Embedded Files
Applying Pulse Wave Inverse Problem (PWIP) augmented by Physics-Informed Neural Network (PINN) to assess vascular walls with atherosclerotic plaques (Simulation and Phantom Study). Details are at https://doi.org/10.1016/j.ultrasmedbio.2025.09.012
Extending the above PWIP+PINN framework to in vivo human clinical study involving both healthy subjects and patients with known cardiovascular diseases. Details are at https://doi.org/10.21203/rs.3.rs-10280788/v1
3D Finite-Element Simulation (using LS-Dyna) and breast tumor mimicking Phantom (CIRS Breast Phantom) studies with Pulsed Shear Wave Elastography (PSWE) and multi-frequency Harmonic Shear Wave Elastography (HSWE). The following animations show representative cases. Details are at https://doi.org/10.1016/j.jbiomech.2025.112886
PSWE_simulation.mp4PSWE in 3D Finite-Element Study
PSWE_phantom.mp4PSWE in Phantom Study
HSWE_simulation.mp4HSWE in 3D Finite-Element Study
HSWE_phantom.mp4HSWE in Phantom Study
Postdoctoral Research Scholar
Postdoctoral Research Scholar
(Aug 2021 - Jan 2023)
Supervisor: Dr. Murthy Guddati
North Carolina State University, USA
Extending the Arterial Dispersion Ultrasound Vibrometry (ADUV) framework which was developed during my PhD research to in vivo human clinical study. Details are at https://doi.org/10.1016/j.ultrasmedbio.2024.09.023
Arterial viscoelasticity estimation using the ultrasound shear wave elastography data in frequency-wavenumber domain yields robustness and reliability compared to viscoelasticity estimation in the space-time domain. Details are at https://doi.org/10.1016/j.ultras.2026.108204
Executed data processing and estimated arterial shear moduli from the SWE experiment performed on the ex vivo porcine aorta at Mayo Clinic
Received experience in SWE and other ultrasound modality experiments
Graduate Research Assistant (Ph.D. Research)
Graduate Research Assistant (Ph.D. Research)
Guided Wave Inversion for Arterial Stiffness Estimation
(Summer 2017 - Summer 2021)
Advisor: Dr. Murthy Guddati
North Carolina State University, USA
Guided wave modeling in varying geometry - a) thin-layered plate, b) axis-symmetric tube, and c) non axis-symmetric tube for ultrasound shear wave elastography. Details are at https://doi.org/10.1121/10.0003430
Phantom study of ultrasound shear wave elastography for vascular structure. Details are at https://doi.org/10.1088/1361-6560/ac01b7
Full wave simulation of the axis-symmetric vascular structure under the ultrasound shear wave elastography. Details are at https://doi.org/10.1016/j.compbiomed.2022.106021
ArterySWE.aviArterial visco-elasticity estimation in space-time domain for Kelvin-Voigt and Spring-pot fractional rheological models. Details are at https://doi.org/10.1088/1361-6560/acba7a
Rheological model: Kelvin-Voigt
Rheological model: Spring-pot Fractional
Graduate Research Assistant (M.Tech Thesis)
Graduate Research Assistant (M.Tech Thesis)
Meso level discrete element modeling for localized failure in concrete
(Summer 2013 – Spring 2014)
Advisor: Dr. Arghya Deb
IIT Kharagpur, India
Developed a framework based on discrete element modeling for localized failure in concrete
Modeled aggregates as a discrete arbitrary shaped rigid body
Simulated dynamic packing of the assemblage of aggregates as the free fall of the aggregates following Newtonian Dynamics using the Discrete Element Model (DEM)
Incorporated cohesive constitutive behavior in the DEM model and then calibrated interfacial stiffness as a part of material modeling of concrete based on strain energy
Incorporated fracture energy-based damage constitutive behavior allowing both un-coupled damage as well as coupled damage
Performed load controlled and displacement controlled (numerical) tests on concrete cubes for evaluation of global response and obtaining crack patterns
Studied the effect of meso level geometric parameters like size, angularity, and flakiness on the macroscopic response of concrete
Academic Project
Academic Project
MATLAB GUI Application
MATLAB GUI Application
Development of GUI tool to streamline the data processing and inversion for Shear Wave Elastography data
(Summer 2020)
Advisor: Dr. Murthy N. Guddati
North Carolina State University, USA
Screenshot of the GUI tool
B.E. Project
B.E. Project
Wind effects on tall buildings
(Summer 2011 - Spring 2012)
Advisor: Dr. Sujit K. Dalui
BESU, Shibpur, India
Experiments done on model structures of square and octagonal shaped plan in Wind Tunnel Laboratory, IIT Roorkee, for finding the coefficient of external pressure (Cp) at different points over the structures
Study of the variation of Cp using contour plots in SURFER
Study the response quantity of the model for both ‘along wind’ and ‘across wind’ directions under isolated condition
Independent Project
Independent Project
Size effect study for concrete using concrete damaged plasticity model
(Spring 2013)
Advisor: Dr. Arghya Deb
IIT Kharagpur, India
Implementation of concrete damaged plasticity model in ABAQUS
Size effect study for concrete cylinders with height to diameter ratios as 2, 4 and 6
Size effect study of concrete using 3-point bending test for a single notched beam with size ratios as 1:1, 1:2, 1:4, 1:8
Study of shear band formation and mesh dependent response of concrete
Industrial Project
Industrial Project
Project 1
Project 1
Structural analysis of Wind Turbine structures
(Mar 2015 – Jun 2015)
Indian Register of Shipping (IRCLASS), India
Implementation of Excel VBA interface tool for input files generation for FAST (Fatigue Aerodynamic Structure Turbulence) module developed by NREL (National Renewable Energy Laboratory), USA
Determination of aerodynamic loads & responses on wind turbines
FEM modeling of the wind turbine blade in ANSYS using the NUMAD tool developed by Sandia National Laboratories & then FE analysis which includes modal analysis, buckling analysis, static & transient analysis
Validation of the natural frequencies, tip displacements, blade root shear force and bending moments with the results presented in FAST module
Project 2
Project 2
Capability Development for Reliability analysis of fixed offshore jackets
(Dec 2014 – Sep 2015)
Indian Register of Shipping (IRCLASS), India
Study of the fixed offshore structures e.g. Jacket structures and its different parts along with the structural analysis as per the API – WSD and ISO:19902-2007 codes
Pushover analysis in ANSYS Mechanical FE Package for determination of collapse load
System based reliability analysis accounting different uncertainties in hydrodynamic parameters and geometric & material properties of the Jacket structure
Determination of the Reserve Strength Ratio (RSR) which is the first step towards the life extension of the existing jacket structures
Member importance study in order to account the difficulties accessing the structural details which is below the mean sea level during inspection
Project 3
Project 3
Reliability Based Inspection Planning for ship structures
(Jul 2014 – Nov 2014)
Indian Register of Shipping (IRCLASS), India
Implementation of Fracture Mechanics (FM) based semi-elliptical crack growth model using the Paris equation
Development of the regression equation to make the fracture mechanics based model computationally more efficient for the further analysis
Calibration of FM model with conventional S-N curve based model & then inspection planning using Bayesian Updating scheme
Validation of the model with the published results by ABS & one case study for existing oil tanker
Parametric study with different inspection strategies containing NDT & visual inspections along with the cost benefit analysis
Project 4
Project 4
Tool development for shaft alignment in ship structures
(Jul 2014 – Oct 2014)
Indian Register of Shipping (IRCLASS), India
Implementation of Finite Element (FE) based codes in Matlab for beam element analysis using Euler-Bernoulli beam model and Timoshenko beam model
Development of FE based tool for the shaft alignment analysis in ship structures in MS EXCEL VBA Macro
Validation of the tool with several case studies of shaft alignments in oil tanker, bulk carrier & LNG carrier
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