sudheer sajjan
VTU Belgaum, Karnataka, INDIA, Mechanical Engineering, Faculty Member
Research Interests:
In recent review paper we have observed that, the manufacturing and automotive sectors, a metal matrix use was increased. Owing to its strong metal thermal conductivity and weak thermal expansion coefficient in ceramics. In this paper,... more
In recent review paper we have observed that, the manufacturing and automotive sectors, a metal matrix use was increased. Owing to its strong metal thermal conductivity and weak thermal expansion coefficient in ceramics. In this paper, wearing behavior, in different proportions as 10:20, 15:15 and 20:10 respectively, of aluminum (Al) reinforced with Copper Sulphate and Silicon Carbide, based upon its mass fraction. The MMC was produced by the sintering method in the above mentioned proportions. The temperature and the furnace pressure are 540 o C and 150N during the sintering cycle. M2 inch, or so. In the finance, the maintained heating average was 20 o C / min. The 0.9% to 1.0% lubrication of Copper Sulphate stearate means the ceramic and metal remain tightly connected. The fit of MMCs was checked on specific forms of fabric, stiffness or fit (Rockwell). Study of SEM according to requirements of ASTM [7]. The wear strength and hardness have been decreased and the ceramic compositio...
Behavior of aluminum matrix (LM6) /Silicon nitride composite is investigated by analytical and finite element analysis. Tests are performed to find out the static(deformation) and dynamic(natural frequency) behavior for 0%,6%,and 10%... more
Behavior of aluminum matrix (LM6) /Silicon nitride composite is investigated by analytical and finite element analysis. Tests are performed to find out the static(deformation) and dynamic(natural frequency) behavior for 0%,6%,and 10% volume fraction of silicon nitride/LM6 composite.Static analysis(deformation) modal analysis (natural frequency) are simulated using the finite element analysis software ANSYS. Keywords— Metal matrix composite, LM6, Silicon nitride, static analysis, dynamic analysis
Research Interests:
Commercially available LM4 Aluminum alloy was subjected through Severe Plastic Deformation (SPD) method by Multi-Axial Forging Process (MAF) in ambient temperature. In this process, the material was processed successfully up to 5 Passes... more
Commercially available LM4 Aluminum alloy was subjected through Severe Plastic Deformation (SPD) method by Multi-Axial Forging Process (MAF) in ambient temperature. In this process, the material was processed successfully up to 5 Passes and mechanical properties such as tensile strength, compression strength and hardness of the as received and processed samples at ambient temperature were evaluated. The MAF processed sample result showed that the ultimate strength, percentage elongation and compression strength improved by 55 MPa, 3.75% and 162 MPa respectively as compared with the unprocessed sample. Hardness also increased with the increase in the number of passes. In the case of microstructure, grain size reduced from 110 μm to 8 μm after subjecting the sample to MAF. Fractography explains the nature of the fracture from received to processed samples by decreasing the size of the dimple and the type of fracture observed was ductile in nature. Improvement in strength and hardness ...
Light metal Al alloys are presently used in aerospace and industrial applications. Hence, in the present study choice of material will be LM2 aluminum alloy and processed by multi-axial forging (MAF) technique at ambient temperature for... more
Light metal Al alloys are presently used in aerospace and industrial applications. Hence, in the present study choice of material will be LM2 aluminum alloy and processed by multi-axial forging (MAF) technique at ambient temperature for different number of passes with an equivalent strain of 0.18, 0.36 and 0.54. Microstructural analysis was carried out on unprocessed and processed samples with scanning electron microscopy (SEM). As the number of MAF pass increases the average grain size was reduced because of plastic deformation by plane strain condition. Mechanical properties like Vickers hardness (VHN), tensile and compression test were carried out. Ultimate tensile strength (UTS) was increased after each pass of MAF due to strain hardening effect. After 3 MAF passes the compression strength was reached to maximum of 495 MPa as compared to as received sample 315 MPa and hardness, increased to 81 VHN as compared to 55 VHN for the received samples. The fractography analysis was expl...
Additive manufacturing technology is one of the rapidly growing areas of research and development since it has tremendous potential to replace some of the existing conventional manufacturing processes. Additive manufacturing is a way of... more
Additive manufacturing technology
is one of the rapidly growing areas of research
and development since it has tremendous
potential to replace some of the existing
conventional manufacturing processes.
Additive manufacturing is a way of
manufacturing parts of building layer-bylayer
thus fabricating three-dimensional
physical models directly from a computeraided
design (CAD) model. The Additive
manufacturing method can produce fully
dense metal parts in a short time, with higher
precision. Selective Laser Sintering (SLS)
technique uses powder bed fusion, in which
each powder bed layer is selectively fused by
using a laser or electron beam, as an energy
source. It is the most promising additive
manufacturing technology that can be used
for manufacturing smaller and medium
volume, simpler or complex metal parts. This
review presents evolution, current status and
challenges of the SLS Technique. The article
presented emphasises on metal material
processed by SLS technique. It also talks
about the SLS Technique in terms of
advantages/disadvantages, materials,
machines and applications.
is one of the rapidly growing areas of research
and development since it has tremendous
potential to replace some of the existing
conventional manufacturing processes.
Additive manufacturing is a way of
manufacturing parts of building layer-bylayer
thus fabricating three-dimensional
physical models directly from a computeraided
design (CAD) model. The Additive
manufacturing method can produce fully
dense metal parts in a short time, with higher
precision. Selective Laser Sintering (SLS)
technique uses powder bed fusion, in which
each powder bed layer is selectively fused by
using a laser or electron beam, as an energy
source. It is the most promising additive
manufacturing technology that can be used
for manufacturing smaller and medium
volume, simpler or complex metal parts. This
review presents evolution, current status and
challenges of the SLS Technique. The article
presented emphasises on metal material
processed by SLS technique. It also talks
about the SLS Technique in terms of
advantages/disadvantages, materials,
machines and applications.