DR SHUBHRATA NAGPAL
@bitdurg.ac.in
PROFESSOR, MECHANICAL ENGINEERING
BHILAI INSTITUTE OF TECHNOLOGY , DURG ,C.G. , INDIA
List of publication
International Journal : 38
National Journal: 01
International Conferences: 07
National Conferences: 32
ONE CANDIDATE AWARED PhD
05 research scholars doing their phd UNDER ME.
President of LION CLUB BHILAI VIDYA, President of JCI Bhilai Steel Lady chapter
EDUCATION
Done bachelor in engineering degree from GEC , JABALPUR IN mechanical engineering. Masters in MACHINE DESIGN from GEC , JABALPUR.
HAVE DONE PhD in STRESS ANALYSIS FROM NATIONAL INSTITUTE OF TECHNOLOGY RAIPUR .
RESEARCH INTERESTS
STRESS ANALYSIS , FEM , VIBRATION
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Sharda Pratap Shrivas, G. K. Agrawal, Shubhrata Nagpal, and Shailesh Dewangan
CRC Press
Ramit Chugh and Shubhrata Nagpal
The Electrochemical Society
A machine component goes through various stress conditions and it is essential for a designer to analyze the stresses generated in the component accurately. Experimental stress analysis plays a vital role in designing a component.
Sharda Pratap Shrivas, G.K. Agrawal, Shubhrata Nagpal, and Amit Kumar Kachhawaha
Elsevier BV
Sharda Pratap Shrivas, G.K. Agrawal, Shubhrata Nagpal, Amit Kumar Vishvakarma, and Ashish Kumar Khandelwal
Elsevier BV
Abstract Industrial applications involving dissimilar alloys (AA4018 -AA8011) joined by friction stir welding have improved the mechanical strength of the welded joint. This work investigated the effect of heat addition on the mechanical properties of a dissimilar aluminum alloy welded joint. The heat treatment hardening effect revolution is found in aluminum alloys, which helps in producing friction heat so that the mechanical strength of the joint can increase. Maximum tensile strength could be obtained is also determined by SEM image for welding joint improvement. Micro hardness was measured in different areas of welded joints for observing its mechanical properties.
Sanjay G. Sakharwade and Shubharata Nagpal
International Journal of Mathematical, Engineering and Management Sciences plus Mangey Ram
Belt is costliest part of belt conveyor system. Sudden rise in belt tension within transient starting condition, results in belt failure and structure damage. It is difficult to measure these stresses by static calculation method and hence their presence might go undetected. Belt elongation is an evident quantity for these stresses. Dynamic belt stretch is formulated in terms of displacement response of conjugative belt units with respect to time. This paper presents analysis of the event and propagation of dynamic belt stretch for straight horizontal and straight inclined belt conveyor system. Dynamic behavior of belt system is investigated for starting condition of fully stacked conveyor belt. Belt conveyor system is considered as series of vibrating mass and its unit is assumed to be a viscoelastic segment. Equation of motion of belt unit is developed by Lagrange’s approach. Observed transient parameters are more vibrant in inclined belt than the horizontal belt system. Maximum value of dynamic belt stretch for horizontal belt systems founds 1.13% of total belt length and for inclined belt conveyor system, it is 1.16% of belt length. Both values are within range of standard value specified for fabric belt system.
Shubhrata Nagpal, Nitin Kumar Jain, and Shubhashis Sanyal
Springer Science and Business Media LLC
The problem of finding the stress concentration factor of a loaded rectangular plate has offered considerably analytical difficulty. The present work focused on understanding of behavior of isotropic and orthotropic plate subjected to static in-plane loading using finite element method. The complete plate model configuration has been analyzed using finite element method based software ANSYS. In the present work two parameters: thickness to width of plate (T/A) and diameter of hole to width of plate (D/A) have been varied for analysis of stress concentration factor (SCF) and its mitigation. Plates of five different materials have been considered for complete analysis to find out the sensitivity of stress concentration factor. The D/A ratio varied from 0.1 to 0.7 for analysis of SCF and varied from 0.1 to 0.5 for analyzing the mitigation of SCF. 0.01, 0.05 and 0.1 are considered as T/A ratio for all the cases. The results are presented in graphical form and discussed. The mitigation in SCF reported is very encouraging. The SCF is more sensitive to D/A ratio as compared to T/A.
Shubhrata Nagpal, Nitin Jain, and Shubhashish Sanyal
Faculty of Engineering, Chulalongkorn University
A number of analytical, numerical & experimental techniques are available for the reduction of stress concentration factor around discontinuities. Using various techniques the SCF around different discontinuities in a rectangular plate made up of different materials under different loading conditions have been reported in literature. Mitigation of stress concentration around different types of discontinuity is also reported in literature. This paper is to present an analysis and overview of emerging techniques developed for analysis as well as mitigation of stress concentration. The proposed methods in literature are compared.