PROJECTS
Dynamic Response of Aluminum and Steel Cylindrical Shells. | Jan/2016 - Present
· Undergoing studies on the Dynamic Response of Aluminum and Steel cylindrical Shells by Acoustic excitation.
· System is setup in a reverberation chamber, and analysis is done using Bruel&Kjaer Pulse Multi-Analyzer System Type 3560C.
· Numerically modeled and analyzed the experiment in ANSYS and MSC/Nastran and Patran for comparison with the experimental results.
· Aim of the research is analyzing the behavior (coupled frequency, modal analysis, pressure levels, ring and critical frequency, transmission loss, damping) of the thin-walled shells when it is coupled with fluids.
· Research focuses on analyzing the weak coupling as in air and the contribution of coupling to circumferential and axial modes and when the frequency of the structure comes very close to the longitudinal mode of fluid in the tube.
· Defining a coefficient to predicting the coupled frequency of the cylindrical shells with the fluid based on the natural frequency of the structure.
Stress Intensity Factors for Mode-I and Mode-II fracture | Mar/2016 - May/2016
· Evaluated the Stress Intensity Factors for Mode-I and Mode-II fracture in ANSYS for cracked Bodies of different geometries and with the different boundary conditions.
· Analyzed the SIF as a function of – 1) Displacement; 2) Stress; 3) J-Integral. And compared results of these methods in Excel.
· Plotted & compared the results of these methods in Excel.
· Concluded that stress methods are prone to errors at the vicinity of the crack tip.
Design of Stability-Boom - ANSYS-APDL Design of linkage system - ANSYS -WORKBENCH |
Mar/2016 - May/2016
· Built the conceptual model of the system.Determined the required dimensions for the structure by numerous iterations to have a feasible stresses and displacement for the given material properties, geometries (cross sections) and loads for the a given factor of safety. Came up with appropriate geometrical modifications to overcome the stress concentration in the structure.
Research
Fracture Mechanics
Finite Element Method
Non-Destructive testing
NDT APPROACHES TO EVALUATE THE DEFECTS IN ADHESIVE BONDS AND COMPOSITIES|
Oct/2015 - Dec/2015
·Evaluated The surface and off surface Defects In Adhesive And Composites by different Nondestructive testing methods
·Nondestructive testing equipment used: 1) Ultrasonic machine (pulsed eco mode of testing) 2) Radiography 3) IR camera (Active pulsed thermography).
Under-Graduate Project
Development of Digital Hydraulic Valve|
Mar/2013 - Jun/2014
·Developed and Analyzed a Digital Hydraulic valve powered by stepper motor which is programmed using a microcontroller to monitor the spool movement.
·Fluid discharge and vibration of the system at the links was measured at different openings of the valve to compare with the convectional valves and got the coherent results.
·This system was simulated in MATLAB for analysis.
Experimental Mechanics
Mechanical Characterization of a Material - Strain Gauge Technique
Feb 2017 – Mar 2017
Project description
Strain gauges were mounted (Full Bridge and Quarter Bridge configurations) on a cantilevered beam for obtaining experimental data. The displacement signals were plotted to obtain the mechanical characteristics of the given material under the following loading:
- Static Loading - Young's Modulus and Poisson's ratio were calculated from the plot and verified.
- Transient Mode I Vibration - Frequency of Vibration, Logarithmic Decrement, were plotted to verify the Natural frequency and Dynamic Poisson's ratio of the cantilever beam.
Experimental Stress Analysis on Photoelastic Material - Photoelasticity
Mar 2017 – Apr 2017
Project description
Photoelastic material - Polycarbonate, Specimens with notch and hole were subjected to Far-field uniaxial tensile load and 4-point loading and the stress distributions at the were visualized and analyzed by following observations :
- Mapping Isoclinic fringes
- Mapping Isochromatic fringes and fringe order
- Finding experimentally, the tangential stress values
- Finding experimentally, the stress concentration factors at the point of interest.
- Measure material fringe constants under different loading conditions
Photo Elasticity