A5064536937- Biomimetic flight and propulsion mechanisms
- Optical measurement and interference techniques
- Structural Health Monitoring Techniques
- Aerospace Engineering and Energy Systems
- Advanced Vision and Imaging
- Fish Ecology and Management Studies
- 3D Surveying and Cultural Heritage
- Infrastructure Maintenance and Monitoring
- Micro and Nano Robotics
- Mechanical Behavior of Composites
- Remote Sensing and LiDAR Applications
- Image Processing Techniques and Applications
- Physiological and biochemical adaptations
- biodegradable polymer synthesis and properties
- Advanced Measurement and Metrology Techniques
- Industrial Vision Systems and Defect Detection
- Aeroelasticity and Vibration Control
- Image and Signal Denoising Methods
- Force Microscopy Techniques and Applications
- Nanocomposite Films for Food Packaging
- Structural Engineering and Vibration Analysis
- Advanced Cellulose Research Studies
- Color Science and Applications
- Composite Material Mechanics
- Thermography and Photoacoustic Techniques
Indian Institute of Technology Madras
2024-2025
Chaoyang University of Technology
2020-2023
Indian Institute of Technology Kanpur
2014-2021
A high-speed 3D digital image correlation (DIC) setup is developed and coupled with an FPGA-based real-time operating system (RT-FPGA) for dynamic testing of light flexible structures. An in-house program using MATLAB. This validated a virtual stereovision created in AUTODESK 3DS MAX to simulate translating rotating plate generate synthetic images. experimental designed fabricated mount the cameras at precise relative locations orientations. The 3D-DIC technique by comparing it laser...
The aim of the present work is development and modal analysis hummingbird inspired MAV flapping wings. Carbon nanotubes (CNTs)/epoxy nanocomposite chosen as material for wing fabrication. has been developed characterized using dynamic mechanical analyzer its viscoelastic properties. Wing designing done by obtaining data points from 2D full-flexed giant image digitizer. fabrication wings molding manufacturing technique. mold made out Perspex sheet laser engraving machine. Modal performed in...
DIC-Wavelet technique for vibration based structural damage identification in dragonfly wing structure is reported. A bio-mimicked wing, stiffened and unstiffened plate made of MWCNT-PP nanocomposite skin Carbon-fibre epoxy composite stiffener are developed. Modal frequencies mode shapes intact samples obtained using well known Digital image correlation technique. Artificial cracks created plates wings at stigma nodus. Wavelet analysis applied on displacement data discretized surface DIC...
Abstract Large birds have evolved an effective wing anatomy and mechanics, enabling airborne mastery of manoeuvres endurance. For these very reasons, they are difficult to replicate study. The aim the present work is achieve active articulations mimic natural bird flapping towards efficient agile Unmanned Aerial Vehicles (UAVs). proposed design, bio-mimicking black-headed gull, Larus ridibundus , has three independent servo-controlled joints at shoulder, elbow wrist complex controls....
While developing a novel digital image correlation (DIC)-based NDT method, one has to integrate an automatic and robust feature detection method with the DIC technique. Several studies in past employed various algorithms such as SIFT, SURF BRISK for initiation purposes. However, our study shows that performance of available is subjected interest from particular field experiment. Therefore, selection essential step towards accurate efficient processing. We have developed methodology applies...
The present study is based on performing 3D vibrations studies of large structures using digital image correlation (DIC) technique. A 3D-DIC setup developed for measuring in-plane and out-of-plane displacements as well natural frequencies a vibrating (small to scale). DIC first validated with laboratory experiments. indoor lab experiment the application in pure displacements. translations have been carried micrometer Vernier caliper, respectively. able accurately measure these static With...
The present study is based on developing a novel in-house BRISK-DIC methodology to identify and correlate natural patterns perform 3D vibration studies of large structures such as wind turbines. method includes identifying using the BRISK (Binary Robust Invariant Scalable Keypoints) algorithm its integration with an 3D-DIC for measurement in-plane out-of-plane displacements. stereo-calibration performed calibration technique that uses IMU sensor Laser Measure extrinsic parameters...
Unmanned Aerial Vehicles (UAVs) are the aircraft which controlled remotely or autonomously. They can be characterized on basis of type wings used, namely fixed, flapping and rotary wing UAVs. used for various military civil applications. Present study is focused Natural fliers master flight taken as inspiration developing an efficient UAV model. In this a system, inspired from Black Headed Gull, developed tested its kinematic aerodynamic characteristics. Like original biological structure,...
The biomimicking and understanding of the dynamics insect flyers is important in developing agile efficient MAVs. present study based on development dragonfly inspired MAV investigation its motion characteristics. Initially, a tethered two-winged model constructed, composing two flapping wings, mechanism, chassis, an external power supply with function generator. wings are fabricated composite stiffeners membrane. material consists carbon nanotubes (CNTs)/polypropylene (PP) nanocomposite low...
An automatic lightweight feature detection algorithm is developed to perform real-time structural health monitoring (SHM) of large structures. The works on the specified region interest (ROI) and applies canny edge with k-means clustering for identifying displaced pixel location in an image sequence. detected edges (white pixels) selected ROI first validated then given as input centroid calculation. movement tracing method by simulation, indoor digital micrometer experiment outdoor field...
Abstract This work investigates the role of flexibility and resonant excitation on deformation mechanism aerodynamic performance flapping wings. A hummingbird-inspired wing (HIW) is considered designed to have a bone-like stiffener made carbon fibre/epoxy (CF/E) composite attached membrane nanotubes/polypropylene (CNTs/PP) nanocomposite representing flexible part natural wing. The HIW model analysed through fluid-structure interaction simulations performed at frequencies near frequency. It...
Natural flyers are the best source of inspiration for making successful MAVs. Hummingbirds known their excellent flight characteristics such as long duration hovering, backward flying, high agility, etc. Giant hummingbird is chosen bio-inspiration designing wing. Wings required to be light, strong, and fatigue resistant used MAV applications. Carbon nanotubes (CNTs)/Polypropylene (PP) composite wing membrane material whereas carbon fiber (CF)/epoxy (E) frame. Two types wings fabricated, one...
Flapping wing micro air vehicles (FWMAVs) are small unmanned aircrafts or flying robots which intended to be used for surveillance, reconnaissance, biochemical sensing, targeting, tracking, etc.To perform such missions, MAVs required do some specific operations as hovering; slow and high speed flying; quick landing take-off, etc.During flapping motion through surrounding air, wings experience inertial aerodynamic forces.For making successful flights in conditions, must have properties...