Dr. N.C. Santhi Srinivas

Professor
Department/School/Unit Name
Department of Metallurgical Engineering IIT(BHU)
Phone No(s): 9335004273
Email: ncssrinivas.met@iitbhu.ac.in
Area of Interest: Mechanical Metallurgy: Deformation and Fracture, Fatigue Behaviour of Advanced Structural Materials, Failure Analysis; Advanced Steels; Phase Transformations; Corrosion; Additive Manufacturing.
Ph.D (Met. Engg.) Institute of Technology,
Banaras Hindu University, Varanasi, India
1999

Title:

Studies on Precipitation in
High Nitrogen Austenitic
Stainless Steels

Supervisor:

Prof. V.V. Kutumbarao             

M.Tech (Met. Engg.) Institute of Technology,
Banaras Hindu University, Varanasi, India
1989

First Rank
BHU Gold Medal

B.E (Met. Engg.)

Andhra University College of Engineering, Andhra University, Waltair, India

1987 Third Rank

 

   
     
     

 

S.No.

Position 

Name of the Institute

From

To

1.

  Professor

Department of  Metallurgical Engineering,

Indian Institute of Technology (BHU), Varanasi, India

   29.06.2012

   to date

2.

Professor

Department of  Metallurgical Engineering,

Institute of Technology

Banaras Hindu University, Varanasi, India

28.09.2010

28.06.2012

3.

Associate Professor

Department of  Metallurgical Engineering,Institute of Technology, 

Banaras Hindu University, Varanasi, India

28.09.2007

28.09.2010

4.

Reader

Department of  Metallurgical Engineering, Institute of Technology,

Banaras Hindu University, Varanasi, India

28.09.2004

27.09.2007

5.

Lecturer  (Senior Scale)

Department of  Metallurgical Engineering, Institute of Technology, 

Banaras Hindu University, Varanasi, India

27.05.2002

28.09.2004

6.

Lecturer

Department of  Metallurgical Engineering, Institute of Technology, 

Banaras Hindu University, Varanasi, India

27.05.1998

26.05.2002

7.

Research Associate (CSIR)

Department of  Metallurgical Engineering, Institute of Technology, 

Banaras Hindu University, Varanasi, India

1.04.1997

26.05.1998

  8.

 Senior   Research      Fellow (CSIR)

Department of  Metallurgical Engineering,

Institute of Technology, 

Banaras Hindu University, Varanasi, India

  1.03.1993

  28.02.1997

  9.

 Research  Engineer, (DRDO Project)

Department of  Metallurgical Engineering, Institute of Technology, 

Banaras Hindu University, Varanasi, India

  11.2.1992

  31.8.1992

1. Teaching  : Experience in teaching UG/PG courses in Metallurgical Engineering

2.   UG/PG Courses Taught :

  • MT- 2104:  Materials Testing
  • MT- 2211:  Mechanics of Deformation and Fracture
  • MT- 3225:  Mechanical working
  • MT- 4133:  Materials Fabrication Technology
  • MT- 4246:  Industrial Management
  • MT- 4247:  Alloy Design and Development
  • MT- 4250:  Surface Engineering
  • MT- 5116:  Fracture Mechanics and Component Integrity
  • MT- 5142:  Near net shape Processing
  • MT- 5221:  Structural Phase Transformations
  • M​T- 5222:  Industrial Heat Treatment
  • MT- 351:   Deformation and Testing of Materials
  • MT- 412:   Automotive and Aerospace Materials
  • MT- 552:   Failure Analysis
  • MT- 567:   Fracture Mechanics

 3. New Theory Courses / Laboratory Experiments Designed:

 3.1    Theory Courses

  • Designed a course on MT-351: Deformation and Testing of Materials for UG

The course aims at introducing mechanics of deformation and fracture and their relevance to the testing of materials and also various destructive and non-destructive testing methods.  ​

  • Designed a new theory course on MT- 552: Failure Analysis for PG

The course aims at familiarizing students about different types, causes, and mechanisms of failures of engineering components and methodology of failure analysis and remedial measures to prevent failures. ​

  • ​Designed a new theory course on MT- 567 : Fracture Mechanics for PG

The course aims at familiarizing students about principles of fracture mechanics and its application to analyze failures of engineering materials. 

  • Designed a new theory course on MT- 7131: Integrity and Life Assessment of Structural components for Ph.D

The subject is intended to familiarize the students with the integrity of structural components when subjected to different kinds of stresses, temperature, environment and various surface modification processes to improve their performance and life assessment methods.

3.2     Laboratory experiments

         Designed new experiments such as:

  • Measurement of elastic modulus by ultrasonic testing.
  • Coating thickness by eddy current testing.
  • Surface roughness testing by surface roughness tester
  • Flow rate and apparent density of powders.
  • Compaction and sintering of powders

1. Field of specialization            

Broad Area of Specialization: Mechanical Metallurgy

Current Area(s) of Research: Deformation and Fracture, Fatigue Behaviour of Advanced Structural Materials, Failure Analysis; Advanced Steels; Phase Transformations; Corrosion; Additive Manufacturing.

2. Major Research Achievements

          Contributed to the understanding of:  Phase transformations and tensile behaviour of high nitrogen steels;  low cycle fatigue behaviour of Zircaloy-2 and deformation and fracture behaviour at different temperatures; Tensile and low cycle fatigue behaviour(LCF) of modified 9Cr-1Mo steel; the effects of surface nano- crystallization on corrosion, tensile and low cycle fatigue behaviour of 2014 and 7075 Al alloys and superalloy IN718; ratcheting fatigue behaviour of Zircaloy-2; Tensile and LCF behaviour of Superalloy IN 617; Ratcheting fatigue behaviour of modified 9Cr-1Mo steel and Superalloy Inconel 617 at different temperatures and tensile behaviour of M300 maraging steel processed by selective laser melting. Some of the important findings are summarized below.

  • Low cycle fatigue behaviour of Zircaloy-2 was investigated at RT, 300oC and 400oC. Dynamic strain ageing (DSA) at room temperature in Zircaloy-2 was reported for the first time. The development of Corduroy structure resulting from cyclic loading in Zircaloy-2 was observed for the first time at room temperature.

  • In a study on tensile and low cycle fatigue behaviour of modified 9Cr-1Mo steel, unusual Rosette tensile fracture in modified 9Cr-1Mo steel specimens was reported. Rosette fracture is a typical mode of tensile fracture with long radial cracks. This type of fracture was observed in the modified 9Cr–1Mo steel in normalized and tempered condition on tensile testing at room temperature (RT). Radial cracks were observed on the fracture surface at different angular intervals. These cracks propagated longitudinally and were mostly associated with prior austenite grain boundaries and lath boundaries. Also observation of grain rotation phenomena by TEM investigation in cyclic deformation behaviour at 600 °C was unique.

  • In a study on the effect of ultrasonic shot peening (USSP) on corrosion behaviour of 7075 aluminium alloy, it was seen that USSP developed surface nanostructure, induced severe plastic deformation, refined grain size up to certain depth and imparts compressive residual stress in the surface region. The enhancement in corrosion resistance of USSPed sample was due to rapid development of uniform, homogeneous and effective passive layer on the nano-structured surface coupled with refinement of the coarse precipitates.

  • In ratcheting fatigue studies of Zircaloy-2, it was observed that with increase in mean stress and stress amplitude accumulation of ratcheting strain was increased and fatigue life was reduced. However, increase in stress rate led to improvement in fatigue life due to less accumulation of ratcheting strain. Dynamic Strain ageing of Zircaloy-2 under Asymmetric loading at 400oC was reported for the first time.

  • Tensile engineering stress-strain curves of the Inconel 617 alloy in solution treated condition tested at different temperatures from room temperature (RT) to 900°C, at different strain rates (ɛ̇)  exhibit serrations at the low temperature of 300oC are predominantly of type B. At 400oC and 500oC, A+B type serrations and at 600°C, C type serrations are noticed which are characteristic features of DSA. Low cycle fatigue (LCF) testing of IN617 showed continuous cyclic hardening at all the three temperatures, at room temperature, 750oC and 850oC irrespective of the strain amplitude. The number of cycles to fracture (fatigue life) decreased with increase in temperature. Non-Masing behaviour was observed at all the three temperatures.

  • Modified 9Cr-1Mo steel and Inconel alloy 617 (IN-617) are two important structural materials, used for piping/ tubing components in nuclear and advanced supercritical power plants. Such components undergo ratcheting fatigue, due to the mean stress, arising from fluctuations in temperature and internal pressure. This investigation showed the dominant role of uniform plastic strain on ratcheting fatigue resistance comparing ratcheting fatigue life of these two materials under identical normalized mean stress and stress amplitude, at ambient temperature. Accumulated plastic strain in IN-617 was considerably higher than that of modified 9Cr-1Mo steel, although ratcheting fatigue life of IN-617 was much higher than that of modified steel. Higher uniform strain in IN-617 was found to be cause of observed behaviour. An important outcome of the present study is that  uniform tensile strain of material can be considered as an important parameter for selection of materials to be used as tubular products in power plants, experiencing ratcheting fatigue.

  • The effect of build orientation on tensile, LCF, and corrosion behaviour of maraging steel (M300) processed by one of the AM techniques, namely, Powder Bed Fusion (PBF) was examined. Better strength with reasonable ductility was observed in the samples built in 45° orientation compared to those at other build orientations and the properties in CM conditions. Surprisingly, most of the AM samples after heat treatment showed increase in strength without significant loss of ductility. Larger degree of work hardening and reversion of martensite to austenite might be the reasons for the observed behaviour. The 0o AB samples showed best fatigue life followed by lives at 45o AB and 90o AB samples.   The corrosion behaviour of the heat treated samples was influenced by the precipitation and reverted austenite present. Best corrosion resistance was observed in 0o orientation among all the orientations studied.

3. Research Guidance

  • Ph. D  Guidance

S.No

Name of the Student

Year of Completion /
Registration

Title of the Thesis

1.

Ms. Preeti Verma

 

2016 (Awarded)

Tensile and low cycle fatigue behavior of modified 9Cr-1Mo steel

2.

Mr. Rupendra Singh Rajpurohit
 

2018 (Awarded)
 

Ratcheting fatigue behavior of Zircaloy-2

3.

Mr. Vaibhav Pandey
 

2018 (Awarded)
 

Effect of surface nano-crystallization on low cycle fatigue behavior of 7075 alloy

4.

Mr. Ch. Visweswara Rao
 

2021(Awarded)

Tensile and low cycle fatigue behavior of Superalloy  IN617

5.

Ms. Prerna Mishra 

2023 (Awarded)

Ratcheting fatigue behavior of modified 9Cr-1Mo steel and Super alloy IN 617

6.

Mr. Jaydeep Vishwakarma
 

2023 (Awarded)
 

Mechanical and Corrosion behavior of maraging steel processed by Powder Bed Fusion using Laser Beam

7.

Mr. R. Pavan Kumar

2018 (ongoing)

Development of low density, high modulus steels

8.
 

Ms. Vasu Shreyasi

2019( ongoing)

Tensile and Low Cycle Fatigue Behavior of Superalloy IN625

9.

Mr. K. Sivarama

2021(ongoing)

Low cycle fatigue and corrosion behaviour of surface hardened Cr-Si spring steels

M. Tech. Guidance:  40+

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Year of completion  

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Mr. Vayalada Bhavani Shankar

Mr. Neeraj Devadwal

Mr. Sarat Chandra Koredla

Mr. Pritam Mohanty

Mr. Thandarapally Nagaraju

Mr. Ashish Shukla

Mr. Suvranshu Bag

Mr. Suryansh Garg

Ms. P. Sukanya

Mr. L. Hanuma Kumar

Mr. M.B.V. Suraj

Mr. Akashay Kumar Singh

Mr. Akash Dubey

Mr. Newton J.Kakadia

Mr. Shivendra Singh  Chauhan

Mr.  Bishal Sao

Mr. Ramji Omar

Mr. Akshay Bansod

Mr. Sambeet Tiady

Mr.Amandeep singh Chhabra

Mr. Shivesh Kaushik

Ms.Shalini Sikdar

Mr. Avnish Singh Pal

Mr. Anil Kumar Mali

Mr. Shailendra Bahadur Singh

Mr. Siddarth Srivastava

Mr. Shobhit Kumar

Mr. Vaibhav Pandey

Mr. Bakuru Gopal krishnakanth Raju

Mr. Mayur Mittal

Mr. Piyush Ranjan

Mr. K. Sravanth

Mr. Bh. Mahasenadhipati Rao

Mr. Manwendra Kumar Tripathi

Mr. Vinay Patankar

Mr. Ziauddin Mohammad

Mr. Janak Lal

Mr. Reetesh Pendase

Mr. K.R.Satyanarayana

Mr. K.Venkateswarlu

2022

2022

2021

2021

2020

2020

2019

2019

2018

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2017

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2016

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2015

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2014

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1999

1999

Effect of layer thickness on wear and corrosion behaviour of AlSi10Mg alloy by DMLS

Stress corrosion cracking of 304 stainless steel

Corrosion protection of steel surfaces using reduced graphene oxide as protective coating

Additive manufacturing and its potential applications in automotive and medical sectors.

Characterization of Al-Si-Mg alloy produced by Direct Metal Laser Sintering

Effect of cooling rate on corrosion behavior of high nitrogen austenitic stainless steel

Effect of recrystallization on corrosion behavior of high nitrogen steels

Stress Corrosion Cracking of 2029 Al alloy

Effect of cryo rolling on recrystallization behavior of austenitic stainless steels

Effect of oxidation on tribological and mechanical properties of Ti-6Al-4V alloy

Deformation behavior of austenitic stainless steel

Studies on recrystallization in high nitrogen steels

Effect of laser shock peening on tensile behavior of modified 9Cr-1Mo steel

Preparation and characterization of Fe-Cu-graphite bearings by powder metallurgy route

Thermal-mechanical treatments of high nitrogen steel                                            

Effect of HT on microstructure and mechanical properties of medium carbon low alloy steel

Hot deformation behavior of indigeneously produced nitrogen steels for critical applications

High temperature deformation behavior of Modified  9Cr-1Mo steel

Corrosion behavior of  high nitrogen steels in acids present in food items

Effect of surface modification on mechanical behavior of structural steels

Plastic flow behavior of high nitrogen steels

Cyclic deformation behavior of structural materials for advanced nuclear applications

Wear behaviour of  medium carbon low alloy steel

Deformation and fracture behaviour of LCF tested of cast Ni-based superalloy

Characterisation of LCF behavior of Cr-Mo steels at different temperatures

Characterisation of LCF behavior of Zircalloy-2 at different temperatures

Mechanical behavior of high nitrogen steels

Effect of surface nanocrystallisation on mechanical behavior of 2014 Al alloy

Analysis of deformation behavior in High Nitrogen Steels

Characterisation of low cycle fatigue behavior of Ni-base superalloy at high temperature

Tensile and LCF behavior of modified 9Cr-1Mo steel

Microstructure and Mechanical Properties of a Zircoalloy-2 

Effect of cold rolling on tensile and LCF behaviour of austenitic stainless steel

Effect of cold rolling on tensile, low cycle fatigue and texture behaviour of  Timetal 834

Effect of deformation on precipitation behavior and tensile properties of high nitrogen Steels 

Characterisation of Fe-Mn-TiC composites prepared by Self-propagating High-Temp Synthesis

Effect of prior cold work on high-temperature tensile behaviour of a high nitrogen steel

Study of initial stages of cellular precipitation in high nitrogen austenitic stainless steel

Void nucleation and growth during ductile fracture of a low carbon steel at elevated temp     

Characterization of  ductile Fracture in low-carbon steel     

4. Publications:

Book Chapters:

S.No Title of the Chapter Names of Authors Publisher Year of Publication
1.

Ratcheting Fatigue Behaviour of Advanced Structural Materials (Book Chapter), Patra, S., Sinha, S., Mahobia, G.S., Kamble, D. (eds) Proceedings of the International Conference on Metallurgical Engineering and Centenary Celebration. METCENT 2023. Springer, Singapore.

https://doi.org/10.1007/978-981-99-6863-3_31

Prerna Mishra, N.C. Santhi Srinivas, GVS Sastry and Vakil Singh Springer Nature 2023
2.  Stress-Strain Behaviour of Modified 9Cr-1Mo steel under asymmetric cyclic stressing at Room temperature (Book Chapter)
Lecture Notes in Mechanical Engineering: Structural Integrity Assessment:
https://doi.org/10.1007/978-981-13-8767-8_61
Prerna Mishra, R S Rajpurohit, N.C. Santhi Srinivas and Vakil Singh Springer Nature 2019
3. Deformation Behavior of Inconel 617 Alloy Under Monotonic and Cyclic Loading
Applications of Microscopy in Materials and Life Sciences. Springer Proceedings in Materials, Ghosal P., Carter C.B., Vinothkumar K.R., Sarkar R. (eds) vol 11. Springer, Singapore. https://doi.org/10.1007/978-981-16-2982-2_9
N.C. Santhi Srinivas, Ch.Visweswara Rao, G.V.S.Sastry, V.Singh Springer 2021
4.

Response of Modified 9Cr-1Mo Steel Under Asymmetrical Stress Loading at 600°C, Recent Trends in Design, Materials and Manufacturing,  Singh, M.K., Gautam, R.K. (eds) Lecture Notes in Mechanical Engineering. PP163-172, Springer, Singapore.

Prerna Mishra, NC Santhi Srinivas, GVS Sastry, Vakil Singh

Springer 2022
  • Selected Technical Articles:

 

  • Jaydeep Vishwakarma, RS Rajpurohit, G Sudhakar Rao, K Chattopadhyay, NC Santhi Srinivas, Low cycle fatigue behaviour of additive manufactured maraging steel: Influence of build orientation and heat treatment, Materials Letters, (2023), 350,134943, https://doi.org/10.1016/j.matlet.2023.134943,
  •  
  • N.C. Santhi Srinivas,, K. Chattopadhyay, Jaydeep Vishwakarma,  Mechanical behaviour of maraging steel processed by Powder Bed Fusion using Laser Beam (PBF-LB) in different orientations, Key Engineering Materials, 2023-05-31 ISSN: 1662-9795, Vol. 964, pp 123-128,  (2023) Trans Tech Publications Ltd, Switzerland, https://doi.org/10.4028/p-04MEjm
  •  
  • Prerna Mishra, N. C. Santhi Srinivas, Vakil Singh, Pre‑ratcheted Tensile Properties of Nickel Base Alloy IN‑617 at RT, Transactions of Indian Institute of Metals, (2023),  https://doi.org/10.1007/s12666-023-03200-z
  •  
  • Jaydeep Vishwakarma, K. Chattopadhyay, N.C. Santhi Srinivas, Influence of build orientation and aging on corrosion behaviour of 18Ni300 maraging steel produced via Powder Bed Fusion using Laser Beam (PBF-LB), Materials Today Communications, Volume 35, (2023), 105825, ISSN 2352-4928,https://doi.org/10.1016/j.mtcomm.2023.105825
  •  
  • Jaydeep Vishwakarma, K Chattopadhyay and N C Santhi Srinivas, Effect of build orientation on wear and erosion behavior of maraging steel processed by powder bed fusion using laser beam (PBF-LB), Surface Topography: Metrology and Properties, Volume 10, Number 4, 10 045006 (2022) https://doi.org/10.1088/2051-672X/ac998f
  •  
  • Mishra, P., Srinivas, N.C.Santhi., Sastry, G.V.S. and Singh V. Ratcheting Fatigue of Superalloy IN-617 Under Tensile Mean Stress at RT,  Transactions of Indian Institute of Metals,  75, 3127–3138 (2022). https://doi.org/10.1007/s12666-022-02667-6
  •  
  • Prerna Mishra, NC Santhi Srinivas, and Vakil Singh. "Ratcheting fatigue of modified 9Cr-1Mo steel and Inconel alloy 617 at ambient temperature: Effect of uniform plastic strain." Materials Letters (2022): 131916.
  •  
  • Prerna Mishra, N. C. Santhi Srinivas, G. V. S. Sastry, and Vakil Singh. "Effect of Mean Stress on Ratcheting Fatigue Behavior of Modified 9 Cr–1 Mo Steel at RT and 600° C.Transactions of the Indian National Academy of Engineering (2022): 1-8
  •  
  • Santhi Srinivas, N.C., Visweswara Rao, C., Sastry, G.V.S., Singh, V. (2021). Deformation Behavior of Inconel 617 Alloy Under Monotonic and Cyclic Loading. In: Ghosal, P., Carter, C.B., Vinothkumar, K.R., Sarkar, R. (eds) Applications of Microscopy in Materials and Life Sciences. Springer Proceedings in Materials, vol 11. P87-95, Springer, Singapore.
  •  
  • Ch. Visweswara Rao, N.C. Santhi Srinivas, G.V.S. Sastry, Vakil Singh, Effect of microstructure on work hardening behaviour of IN-617 alloy, Materials Science and Engineering: A, Volume 800, (2021), 140317, ISSN 0921-5093, https://doi.org/10.1016/j.msea.2020.140317
  •  
  • Prerna Mishra, N.C. Santhi Srinivas, G.V.S.Sastry and V.Singh Influence of Pre-Ratcheting Fatigue on Tensile Behavior of Modified 9Cr-1Mo Steel at Ambient Temperature, Transactions of Indian Institute of Metals,74, 937–948 (2021)https://doi.org/10.1007/s12666-021-02211-y
  •  
  • Jaydeep Vishwakarma, K. Chattopadhyay, N.C. Santhi SrinivasEffect of build orientation on microstructure and tensile behaviour of selectively laser melted M300 maraging steel, Materials Science and Engineering: A, Volume 798, (2020),140130, ISSN 0921-5093, https://doi.org/10.1016/j.msea.2020.140130
  •  
  • V.Pandey, Manish Kr Singh, J.Basu, K.Chattopadhyay, N.C.Santhi Srinivas, V.Singh, Effect of surface nanostructuring in solution treated and thermally aged condition on LCF life of AA7075, Surface Coatings and Technology, 404 (2020), 126431
  •  
  • Ch. Visweswara Rao, N.C. Santhi Srinivas, G.V.S. Sastry, Vakil Singh, Low cycle fatigue behavior of salt coated and pre-exposed IN-617 alloyMaterials Characterization, Volume 169, (2020),110645, ISSN 1044-5803, https://doi.org/10.1016/j.matchar.2020.110645
  •  
  • Mishra, P., Rajpurohit, R.S., Srinivas, N.C.S, Sastry GVS and Singh V, Ratcheting Fatigue Behavior of Modified 9Cr–1Mo Steel at Room TemperatureMetallurgical and Materials International, (2020). https://doi.org/10.1007/s12540-020-00811-, 2020.
  •  
  • R. S. Rajpurohit, Prerna Mishra, N. C. Santhi Srinivas, S. R. Singh & V. Singh Ratcheting Fatigue Behaviour of Zircaloy-2 at 300 °CMetals and Materials International (2020), DOI: https://doi.org/10.1007/s12540-020-00686-w
  •  
  • Ch.Visweswara rao, N.C. Santhi Srinivas, GVS Sastry, Vakil Singh, Dynamic Strain Ageing, Deformation and Fracture behavior of nickel base superalloy  IN617Materials Science and Engineering A, 742, (2019), p44-60.
  •  
  • J. Lal, S. Kumar, N.C.Santhi Srinivas, Effect of Preliminary Cold Working on High-Temperature Tensile Behavior of Nickel-Free High-Nitrogen Austenitic Steel, Metal Science and Heat Treatment, November (2019), Volume 61, Issue 7–8, pp 478–481, Springer
  •  
  • V.Pandey, K. Chattopadhyay, N.C. Santhi Srinivas and Vakil Singh, Thermal and Microstructural Stability of Nanostructured Surface of Aluminium Alloy 7075, Materials Characterisation, Vol 151, (2019), p242-251.
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  • V Pandey, JK Singh, K Chattopadhyay, NC Santhi Srinivas, V Singh, Optimization of USSP duration for enhanced corrosion resistance of AA7075, Ultrasonics, Vol 91, (2019), p180-192.
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  • R. S. Rajpurohit, N. C. Santhi Srinivas , S. R. Singh and Vakil Singh. “Effect of ratcheting on tensile behavior of Zircaloy-2 at room temperature". Transactions of Indian Institute of Metals 71, (2018), p1149-1160
  •  
  • R. S. Rajpurohit, N. C. Santhi Srinivas, S. R. Singh and Vakil Singh. “Fatigue behavior of Zircaloy-2 under asymmetric cyclic loading at 400ºC". International Journal of Pressure Vessels and Piping 159, (2018),  p84-92.
  •  
  • Preeti  Verma,  N.C.  Santhi  Srinivas, Vakil  Singh,  Low  Cycle  fatigue  behavior  of modified 9Cr-1Mo steel at 300oC , Materials Science and Engineering A, (2018), 715, p17-24.
  •  
  • Preeti Verma, Joysurya Basu, N.C. Santhi Srinivas, Vakil Singh, ``Deformation behavior of modified 9Cr–1Mo steel under low cycle fatigue at 600 °C’, Materials CharacterizationVol 131, (2017), p244-252.
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  • Vaibhav Pandey, J. K. Singh, K. Chattopadhyay, N.C. Santhi Srinivas, and Vakil Singh. “Influence of Ultrasonic Shot Peening on Corrosion behavior of 7075 Aluminum alloy.” Journal of Alloys and Compounds, 723, (2017), p826-840.
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  • Vaibhav Pandey, K. Chattopadhyay, N.C. Santhi Srinivas, and Vakil Singh. “Effect of stress relieving treatment on low cycle fatigue behavior of USSP treated 7075 aluminium alloy.” IOP Conf. Series: Materials Science and Engineering,  194, (2017) p012037.
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  • Vaibhav Pandey, K. Chattopadhyay, N.C. Santhi Srinivas, and Vakil Singh. “Role of Ultrasonic Shot Peening on Low Cycle Fatigue Behavior of 7075 Aluminium Alloy.” International Journal of Fatigue, 103, (2017), p426-435.
  •  
  • N. C. Santhi Srinivas, Preeti Verma, Vakil Singh, Dynamic Strain Ageing Behavior of Modified 9Cr-1Mo Steel under Monotonic and Cyclic Loading, Procedia Engineering, Vol 184, (2017), p765-777.
  •  
  • Preeti Verma, G Sudhakar Rao, N.C. Santhi Srinivas, Vakil Singh, Rosette tensile fracture of modified 9Cr-1Mo steel, Materials Science and Engineering A, 683 (2017), p172-186.
  •  
  • R.S. Rajpurohit, , N.C. Santhi Srinivas, V. Singh,  Ratcheting Strain Accumulation due to asymmetric cyclic loading of Zircaloy-2 at room temperature, Procedia Structural Integrity, 2 (2016), p2757-2763.
  •  
  • Vaibhav Pandey, K.Chattopadhyay, N.C.Santhi Srinivas and Vakil   Singh, Low cycle fatigue behavior of AA7075 with surface nanogradient structure produced by ultransonic shotpeening, Procedia Structural Integrity, 2 (2016), p3288-3295. 
  •  
  • R.S. Rajpurohit, G. Sudhakar Rao, K. Chattopadhyay, N.C. Santhi Srinivas, V. Singh, Ratcheting fatigue behavior of Zircaloy-2 at room temperatureJournal of Nuclear Materials, 477, (2016), p67-76.
  •  
  • Vakil Singh, Vaibhav Pandey, Sanjeev Kumar,  N C Santhi Srinivas, Kausik     Chattopadhyay.  Effect of Ultrasonic Shotpeening on Surface Microstructure and Fatigue Behavior of Structural Alloys’Transactions of Indian Institute of Metals, 69(2), (2016), p295-300.
  •  
  • Preeti Verma,  N.C.Santhi Srinivas, Vakil Singh, `Low Cycle Fatigue Behaviour of modified 9Cr-1Mo steel at 600 °C, Transactions of Indian Institute of Metals, 69(2), (2016), p331-335.
  •  
  • Preeti Verma, N.C. Santhi Srinivas, S.R. Singh and Vakil Singh,`,Low Cycle Fatigue Behaviour of Modified 9Cr-1Mo steel at Room Temperature’Materials Science and Engineering A, 652 (2016), p30-41.
  •  
  • Vaibhav Pandey, G. Sudhakar Rao, K.Chattopadhyay, N.C.Santhi Srinivas and Vakil   Singh, `Effect of ultrasonic shot peening on microstructure and cyclic deformation of 2014 Aluminium Alloy, Materials Science and Engineering A:  647, (2015), p201-211
  •  
  • G. Sudhakar Rao, Preeti Verma, J.K. Chakravartty, N. Saibaba, G.S. Mahobia,  N.C. Santhi Srinivas, V. Singh, “Inverse Strain rate effect of cyclic response in annealed Zircaloy-2’Journal of Nuclear Materials, 457, (2015),  p330-342.
  •  
  • Preeti Verma, Sudhakar Rao G., P. Chellapandi, G.S. Mahobia, Kausik Chattopadhyay, Santhi Srinivas N.C., Vakil Singh, Dynamic strain ageing, deformation, and fracture behavior of modified 9Cr–1Mo steel, Materials Science and Engineering: A, 621, (2015),  p39–51.
  •  
  • Sanjeev Kumar, G.Sudhakar Rao, K.Chattopadhyay, GS Mahobia, N.C. Santhi Srinivas and Vakil Singh,` Effect of surface nanostructure on tensile behavior of Superalloy IN718’, Materials and Design, 62, (2014), p76-82.
  •  
  • G. Sudhakar Rao, J.K. Chakravartty, N. Saibaba, G.S. Mahobia, Kausik Chattopadhyay,  N.C.Santhi Srinivas, Vakil Singh, Disappearancehttp://www.sciencedirect.com/science/article/pii/S0921509314002172 and reappearance of serrated plastic flow under cyclic loading: A study of dislocation substructures’ Materials Science and Engineering A, 603, (2014), p114-120.
  •  
  • K. Chattopadhyay, V. Pandey, N. C. S. Srinivas, and V. Singh. "Effect of surface nanostructure on tensile and low cycle fatigue behavior of Al 2014 alloy." IOP Conference Series: Materials Science and Engineering, vol. 63, no. 1, (2014), p012017. IOP Publishing,
  •  
  • G.S. Mahobia, Neeta Paulose, S.L. Mannan, R.G. Sudhakar, K. Chattopadhyay, N.C. Santhi Srinivas, Vakil Singh, `Effect of hot corrosion on low cycle fatigue behavior of superalloy IN71’International Journal of Fatigue,  59(2014), p272-281.
  •  
  • N.C. Santhi Srinivas,` Precipitation characteristics of High Nitrogen Austenitic Stainless Steels’ Proceedings of 11th  International Conference on `High Nitrogen Steels and Interstitial alloys’ Sept 27-29,2012, Chennai, India Eds. U.Kamachi Mudali, MG Pujar and Baldev Raj, (2013), pp155-164, VRK Printing House , Chennai.
  •  
  • M.K.Tripathi, N.C.Santhi Srinivas and V.Singh, `Effect of cold rolling on low cycle fatigue behaviour of  Timetal 834’,  International Journal of Research in Engineering and Technology,  2(8), (2013), p345-348
  •  
  • G.S.Mahobia, Sudhakar R.G, Ajesh Antony, K.Chattopadhyay, N.C.Santhi Srinivas    and Vakil Singh ,  `Effect of salt environment on low cycle fatigue behavior of nickel- based   superalloy IN718’, Proceedia  Engineering, 55, (2013), p830-834.
  •  
  • G.S. Mahobia, Neeta Paulose, S.L. Mannan, K. Chattopadhyay, N.C. Santhi Srinivas, Vakil Singh, `Tensile behavior of superalloy IN718 in hot corrosive environment’ Journal of Materials Engineering and Performances, 22(12), (2013), p3810-3817.
  •  
  • G. Sudhakar Rao, J.K. Chakravarty, N. Saibaba, G.S. Mahobia, K. Chattopadhyay, N.C. Santhi Srinivas, V. Singh, `Low Cycle Fatigue Behavior of Zircaloy-2 at Room Temperature’Journal of Nuclear Materials, 441(1-3), (2013), p455-467.
  •  
  • G.S.Mahobia, K.Chattopadhyay, N.C.Santhi Srinivas, N.Prasad and Vakil Singh, Environmental effects on mechanical behaviour of nickel-based superalloys’The Banaras Metallurgist, Vol 16, (2011), p165-174.
  •  
  • N.C.Santhi Srinivas and V.V.Kutumbarao , `Mechanical Behaviour of  high nitrogen austenitic stainless steels’ ,  Transactions of IIM, Vol 64,No 4-5, (2011), p331-337
  •  
  • G.S.Mahobia, K.Chattopadhyay, N.C.Santhi Srinivas, N.Prasad and Vakil Singh, `Environmental effects on mechanical behaviour of nickel-based superalloys’, Proceedings of International conference on Non-ferrous Metals, (2010), Varanasi, Eds. T.R.Mankhand, NK Mukhopadhyay and  CR Mishra, Tech-2/1 –Tech 2/11
  •  
  • N.C. Santhi Srinivas and V.V. Kutumbarao,  `Growth Mechanism of  Discontinuous Precipitation in a Multi-component  (Fe-Cr-Mn-N) System’,  Scripta Materialia, 51, (2004), p 1105-1109
  •  
  • N.C.Santhi Srinivas, Reetesh pendase, Goutama, GVS Sastry and V.V.Kutumbarao, `Initial Stages of Discontinuous Precipitation in High Nitrogen Austenitic Stainless Steels’,  Transactions of  IIM, Vol. 55, No.4, (2002), p 247
  •  
  • N.C. Santhi Srinivas and V.V.  Kutumbarao, `Nickel-Free High Nitrogen Austenitic Stainless Steels’ , The Banaras Metallurgist,  Vol.14 & 15, (1997), p148
  •  
  • N.C. Santhi Srinivas and G.M.K. Sarma , `Investigations on a Melt-spun Mg2Al5Cu6 Alloy’The Banaras Metallurgist Vol.14 & 15, (1997), p115
  •  
  • N.C.Santhi Srinivas and V.V.Kutumbarao, `On the Discontinuous Precipitation of Cr2N in Cr- Mn-N Austenitic Stainless Steels’,  Scripta Materialia,  Vol.37, No.3, (1997), p 285.

5. Invited Lectures 

  1. `Image Analysis’, One–day Seminar on Metallurgical Researches, at Dept. of    Metallurgical.Engineering,  IT-BHU on  Aug 8, 2002    
  2. `Material Testing Methods',  Lecture given  for Participants of Materials Quiz,  Dept. of  Met.Engg, IT-BHU on  Aug 25, 2006
  3. `Mechanical Testing’ Lecture given in Training Programme  for executives of Maruti Suzuki Ltd, 14 -21 February, 2014, Dept. of Met. Engg, IIT (BHU)
  4. `Fracture Mechanics’, Lecture given in Training Programme  for executives of Maruti Suzuki Ltd, 14-21 February, 2014, Dept. of Met. Engg, IIT (BHU)
  5. `Low Cycle Fatigue Behavior of Advanced Structural Materials’, Invited Lecture, National Workshop on Fatigue and Fracture of Engineering Materials and Structures,  December 2014,  MNNIT Allahabad , India
  6. `Fracture and Failure Analysis’, Metallurgy for Non-Metallurgists (MNM-2015), December 8-10, 2015, Department of Metallurgical Engg,IIT(BHU)
  7. `Fracture and Fractography of Steels, QIP short term course on `Advanced Steel Technologies’ on March 5, 2017 at IIT(BHU), Varanasi
  8. Hardness Testing, QIP Short Term Course on `Mechanical Properties and Deformation Behavior of  Structural Materials’, Aug 27-Sep 2, 2018, Dept.of Met.Engg, IIT(BHU), Varanasi.
  9. `Non-Destructive Testing’ QIP Short Term Course on `Mechanical Properties and Deformation Behavior of Structural Materials’, Aug 27-Sep 2, 2018, Dept. of Met.Engg, IIT(BHU), Varanasi
  10. Non-Destructive Testing’ QIP Short Term Course on `Metallurgical Failures’, Feb 23-March 2, 2019, Dept. of Met.Engg, IIT(BHU), Varanasi
  11. `Fracture Mechanics' AICTE-QIP- Short term course on Mathematical Modelling and Analysis on Continnum Mechanics, Sept 9-15th, 2019, Dept. of Mathematical Sciences, IIT(BHU), Varanasi
  12. `Importance of micro-destructive testing in Archaeometallurgy' during the online short-term course on the “Archaeometallurgy and Scientific Analysis of Ancient Metal Objects”  from 9-13 th August, 2021 organized by National Research Laboratory for Conservation of Cultural Property, Lucknow
  13. `Effect of build orientation on microstructure and tensile properties of selectively laser melted M300 maraging steel', One-Day National Seminar on Additive Manufacturing: Trends and Opportunities”, held on December 16th 2021, in the Department of Mechanical Engineering at Punjab Engineering College (Deemed to be University), Chandigarh, INDIA.
  14. Metal Additive Manufacturing’ on 27th March, 2022 at NIT, Durgapur organized by IIM Durgapur Chapter in association with IIM Students’ Chapter, NIT Durgapur.
  15. `Characterization Techniques for Additive manufacturing' Lecture series on Additive manufacturing, Part-I Materials for Additive manufacturing, 12th Ocober,2022, Department of Mechanical Engineering, IIT(BHU), Varanasi
  16. `Mechanical behaviour of maraging steel processed by powder bed fusion via laser beam (PBF-LB) in different build orientations,THERMEC'2023, International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS: Processing, Fabrication, Properties, Applications, 2-7th July, 2023, TU Wien, Vienna, AUSTRIA.
  17. `Mechanical Behaviour of Additive Manufactured Maraging Steel`' 29th International Conference on Processing and Fabrication of Advanced Materials (PFAM-29) | September 06-08, 2023 at IIT Tirupati.
  18. `Ratcheting Fatigue Behaviour of Advanced Structural Materials', International Conference and Centenary Celebrations (METCENT 2023), 26- 28th October 2023, IIT(BHU), Varanasi.
  19. `Mechanical Behaviour of Maraging Steel Processed by Powder Bed Fusion', 77th Annual Technical Meeting, The Indian Institute of Metals (IIM), 22nd to 24th November 2023,  KIIT, Bhubaneswar, India

6. Research facilities created through sponsored projects

Sl. No.

Year

Name of equipment

Cost of equipment at the time of purchase

(Rs in lakhs)

Funding Agency

Present Status

(Operational or non-operational)

1.

 

2.

 

3.

 

4.

2013

 

2014

 

2014

 

2021

Controller Upgrade for MTS

 

Struers Fully Automatic Twin Jet Electropolisher Tenupol-5

Revamping of 50T capacity Instrumented Rolling Mill along with high temperature installation.

1. High Temperature Axial Extensometer for 50kN MTS(810)

2. Water Chiller (Capacity 35kW) for HPU model no. 515.20

3. Servo valve for 50kN MTS(810)

 4. Reduced build plate assembly for existing AM system at ARCI

55.00

 

14.20

 

4.55

 

 

24.53

BRNS, Mumbai

 

SGF, IIT(BHU)

 

SGF, IIT(BHU)

 

 

SERB-DST, New Delhi

Operational

 

Operational

 

Operational

 

 

Operational

 

Administrative Experience: 

  • Administrative Warden, IT Girls Hostel, Institute of Technology, Banaras Hindu University, Varanasi (2002-2003)
  • Administrative Warden, Gandhi Smriti Mahila Chhatravas, Institute of Technology, Banaras Hindu University, Varanasi (2003-2008)
  • Joint–Coordinator, Mechanical Metallurgy Division, Department of Metallurgical Engineering, IT-BHU, Varanasi (2004- 2007)
  • Convener, Anti-ragging Vigilance Squad, IT-BHU, Varanasi (2008-2009), (2009-2010).
  • Member, Ragging Prevention Committee, IT-BHU, Varanasi (2009-2010).
  • Member, Disciplinary Committee, IT-BHU, Varanasi, (2009-2010)
  • Deputy Presiding Officer, IIT-JEE Examination at IT-BHU, 2009.
  • Member, Organizing committee, Faculty development Programme, UGC-ASC, 2010
  • Member Secretary, Department Research  Committee, Dept. Met Engg, (2011-2012)
  • Convener, Departmental Post Graduate Committee, Dept. Met Engg, (2012- 2014)
  • Convener, Departmental Library Committee, Dept of Met. Engg, IIT(BHU), (2015-16)
  • Member, Library purchase committee, Dept. of Met. Engg, IT (2004-2007, 2010-2012, 2012-2013)
  • Member, Departmental Research Committee, (2010-2012)                
  • Member, Departmental Purchase Committee, Dept of Met.Engg, IIT(BHU), (2015- 2016)
  • Professor–in- Charge, Department Library, Department of Metallurgical Engineering, IIT(BHU), Varanasi (2004-2007), (2015-2017)
  • Member, Departmental Faculty Affairs Committee, Dept of Met.Engg, IIT(BHU), (2015- 2018)
  • Coordinator, Mechanical Metallurgy Division, Department of Metallurgical Engineering, IIT(BHU), Varanasi (2011 -to date               
  • Editor, The Banaras Metallurgist
  • Co-Investigator of the project “Setting up an Advanced Research Center for Iron and Steel at IIT(BHU), Steel Development Fund, Ministry of Steel, GOI, Rs 30.98 crores.
  • Member, Senate, IIT(BHU), Varanasi, 2012 -to date
  • Nominated Member, Senate Post Graduate Committee, IIT(BHU), 2014-2015

Membership:

1. Fellow, Indian Institute of Metals, Kolkata, India (2020)

2. Founder Life Member, Society for Failure Analysis, Hyderabad, India

3. Life member, Electron Microscope Society of India, Mumbai, India   

4. Life Member, Indian Institute of Metals, Kolkata, India (till 2020)   

Positions Held:   

 1. Honorary Treasurer (2001-2003)
     Indian Institute of Metals, Varanasi Chapter
                                                                   
2.  Honorary Secretary (2007-2010)
     Indian Institute of Metals, Varanasi Chapter    

3. Reporter (2008-2012) 
     IIM Metal News, Kolkata                                                          

4. Chairperson (2013-2015)
    Indian Institute of Metals, Varanasi Chapter    

 

National Level/ International level:

  • Selected Participant and Awardee, Leadership for Academicians Programme (LEAP)  conducted by Indian Institute of Technology, Roorkee and Ross School of Business, University of Michigan, Ann Arbor, Michigan, USA, Nov 17-Dec 7, 2018 and sponsored by Ministry of Human Resource Development (MHRD), Government of India, 2018 
  • Selected women Technologist, DST sponsored programme on `Socio-Economic Impact Assessment of S&T outcomes for Women Scientists and Technologists' at CSIR-HRDC, Ghaziabad, India, November 18-22, 2019.
  • Advisor and Subject ExpertUnion Public Service Commission (UPSC), New Delhi, India, 2019-to date 
  • Expert Member, DRDO for Assessment of the Scientists (B-E), July 2020.      
  • Member, Programme advisory committee (PAC) on Materials, Minerals and Mining, Science and Engineering Research Board, Department of Science and Technology (SERB-DST), New Delhi, India, 2021-24.    
  • Chief Guest, "Women in Metallurgy" program, 2021-22” on 27th March, 2022 organized by IIM, Durgapur Chapter in association with IIM, Students’ Chapter, NIT, Durgapur.
  • Subject Expert, Faculty Recruitment, NIT-Tiruchirapalli, 2022.
  • Subject Expert, Faculty Selection Committee, IIT-Patna, 2022. 
  •  
  • Reporter, IIM Metal News, Kolkata, 2008- 2012
  • Member, Vidyalaya Management Committee,  Kendriya Vidyalaya, BHU Campus,  Varanasi, 2008- 2010
  • Member, Executive Committee, Indian Institute of Metals, Varanasi Chapter, 2013- 2018
  • Reviewer, Proceedings of First Structural Integrity Conference and Exhibition (SICE- 2016), Bangalore, July 4-6, 2016
  • Paper Setter for Selection and Application of Materials, Associate Membership Examination, Indian Institute of Metals, Kolkata 2012- 2017
  • Member, National Advisory Committee, International Conference on Materials and Processing Technologies (AMPT 2017), 20th edition of the conference series, VIT, Chennai, December 11-14, 2017, 
  • Member, Conference Technical Committee, 4th International Conference on Mechanical, Materials, and Manufacturing (ICMMM 2017), Atlanta, USA, October 25-27, 2017.
  • Member, Conference Technical Committee, 5th International Conference on Mechanical Properties of Materials (ICMPM 2017), Amsterdam, Netherlands, November 27-29, 2018                 
  • Member, Conference Technical Committee, 6th Int.Conf on Mechanical, Materials and Manufacturing (ICMMM 2019), Boston, USA, October 12-14, 2019.
  • Chairperson, Technical session on Additive Manufacturing, THERMEC'2023, International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS: Processing, Fabrication, Properties, Applications, 2-7th July, 2023, TU Wien, Vienna, AUSTRIA.
  • Chairperson, Technical Session on Modelling and Simulation, 29th International Conference on Processing and Fabrication of Advanced Materials (PFAM-29) | September 06-08, 2023 at IIT Tirupati.
  • Chairperson, Technical Session on Additive Manufacturing and Advanced Manufacturing Techniques, International Conference and Centenary Celebrations (METCENT 2023), 26- 28th October 2023, IIT(BHU), Varanasi.
  • Chairperson, Technical session on Advance Materials Processing and Manufacturing Techniques, 77th Annual Technical Meeting, The Indian Institute of Metals (IIM), 22- 24th November 2023,  KIIT, Bhubaneswar, India
  •  
  • Reviewer, Transactions of Indian Institute of Metals, Springer.
  • Reviewer, Materials Letters, Elsevier.  
  • Reviewer, Journal of the Brazilian Society of Mechanical Sciences and Engineering, Springer 
  • Reviewer, International Journal of Pressure Vessels and Piping, Elseveir
  • Reviewer, Journal of Alloys and Compounds, Elseveir. 
  • Reviewer, Materials Science and Engineering A, Elseveir.   
  • Reviewer Appreciation Certificate Awarded, Transactions of Indian Institute of Metals, Springer. 2022
  • Reviewer Appreciation Certificate Awarded, Journal of Alloys and Compounds, Elseveir. 2022. 
  • Top Ranking Reviewer, September 2023 and October 2023, Transactions of Indian Institute of Metals, Springer.                                                                                                        
S.No Name of Award Awarding Institution Year
1. BHU Gold Medal for standing First at M.Tech (Met. Engg.) IT(BHU), Varanasi 1989
2.
 
Jawahar Lal Nehru   Memorial Fund Award for standing First at M.Tech (Met. Engg)
 
Jawahar Lal Nehru
Memorial Fund, New Delhi
1989
3. Certificate of Appreciation at the International Conference on Advances in Materials and Processing Technologies (AMPT 2016) University of Malaya,
Kaula Lumpur, Malaysia
2016
4.

Leadership for Academicians Programme (LEAP) Awardee

conducted by Indian Institute of Technology, Roorkee and Ross School of Business, University of Michigan, Ann Arbor, Michigan, USA, Nov 17-Dec 7, 2018 

Ministry of Human
Resource Development
(MHRD), Govt. of India
2018
 
5. Fellow, Indian Institute of Metals, Kolkata Indian Institute of Metals, Kolkata 2021

Other: 

First  Rank at `Certificate course in Sanskrit Language'.

 

At IIT(BHU), Varanasi conducted by Rashtriya Sanskrit Sansthan, New Delhi
 
August 2016 - April 2017
First Rank at `Diploma Course in Sanskrit Language'. At IIT(BHU), Varanasi conducted by Rashtriya Sanskrit Sansthan, New Delhi.
 
September 2017-April 2018
 
  • Major Consultancy Projects  
S.No Title of the Project Agency Amount (INR) Year Other        
investigators
1. Evaluation of SAILMA 550Hi grade steel used for making Penstock
 
RDCIS, SAIL
Steel Authority of India Limited, Ranchi, India
20,72,000
 
2017
 
Dr R Manna,
Coordinator,
 & other
Faculty Members
2. Failure Analysis of Gudgeon Pin Maruti Suzuki India Limited, Gurgaon    4,92,000  2019

Dr. K.Chattopadhyay
Prof. V.Singh, Dr. GS Mahobia

3.

Microstructural characterization and mechanical behavior of AM alloys and composites

Raytheon Intelligence and Space, USA $25,000 2020

Prof. N. K. Mukhopadhyay(Coordinator), 

Prof.R.K. Mandal, Dr. K. Chattopadhyay, Dr. R. Manna, Dr.J.Basu

  • Testing
S.No Title of the Project Agency Amount (INR) Year Other        
investigators
1. Mechanical Testing (Tensile Testing, compression testing, bend testing, hardness testing, surface roughness testing)
 
NTPC,Unchahar
Raebareli
North Central
Railway,
Allahabad,
RGCVY,
Jaunpur and other Indian agencies
92,000
 
2015-16
 

Dr. K.Chattopadhyay
 
 
 

2. Mechanical Testing (Tensile Testing, compression testing, bend testing, hardness testing, surface roughness testing) 
 
 
NTPC, Unchahar
Raebareli
Mahavir
Traders, Sigra
Chetak
Industries,
CPWD(BHU)
NBCC
NCL, Singarauli
 
4,42,000
 
2016-17 Dr. K.Chattopadhyay
 
3. Mechanical Testing
(Tensile Testing, compression testing, bend testing, hardness testing, surface roughness testing, coating thickness measurement)
Airport
Authority of
India, VNS
NBCC ltd,
CPWD(BHU)
Techno
Electric &Engg,
Gayatri
Electric Works
1,60,000 2017-18 Dr. K.Chattopadhyay