Research

Postdoctoral Research Associate (2022- Current)

Project Executive Officer (2021- 2022)

Senior Project Scientist (2020-2021)

Senior Project Engineer(2019-2020)

Senior Student Research Associate- ( 2014 – 2019) (Total 16 months)

Doctor of Philosophy in Mechanical Engineering (July 2012 – February 2019)

• Indian Institute of Technology Kanpur, India, Supervisor: Prof. Nachiketa Tiwari

• Dissertation: Design, Modelling,  and Validation of a Hydro-acoustic Projector

• Designed, fabricated and tested a hydro-acoustic projector; a device which uses valves, pistons, hydraulic cylinder, hydraulic actuation mechanisms, and diverse hydraulic components to produce low frequency sound for oceanic applications.

• An electrically analogous network of the device was developed. Simulation results were validated experimentally.

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Master of Technology in Mechanical Engineering (July 2011 – February 2019)

• Indian Institute of Technology Kanpur, India, Supervisor: Prof. Nachiketa Tiwari.

• Dissertation: Design of strain gauge based technologies to measure in-cylinder pressure, in-cylinder moving projectile velocity, and alternating fluid flow.

• Fabricated a flow meter to measure alternating hydraulic fluid flow.

• Proposed and validated a new method to measure in-cylinder projectile velocity.

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B. Tech project ( July 2009 – April 2010)

• Government Engineering College Calicut, India, Project Investigator: Associate Prof. Sajith Babu

• Project: Design and fabrication of hydrostatic pipe testing apparatus

• Fabricated an apparatus and tested the ability of a pipe specimen to withstand static fluid pressure.

• Designed of flanges and fasteners. Skilled in turning, drilling, welding and thread cutting operations.

Experimental and Instrumentation Expertise:

• Instruments: Vector network analyzer, hand-held sound level analyzer, scanning electron microscope (SEM), piezoelectric transducers, electrodynamic shaker, microphones, accelerometers, power amplifiers, oscilloscopes, signal generators, probe station, tensile testing machine, fluid pressure and flow sensors, strain gauges, laser displacement sensor, oscilloscopes, tensile testing machine, torque meter, frequency domain measurements, digital filter design, and digital image co-relation using high-speed cameras.

• Data acquisition: NI LabView and Signal Express, NI DAQ card & chassis, Teensy, and Arduino.

• Fluid power systems: including valves, accumulator, and hydraulic power pack.

Lab and facility Development 

• Dhwani/ Acoustics lab, IIT Kanpur (Constructed in 2012)

• Anechoic chamber, IIT Kanpur (Constructed between 2012 to 2014)

• CAD labs, IIT Kanpur

• Hydraulic ramming circuit

Modelling software: SolidWorks, AutoCAD, Autodesk Inventor and Fusion 360.

Analysis & FEA software: Digital Image Correlation (DIC) using VIC-3D, and VIC-2D software, Comsol Multiphysics, and introductory knowledge in MSC Actran, MSC Patran, MSC Nastran, MSC Adams, and Abaqus

Data acquisition software: National Instruments Signal Express, HPI BWF 3000.

Computational tool & computer languages: MATLAB (Including Simulink Sim-Power systems and Simscape Fluids), HTML, CSS.

Word processors: LATEX, Microsoft Word

For an updated list of publications, please visit the Google Scholar link

Journals

1. V. S. Sreejith, and N. Tiwari, “Modelling of a hydroacoustic projector to produce low frequency sound,” in The Journal of the Acoustical Society of America, JASA, 147 (4), (2020).

2. V. S. Sreejith, MH Desai, MZ Aslam, S Ju, and H Zhang, “Temperature-compensated surface acoustic wave internal pressure sensor for nondestructive structural inspection of spent fuel canisters,” in Sensors and Actuators A: Physical, 360, (2023).

3. V. S. Sreejith, and N. Tiwari,“Influence of compliance, and effective orifice discharge coefficient on performance of a hydroacoustic projector,” in Applied Acoustics, Elsevier, 177, (2021).

4. Vijaya Kumar Narne, V. S. Sreejith, and N. Tiwari, “Long-term average speech spectra and dynamic ranges of seventeen Indian languages,” in American Journal of Audiology, (2021).

5. V. S. Sreejith, and N. Tiwari,“Design sensitivity studies on a hydroacoustic projector using an experimentally validated easy-to-build model,” in Archives of Acoustics, 47(1), (2022).

6. Aslam, M. Z., H. Zhang, V. S. Sreejith, M. Naghdi, and S. Ju. “Advances in the surface acoustic wave sensors for industrial applications: Potentials, challenges, and future directions: A review.”, in Measurement 222: 113657, (2023)

7. V. S. Sreejith, and N. Tiwari, “Strain gauge-based method to determine in-cylinder projectile velocity and gas pressure,” The Journal of Strain Analysis for Engineering Design, (2023).

8. S. Jhu, M. Naghdi, M. Aslam, M. Hardik, V. S. Sreejith, and H. Zhang, “Resonant Sandwich structured Piezoelectric Cantilever for Volatile Alcohol Level Monitoring”, Smart Materials and Structures, 32, 125014, (2023).

9. V. S. Sreejith, and N. Tiwari, “Modelling and Simulation of a Hydro-Acoustic Projector,” in The 23rd International Congress on Sound and Vibration, Athens, Greece, (2016).

Other Publications

10. V. S. Sreejith, and N. Tiwari,“Modelling of a hydroacoustic projector,” in International Conference on Acoustics and Engineering Applications NSA, (2016), KIIT Gurgaon, India.

11. V. S. Sreejith, and N. Tiwari,“Validation of an Electrically Analogous Model for an Electro- Hydro- Acoustic Projector Using Commercially Available Hydraulics System Modelling Software,” in National Symposium on Acoustics, at Ravenshaw University Odissa, (2019), India.

12. V. S. Sreejith and H. Zhang, Surface Acoustic Wave Sensors for Nondestructive Structural Monitoring of Nuclear Spent Fuel Canisters at Elevated Temperature, ASME SMASIS (2023) Conference at Austin, Texas 78752-4346, USA.

Japan Asia Youth Exchange program in science SAKURA, 13–22 Feb 2019

• • Workshop: Pipe inspection robot

  • Workshop Organizer: Prof. Harutoshi Ogai, Waseda University, Kitaky¯ ush¯ u, Japan.

Machine Learning: Prof. Andrew Ng, Dept. of Comp. Sc., Stanford University, Online 2021

Fundamentals of Fluid Power: Prof. James D. Van de Ven and Prof. William K. Durfee, Department of Mechanical Engineering. University of Minnesota, Online 2020

Autodesk Fusion 360 Student Expert Boot camp certificate Feb 2017

Diploma in Mechanical CADD, CADD centre training services Calicut (AutoCAD, and SolidWorks) Feb 2010

Workshop on Entrepreneurship & Personality Development, Calicut management association and Government Engineering College, Calicut, India Feb 2008

Diploma in Computer Applications, Rashtriya Computer Sakshartha Mission, Prism, Technologies, Irinjalakuda, Kerala, Feb 2004

Engineering designing and modelling:

• Certificate of merit for securing first in inter college Mechanical CAD drawing competition held in connection with National Technology day celebrations at Government Engineering college 2009, Kozhikode.

• 2nd prize in still modeling in sub-district level Mathematics fair 2000, Irinjalakuda.

• 2nd prize in still modeling in sub-district level Science fair 1999,Irinjalakuda, Kerala

Miscellaneous

• Balarama digest scholarship award, Bal Jyothi scholarship award, Secured 94% marks in state level Sugam Hindi exam.

• Secured 3rd rank in school level PCM scholarship exam 1998.

• Secured distinction in State level PCM scholarship exam 1994.

Taught a vibration class at the University of North Texas in the absence of the primary faculty 2023.

Teaching assistant for following Massive Open Online Courses (MOOCs) by NPTEL (Jan 2016 – Oct 2020)

Fundamentals of Acoustics, Basics of Noise and its Measurements, Noise Management and Control, Basics of Finite Element Analysis – I and II,.

Academic tutor for Engineering Design and Graphics (ME 251A), Indian Institute of Technology Kanpur (July 2014– Nov 2014)

Teaching Assistant in Department of Mechanical Engineering, Indian Institute of Technology Kanpur for the following courses (Dec 2011– July 2018)

• ME 778: Engineering Acoustics and its Control

• ME 727: Composite materials