equations. Numerical simulations were performing at Reynolds number (1x10 6 , 2x10 6 , 3x10 6 , and 4x10 6) at different angle of attack (0 0 , 3 0 , 6 0 , and 9 0). The results give the satisfactory measure of confidence of fidelity of the simulation. Aerodynamic forces are calculated with different Reynolds number and angle of attack, after analyzing the data it is found that the higher lift coefficient was obtain in Re-4x10 6 at angle of attack 9 0 whereas low drag coefficient was obtain in Re-1x10 6 at AOA-0 0

Alloy beams and beam like elements are principal constituents of many structures and widely used ... more Alloy beams and beam like elements are principal constituents of many structures and widely used in high speed machinery, aircraft and light weight structures. Crack is a damage that often occurs on members of structures and may cause serious failures of structures. In this research the natural frequency of a cracked cantilever beam is investigated by finite element method by using of ANSYS program with different crack depth and location effect. The beam material studied is aluminum alloy, titanium alloy, copper alloy and magnesium alloy. A comparison is made between these alloys and conclude optimized result between them. The increase of the beam length result in a decrease in the natural frequencies of the composite beam and also shows that an increase of the depth of cracks lead to a decrease in the value of natural frequencies.

Aluminium alloys are widely used in automotive industries. This is particularly due to the real n... more Aluminium alloys are widely used in automotive industries. This is particularly due to the real need to weight saving for more reduction of fuel consumption. The typical alloying elements are copper, magnesium, manganese, silicon, and zinc. Surfaces of aluminium alloys have a brilliant lustre in dry environment due to the formation of a shielding
layer of aluminium oxide. Aluminium alloys of the 4xxx, 5xxx and 6xxx series, containing major elemental additives of Mg and Si, are now being used to replace steel panels in various automobile industries. In this work we are interested to investigate the mechanical properties of aluminium alloy by varying the percentage of silicon. The results showed that with the increasing of silicon content the solidification time increased, as also a decreasing the liquids temperature. The tensile strength of aluminium alloy is increased with increased silicon
content up to 6 %.

In this paper, the analysis of fluid flow around a 2 dimensional circular cylinder with Reynolds ... more In this paper, the analysis of fluid flow around a 2 dimensional circular cylinder with Reynolds No of 200, 500, and 1000 with different angle of attack 0 0 , 5 0 , and 10 0 has been studied. In this simulation an implicit pressure-based finite volume method and second order implicit scheme is used. Flow has been studied with the help of Navier-Stokes and continuity equations. The pressure, drag coefficients and vortex shedding for different Reynolds numbers and different angle of attack were computed and compared with other numerical result that show good agreement.

The aluminum-copper alloys typically contain between 9 to 12% copper, with smaller additions of o... more The aluminum-copper alloys typically contain between 9 to 12% copper, with smaller additions of other elements. The copper provides substantial increases in strength and facilitates precipitation hardening. The copper in aluminum can reduce ductility and corrosion resistance. The susceptibility to solidification cracking of aluminum-copper alloys is increased; consequently, some of these alloys can be the most challenging aluminum alloys to weld. These alloys include some of the highest strength heat treatable aluminum alloys. The main uses for aluminium alloy are in internal combustion engines. In this work we are interesting to investigate the mechanical properties of aluminium alloy to vary the percentage of copper. The results showed that with the increasing of copper content the solidification time increased, and increase of both the ultimate tensile strength and the hardness is obtained by the increase of the copper content.

In this work, Numerical study of Fluid Structure Interaction of uniform flow past a two dimension... more In this work, Numerical study of Fluid Structure Interaction of uniform flow past a two dimensional pleated airfoil is carried out. When the wing interact with the air, it is subjected to both aerodynamic forces acting on the surface of the wing and the inertial force due to the acceleration of deceleration of the wing mass. The interaction between these inertial and aerodynamic forces resulted in wing deformation. The dynamics of a pleated insect wing subjected to aerodynamic loading is studied. The vortex induced vibration and forced vibration of a pleated flexible insect wing subjected to aerodynamic load is studied by using ANSYS-14 multi physics solver. The insect wing is of dragonfly wing cross section. In the first phase of the work, fluid flow simulation at Reynolds Number-100, 200,500, and 1000 will be performed with angle of attack 0 to 15. The result from the CFD solver will be fed in the form of lift and drag forces are then fed into the ANSYS Workbench solver and one way Fluid Structure
Interaction analysis is performed.

The dragonfly wings are highly corrugated, due to light in weight and good corrugation it increas... more The dragonfly wings are highly corrugated, due to light in weight and good corrugation it increases the aerodynamic performance and strength of the wing. The practical application of a dragon fly is relatively small, light weight Micro Air Vehicles (MAVs). The purpose of this paper is to calculate and analysis of natural frequency of the dragon fly wing. . A dragonfly insect has been chosen because MAV and Dragonfly works almost same Reynolds Number i.e. Re- 102 to 104. Aeshna genus dragon fly can glide up to 30s without any significant loss of altitude (Brodsky 1994). Wakeling and Ellington (1997) found gliding speed of Aeshna cyanea is 2.5ms-1. In this work, Numerical study of Modal Analysis for a Pleated Insect 2D Airfoil at Ultra Low Reynolds Numbers is carried out in gliding mode. The dynamics of a pleated insect wing subjected to aerodynamic loading is studied for different Reynolds Number ranging from 100 to 1000 at different angle of attack ranging from 00 to 150 by using ANSYS-14 multi physics solver. The result from the CFD solver will be fed in the form of lift and drag forces are
then fed into the ANSYS Workbench solver and modal analysis is performed.

The composite materials consist of two or more different materials that form regions large enough... more The composite materials consist of two or more different materials that form regions large enough to be regarded as continua and which are usually firmly bonded together at the interface. Many natural and Synthetic materials are of this nature, such as: reinforced rubber, filled polymers, GFRP (Glass Fiber Reinforcement Plastic), Nylon, aligned and chopped fiber composites, polycrystalline aggregates (metals), etc. It is widely used in high speed machinery, aircraft and light weight structures. Crack is a main cause of damage occurring upon dynamic loading and may cause serious failure of structure. The influence of cracks on dynamic characteristics like natural frequencies, modes of vibration of structures has been investigated.
The paper presents the Computational modal analysis of a composite beam with and without cracks. In this work, the mechanical properties of aluminum and fiber (Nylon and Glass fiber reinforcement plastic) are measured a universal testing machine. The three-dimensional finite element models of composite beam with and without cracks are constructed and then computational modal analysis on ANSYS-14 is then performed to generate natural frequencies and mode shapes. The location of cracks will vary from 10 to 90 % of beam length. The finite element model agrees well with the analytical values

Composite materials are engineering materials made from two or more constituent materials that re... more Composite materials are engineering materials made from two or more constituent materials that remain separate and distinct on a macroscopic level while forming a single component. In this work the mechanical properties of GFRP (glass Fiber Reinforcement Plastic), Nylon and their composite with aluminium were evaluated with reference to ASTM D638-02 a. During the tensile load, the maximum strain, and stress are obtained. The maximum strength is found in composite GFRP instead of Aluminium and composite Nylon. Composite material has shown an improvement of mechanical properties when compared with individual materials.

The reactor pressure vessel (RVP) of a pressurized water reactor (PWR) or a boiling water reactor... more The reactor pressure vessel (RVP) of a pressurized water reactor (PWR) or a boiling water reactor (BWR), i.e., of a light water reactor (LWR), is made of carbon steel. The inside surface is clad with stainless steel to prevent general corrosion. These pressure vessels are expected to with-stand normal and postulated accident conditions. These vessels are installed within a concrete biological shield and the whole plant is in turn surrounded by a concrete containment building. Most of the operating experience relates to two and three loop design. The scope of this paper is to study of mechanical behavior of SA 516 grade 65 carbon steel used for steam generator application undergoing thermal cycling loading. The effect of temperature, cycle time, pre stress and no of cycle would be the varying parameters

For a long time now, bimetallic welds (BMWs) have been a necessity within the pressurized water r... more For a long time now, bimetallic welds (BMWs) have been a necessity within the pressurized water reactors (PWR) and boiling water reactor (BWR) designs, where the heavy section low alloy steel components are usually connected to stainless steel (SS) primary piping systems. For PWRs, the BMWs, which are of particular interest, are those attaching the systems to the various nozzles of the reactor pressure vessel (RPV), steam generators (SG) and pressuriser. The scope of this paper is to study of mechanical behavior in bimetallic welds used in nuclear power plant. We intended to summarize the understanding of weld behavior that may be applicable in the design of welded components for nuclear power plant systems.

There are many causes of WMSDs, and to prevent them, the whole work situation must be taken into ... more There are many causes of WMSDs, and to prevent them, the whole work situation must be taken into
consideration; it is therefore a difficult issue to handle. First, it is important to understand what is going on, to get rid of any
biases, to find out the facts. Then, it is necessary to address and evaluate the seriousness of the situation prevailing in the
workplace. If the situation is acceptable, it may be sufficient to simply remain alert and ready to intervene at the slightest
sign of deterioration. If, however, it becomes obvious that the situation is problematic, either because there are already signs
of identified. This project demonstrates that there is ample room for ergonomic improvements in the lock industry. We need
to continue to identify problems and, more importantly, implement solutions to reduce the risk of injuries in situations
where we know problems exist

https://www.irjet.net/archives/V4/i11/IRJET-V4I1194.pdf