Ashish W Selokar
@mzcollege.org
Assistant Professor
M. Z. Mahavidyalaya Desaiganj (Wadsa)
EDUCATION
PhD and Post Doc, IIT roorkee, Roorkee
RESEARCH, TEACHING, or OTHER INTERESTS
Materials Science, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Surfaces and Interfaces
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
R. Balaji, Ganti Naga Alekhya, Metta Sai Sharath, Anirudh Srinivas Vellimedu, and Ashish Selokar
AIP Publishing
R. T. Sarath Babu, Ashish Selokar, Chandrakant Dorlikar, R. Balaji, and Sunil Chaudhari
AIP Publishing
Gnanadurai Ravikumar Solomon, R. Rahul, R. Balaji, and Ashish Selokar
Springer Nature Singapore
R. T. Sarathbabu, M. Kannan, R. Balaji, and Ashish Selokar
Springer Nature Singapore
Rajkumar Ashok Patil-Tekale, Aditya Gadekar, Yash Gadhade, Laukik Parakh, R. Balaji, and Ashish Selokar
Springer Singapore
R. Balaji, Ashish Selokar, Nilesh Ugemuge, Viraj Modi, and Chirag Goyal
Elsevier BV
Chirag D. Bhatt, Mukesh Nadarajan, R.Balaji, Isukapalli rohith, and Ashish Selokar
Elsevier BV
Ashish Selokar, Balaji Ramachandran, K.N. Elangovan, and Bhupathiraju Dattatreya Varma
Elsevier BV
K. Suneel, N. Nagmohan Rao, R. Balaji, N. Srikanth, Gnanadurai Ravikumar Solomon, and Ashish Selokar
Springer Singapore
K. A. Alex Luke, J. Arun, R. Hemanth Prasanna, and Ashish Selokar
Springer Singapore
K. A. Alex Luke, V. Balaji Reddy, and Ashish Selokar
Springer Singapore
, John Presin Kumar A, Ravikumar Solomon G, , Sivakumar S, , Balaji R, , Mukesh Nadarajan, ,et al.
Blue Eyes Intelligence Engineering and Sciences Engineering and Sciences Publication - BEIESP
Brick kiln industries are commonly found in most of the regions in our country. Many private sectors consider this type of industry more as a business rather than giving importance to hygiene and health aspects. This work has focused on the air pollutants emitted from brick kiln industries near Chennai and its environmental effects. Majority of pollutants emitted were found to be oxides of nitrogen (NOx), carbon dioxide (CO2) and oxides of sulphur (SOx). Generally all these gases have adverse bad effects on the well health of human community. Workers in brick kiln industries are directly inhaling toxic pollutant gases and suffer with various health complexities. Sampling sites were chosen based on last five years historical data. Experimental survey was done in the chosen sampling sites to observe the severity of pollution around the place. Time bound study and observation was conducted to know the pollution effects in various months ranging from October 2018 to February 2019. Air Quality Index (AQI) was calculated and remedial measures were suggested
R. Balaji, S. Sivakumar, Mukesh Nadarajan, and Ashish Selokar
Elsevier BV
Balaji R, Mukesh Nadarajan, Ashish Selokar, Sreenu S Kumar, and Sivakumar S
Elsevier BV
Kanav Bhatia, Ankit Singla, Anirudh Sharma, Shailesh Singh Sengar, and Ashish Selokar
Springer Singapore
Krishna Khattri, Gulshan Choudhary, B.K. Bhuyan, and Ashish Selokar
IOP Publishing
The magnetic abrasive machining (MAM) process is a highly developed unconventional machining process. It is frequently used in manufacturing industries for nanometer range surface finishing of workpiece with the help of Magnetic abrasive particles (MAPs) and magnetic force applied in the machining zone. It is precise and faster than conventional methods and able to produce defect free finished components. This paper provides a comprehensive review on the recent advancement of MAM process carried out by different researcher till date. The effect of different input parameters such as rotational speed of electromagnet, voltage, magnetic flux density, abrasive particles size and working gap on the performances of Material Removal Rate (MRR) and surface roughness (Ra) have been discussed. On the basis of review, it is observed that the rotational speed of electromagnet, voltage and mesh size of abrasive particles have significant impact on MAM process.
Sandan Kumar Sharma, Yashpal, Ashish W. Selokar, B. Venkata Manoj Kumar, and T. Venkateswaran
Elsevier BV
S. Verma, P. Dubey, A. W. Selokar, D. K. Dwivedi, and R. Chandra
Springer Science and Business Media LLC
Ashish Selokar, Ujjwal Prakash, Desh Bandhu Goel, and Balabhadrapatruni Venkata Manoj Kumar
Iron and Steel Institute of Japan
The effect of grain size on solid particle erosion and cavitation erosion of a nitrogen alloyed austenitic stainless steel has been investigated. Heat treatment of the steel at elevated temperatures results in an increase in grain size and thus modification in mechanical properties. Particle erosion tests were performed using an air jet erosion tester. An ultrasonic processor with a stationary specimen was used to investigate the cavitation erosion performance. The cavitation erosion rates were found to increase with the increase in grain size. The particle erosion rate shows no significant change with increase in grain size. The worn surfaces were examined to study the characteristic damage features using scanning electron microscope (SEM). The nitrogen alloyed austenitic stainless steel exhibited superior resistance to cavitation erosion and particle erosion than a 316L stainless steel. The hardness, yield strength and ultimate tensile strength of the steels are related with the erosion resistance.
Ravi Kant, Ashish Selokar, Vijaya Agarwala, and U. Prakash
Trans Tech Publications, Ltd.
The effect of carbon addition on Fe-22.0Al-5.0Ti alloy on structure and properties has been investigated. Microstructural and phase analysis have been investigated by using optical microscopy, scanning electron microscope (SEM) equipped with EDAX. For low carbon addition (0.1 wt.%), two-phase microstructure consisting of precipitates of TiC in B2 matrix. The presence of large amount of carbon (1.0 or 1.5 wt.%) resulted formation of Fe3AlC0.5 and TiC precipitates in B2 matrix. The results show that the mechanical properties of Fe-22.0Al-5.0Ti increased with increase in the carbon content and strongly depend upon nature and volume fraction of different precipitates. The volume fraction of precipitates increased with increase in the content of carbon. The behavior of Fe-22.0Al-5.0Ti alloy was explained by the combined effect of precipitation hardening and solid solution strengthening. The main effect of addition of carbon related to improvement in the compressive strength without loss in the ductility. The decrease in the wear rate is mainly attributed to the high hardness of the composites and as well hard TiC play a role of load carrying.
Ashish Selokar, Ravi Kant, D.B. Goel, and U. Prakash
Trans Tech Publications, Ltd.
In the present work, comparison of solid particle erosive behaviour of 13/4 steel and Nitrogen alloyed austenitic stainless steel (23/8N steel) have been studied using air jet erosion testing. Air jet erosion testing has been performed at various angles for as received samples at 31 m/s velocity and a discharge rate of 3 gm per minute by alumina particles with angular shape and 53-63μm size. Microstructure, eroded surface characteristics, mechanical properties and erosion rate are characterized by using scanning electron microscope, hardness and tensile testing. 23/8N steel shows good hardness coupled with high tensile toughness and work hardening ability, which leads to improved erosion resistance. The surface morphology analysis of the worn out surfaces, cumulative weight loss measurements and steady state of erosion rate results were used to understand the effect of nitrogen on the degradation mechanisms. The results show that 23/8N steel exhibits excellent resistance to erosion in comparison to13/4 steel.
Nilamadhaba Sahu, Ashish Selokar, and Ujjwal Prakash
Iron and Steel Institute of Japan
The flow behaviour as well as initiation of dynamic recrystallization in Fe-23wt%Cr-8wt%Ni (23/8 steel) austenitic steel containing 0.28 wt% nitrogen was investigated using Gleeble 3800 thermomechanical simulator. Hot working was carried out in temperature range of 950–1 100°C at strain rates ranging from 0.01 to 10 s. Based on experimental results a constitutive equation was predicted for peak flow stress embracing the Zener-Hollomon parameter. The deformation activation energy and stress exponent were calculated as 671.66 KJ/mole and 3.762 respectively. The critical stress for initiation of dynamic recrystallization was determined by the identification of an inflection point in the strain hardening rate versus stress plot. The average normalized critical stress for the metal was found as 0.806. The power dissipation efficiency and instability maps for the 23/8 austenitic stainless steel were developed adopting modified Dynamic material model (DMM). The power dissipation efficiency calculated using DMM was compared with that of modified DMM. The validity of power law during deformation process for the above material was analysed. The processing maps in connection with microstructures and experimental flow curves were used to interpret possible safe processing conditions of the above material during hot metal working. The peak efficiency of 35.91% at 0.6 strain was observed under 1 100°C and 1 s whereas the optimum processing condition was found under 1 100°C and 0.1 s having efficiency of 23.4%. Dominating damage mechanisms causing microstructure instability in this material are identified.
Ashish Selokar, Ujjwal Prakash, D. B. Goel, and A. Chaurasia
Springer Science and Business Media LLC
Ashish Selokar, D.B. Goel, and Ujjwal Prakash
Trans Tech Publications, Ltd.
Abstract: Hydroturbine blades in hydroelectric power plants are subjected to erosion. Currently these blades are made of 13/4 martensitic stainless steel (ASTM grade A743). This steel suffers from several maintenance and welding related problems. Nitronic steels are being considered as an alternative to martensitic stainless steels since they have good weldability. In present work, erosive behaviour of 13/4 Martensitic and Nitrogen alloyed austenitic stainless steel (23/8N steel) has been studied. Cavitation erosion tests were carried out in distilled water at 20 KHz frequency at constant amplitude. Microstructure of eroded surface, mechanical properties and erosion rate were characterized. It was observed that 23/8N steel possesses excellent resistance to erosion in comparison to 13/4 martensitic steels. 23/8N steel showed good hardness coupled with high tensile toughness and work hardening ability, leading to improved erosion resistance.
S.G. Sapate, A. Selokar, and N. Garg
Elsevier BV