Mohd Aslam - Academia.edu (original) (raw)

Papers by Mohd Aslam

Research paper thumbnail of Characterization Compare Procesess And Parametre Of SS304 Between Nitriding and Thin Film Deposition Of TiN By Reactive Magnetron Sputtering

International Journal of Advance Research and Innovative Ideas in Education, 2015

From last few decades we are using thin film coating and nitriding for the improvement of surface... more From last few decades we are using thin film coating and nitriding for the improvement of surface modification. This is also improving mechanical properties wear, corrosion and improving service life of the material, Nitriding is improve hardness of the material fromsurface to some depth and ultimately increase toughness, hardness and also Improve wear resistant of the material and increases productivity. Coating gives different different color depend on the what will be used target for the coating like TiN gives gold color, here we are using two Ti target and flow of reacting gas is Nitrogen . The TiN coating is improving hardness up to 24 Nano-meter thickness will the 1 to 7µ depend on time of experiment and substrate temperature. The uses of TiN thin film coating in universal use, coating on the tool material, forming like molds and dies and also uses for the decorating purpose. We are using Ti Target and reactive magnetron sputtering process for the coating of TiN on the substra...

Research paper thumbnail of Finite element analysis and experimental investigation of moving heat source model for GMAW deposited mild steel weld bead

Proceedings Of The Institution Of Mechanical Engineers, Part E: Journal Of Process Mechanical Engineering, Mar 15, 2022

An investigation has been done to identify the heat source model suitable for numerical modeling ... more An investigation has been done to identify the heat source model suitable for numerical modeling of the Gas Metal arc Welding (GMAW) welding process. In the present investigation, a numerical model was constructed to simulate the GMAW welding process through transient thermal analysis for different thermal heat source models for weld deposition of Mild steel considering semi-cylindrical weld bead geometry. The Gaussian heat source with radial coordinate system and double ellipsoidal thermal heat source have been considered to develop a Finite Element Analysis (FEA) model. Validation of numerical analysis results has been confirmed through experimental investigation. Numerical modeling confirms the utilization of both heat sources, i.e. Gaussian and Double ellipsoidal for the prediction of the weld bead deposition profile. However, the numerical modeling developed using a double ellipsoidal heat source has more resembles experimental investigation due to the utilization of bead profile data. However, the Gaussian heat source is found to be suitable in the case of the unavailability of experimental data. The experimental studies show a variation in the weld bead geometry, along its welding direction due to multiple environmental factors. The microstructural investigation also shows the development of a fine columnar grain structure at the welding bead & weld penetration zone, and the grain structure became coarser at the Heat Affected Zone (HAZ).

Research paper thumbnail of Development of Finite Elemental Analysis Model for Numerical Simulation of TIG Welding of Thin Aluminium Sheet

Lecture notes in mechanical engineering, Sep 21, 2022

Research paper thumbnail of Development of hard and wear-resistant SiC-AISI304 stainless steel clad layer on low carbon steel by GMAW process

Materials Today Communications

Research paper thumbnail of Finite element analysis and experimental investigation on deformation mechanism of non-axisymmetric tube spinning

The International Journal of Advanced Manufacturing Technology, 2011

ABSTRACT This paper developed 3D elastoplastic finite element analysis (FEA) models to investigat... more ABSTRACT This paper developed 3D elastoplastic finite element analysis (FEA) models to investigate non-axisymmetric tubes neck spinning. The three-roller mandreless neck spinning process was simulated by commercial FEA software, MSC. Marc. The distribution of the transient von Mises stresses in the contact zone between the roller and the blank, and the equivalent plastic strains after spinning were obtained. The locations and causes of fractures were analyzed. The thickness distribution of the spun workpiece was investigated numerically and experimentally. It shows that during 3D non-axisymmetric tubes spinning, diametral elongation and fractures mostly occur at the opening end of workpiece, which considered as the primary location of defects. Fractures may also occur easily at the initial spinning area, which may be considered a secondary location of defects. The distributions of equivalent stresses and strains are non-uniform during both offset and oblique 3D non-axisymmetric tubes spinning. The maximum stress and strain values occur at the location where the biggest offset or inclination is induced, while the minimum values occur at the opposite location of 180° away from the maximum values. For the oblique tube, however, the strain distribution changes gradually along the axial direction, which is different from that of the offset tube. Thinning occurs during forward path spinning and thickening occurs during backward path spinning. Therefore, for multipath neck spinning processes, forward and backward paths should be applied alternately to avoid excessive thinning or thickening of workpiece.

Research paper thumbnail of Numerical and experimental investigation for the cladding of AISI 304 stainless steel on mild steel substrate using Gas Metal Arc Welding

CIRP Journal of Manufacturing Science and Technology

Research paper thumbnail of Study of the Effect of Welding Current on Heat Transfer and Melt Pool Geometry on Mild Steel Specimen Through Finite Element Analysis

Lecture Notes in Mechanical Engineering

Mild steel is one of the economical and widely used raw materials in engineering applications. Th... more Mild steel is one of the economical and widely used raw materials in engineering applications. The mild steel specimen could be easily fabricated using conventional arc welding, MMA welding, and gas welding process. TIG welding is one of the conventional welding techniques used in precision welding both for ferrous and nonferrous material. However, it is difficult and uneconomical to detect welding penetration and effect of the welding parameter through metallurgical analysis. Numerical analysis of welding process with the help of computational facility is economical with time saving. In this work, a finite elemental model has been developed to simulate the TIG welding process using bead on plate welding. The Gaussian heat model has been used to find the effect of welding current on weld pool geometry. The results showed that welding current has a maximum effect on weld pool's temperature and geometry. Welding using high current produced high temperature in the weld pool, which leads to high penetration depth in the material. Similarly, the results of the numerical study also showed that with increase in current, the temperature at the center of mild steel increases.

Research paper thumbnail of Characterization Compare Procesess And Parametre Of SS304 Between Nitriding and Thin Film Deposition Of TiN By Reactive Magnetron Sputtering

International Journal of Advance Research and Innovative Ideas in Education, 2015

From last few decades we are using thin film coating and nitriding for the improvement of surface... more From last few decades we are using thin film coating and nitriding for the improvement of surface modification. This is also improving mechanical properties wear, corrosion and improving service life of the material, Nitriding is improve hardness of the material fromsurface to some depth and ultimately increase toughness, hardness and also Improve wear resistant of the material and increases productivity. Coating gives different different color depend on the what will be used target for the coating like TiN gives gold color, here we are using two Ti target and flow of reacting gas is Nitrogen . The TiN coating is improving hardness up to 24 Nano-meter thickness will the 1 to 7µ depend on time of experiment and substrate temperature. The uses of TiN thin film coating in universal use, coating on the tool material, forming like molds and dies and also uses for the decorating purpose. We are using Ti Target and reactive magnetron sputtering process for the coating of TiN on the substra...

Research paper thumbnail of Finite element analysis and experimental investigation of moving heat source model for GMAW deposited mild steel weld bead

Proceedings Of The Institution Of Mechanical Engineers, Part E: Journal Of Process Mechanical Engineering, Mar 15, 2022

An investigation has been done to identify the heat source model suitable for numerical modeling ... more An investigation has been done to identify the heat source model suitable for numerical modeling of the Gas Metal arc Welding (GMAW) welding process. In the present investigation, a numerical model was constructed to simulate the GMAW welding process through transient thermal analysis for different thermal heat source models for weld deposition of Mild steel considering semi-cylindrical weld bead geometry. The Gaussian heat source with radial coordinate system and double ellipsoidal thermal heat source have been considered to develop a Finite Element Analysis (FEA) model. Validation of numerical analysis results has been confirmed through experimental investigation. Numerical modeling confirms the utilization of both heat sources, i.e. Gaussian and Double ellipsoidal for the prediction of the weld bead deposition profile. However, the numerical modeling developed using a double ellipsoidal heat source has more resembles experimental investigation due to the utilization of bead profile data. However, the Gaussian heat source is found to be suitable in the case of the unavailability of experimental data. The experimental studies show a variation in the weld bead geometry, along its welding direction due to multiple environmental factors. The microstructural investigation also shows the development of a fine columnar grain structure at the welding bead & weld penetration zone, and the grain structure became coarser at the Heat Affected Zone (HAZ).

Research paper thumbnail of Development of Finite Elemental Analysis Model for Numerical Simulation of TIG Welding of Thin Aluminium Sheet

Lecture notes in mechanical engineering, Sep 21, 2022

Research paper thumbnail of Development of hard and wear-resistant SiC-AISI304 stainless steel clad layer on low carbon steel by GMAW process

Materials Today Communications

Research paper thumbnail of Finite element analysis and experimental investigation on deformation mechanism of non-axisymmetric tube spinning

The International Journal of Advanced Manufacturing Technology, 2011

ABSTRACT This paper developed 3D elastoplastic finite element analysis (FEA) models to investigat... more ABSTRACT This paper developed 3D elastoplastic finite element analysis (FEA) models to investigate non-axisymmetric tubes neck spinning. The three-roller mandreless neck spinning process was simulated by commercial FEA software, MSC. Marc. The distribution of the transient von Mises stresses in the contact zone between the roller and the blank, and the equivalent plastic strains after spinning were obtained. The locations and causes of fractures were analyzed. The thickness distribution of the spun workpiece was investigated numerically and experimentally. It shows that during 3D non-axisymmetric tubes spinning, diametral elongation and fractures mostly occur at the opening end of workpiece, which considered as the primary location of defects. Fractures may also occur easily at the initial spinning area, which may be considered a secondary location of defects. The distributions of equivalent stresses and strains are non-uniform during both offset and oblique 3D non-axisymmetric tubes spinning. The maximum stress and strain values occur at the location where the biggest offset or inclination is induced, while the minimum values occur at the opposite location of 180° away from the maximum values. For the oblique tube, however, the strain distribution changes gradually along the axial direction, which is different from that of the offset tube. Thinning occurs during forward path spinning and thickening occurs during backward path spinning. Therefore, for multipath neck spinning processes, forward and backward paths should be applied alternately to avoid excessive thinning or thickening of workpiece.

Research paper thumbnail of Numerical and experimental investigation for the cladding of AISI 304 stainless steel on mild steel substrate using Gas Metal Arc Welding

CIRP Journal of Manufacturing Science and Technology

Research paper thumbnail of Study of the Effect of Welding Current on Heat Transfer and Melt Pool Geometry on Mild Steel Specimen Through Finite Element Analysis

Lecture Notes in Mechanical Engineering

Mild steel is one of the economical and widely used raw materials in engineering applications. Th... more Mild steel is one of the economical and widely used raw materials in engineering applications. The mild steel specimen could be easily fabricated using conventional arc welding, MMA welding, and gas welding process. TIG welding is one of the conventional welding techniques used in precision welding both for ferrous and nonferrous material. However, it is difficult and uneconomical to detect welding penetration and effect of the welding parameter through metallurgical analysis. Numerical analysis of welding process with the help of computational facility is economical with time saving. In this work, a finite elemental model has been developed to simulate the TIG welding process using bead on plate welding. The Gaussian heat model has been used to find the effect of welding current on weld pool geometry. The results showed that welding current has a maximum effect on weld pool's temperature and geometry. Welding using high current produced high temperature in the weld pool, which leads to high penetration depth in the material. Similarly, the results of the numerical study also showed that with increase in current, the temperature at the center of mild steel increases.