About Me |
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Building upon the department's tradition of excellence requires the continual development of active partnerships among the faculty, the students, and our constituents. In keeping with this tradition, I am interested in taking part in education and research activities. Be inspiring, patient, and must not preach. I have about 11 years of diversified experience in Teaching in UG levels of Engineering and 1 year of Industrial Work Experience. I am being actively engaged in teaching since 2005. That during my tenure, I ably handled major responsibilities that include teaching, examination, and overall development work by all necessary means. |
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Two-dimensional models namely homogeneous, uniformly distributed grains and non-uniformly distributed grains were developed for AISI S-7 steel grade metal, to investigate the effect of the grains size and orientation on the chip morphology and temperature rise during the orthogonal machining process. A Johnson-Cook model was used for the simulation study. The machining was done at a medium speed of 60 ms-1 and the depth of cut was maintained at 5 mm in all the above cases. Compared to other models, results showed that nonuniformly distributed grains develop alternate low and high shear bands and generate maximum temperature in the high shear band zone, which was found to be detrimental during the machining process compared to other models. Intergranular chip segmentation was observed in the case of uniformly distributed grains. For the same material, three different chip morphologies and temperature profiles were observed during the orthogonal machining process. Detailed discussion on the mechanics of machining of the above-said models was done that may be advantageous for material and tool design scientist.
Lowering the roughness of surface to a minimum value of 6061 alloy work-piece using
CVD aluminum-oxide coated cemented carbide inserts has been analyzed and presented in this
paper. The experimental analysis was carried out for three different cutting speed, feed and depth
of cut. Taguchi’s experimental design is adopted to determine optimum factor level. From
experimental observation it was observed that feed rate had remarkable effect in decreasing
surface roughness followed by speed and depth of cut had minor role. From result obtained by
Taguchi method, it was concluded that, cutting speed, feed and depth of cut of 500 m/min, 0.10
mm/rev and0.20mm respectively are the optimal parameters to be maintained during machining.
The confirmation test was carried out at optimum conditions.
This paper describes the emissions of electromagnetic radiation (EMR) from Sintered metal during deformation under unregulated quasi-static compression. EMR emission characteristics are determined by the end surface conditions of the compressing platens, whether lubricated or unlubricated. The emissions of EMR under compression indicate anisotropy of form. The first EMR emission inevitably happens close to the yield. Dead metal zones formed on the top and bottom portions of the specimens during axial compression theoretically produce a climbing motion of edge dislocations in the mid-regions radially outward. These edge dislocations form accelerated dipoles of the electric line during the climbing motion and emit electromagnetic radiation. Such EMR emissions can be used for determining the degree of harm in compressed metallic components.