Research Areas
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Composites
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Mechanical joints
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Thin shells
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Fracture mechanics
Material characterization
DCB testing of CFRP laminates
MMB testing of CFRP laminates
Associated student: Whole group
Repair mechanics
Specimen geometry studied: (a) open cutout panel (b) repaired panel (c) single sided panel and (d) double-sided panel ( all dimensions are in mm)
Associated student: Mr Matta Seshadri
Stiffened panel buckling
Single blade stiffened CRRP panel end block fabrication (a) Fixture used for potting end blocks (b) finished panel
Experimental setup involving 3D-DIC, AE, strain gauges, LVDT and high speed camera
Associated student: Mr. Naresh Reddy Kolanu
Fractography studies
Failure micrographs of the specimen obtained at diffrent magnifications captured using the digital microscope
Failure mechanism observed on the top surface of the specimens. a. Failure on the top surface of specimen-1 b. Failure on the top surface of the specimen-2 c. Delamination failure between 0/45 (2nd and 3rd plies ) interface.
Multiaxial loadings
Schematic of specimen loaded with Arcan fixture
Associated student: Mr Mahesh Podishetty
Experimental setup for multiaxial loading
Damage modelling
Single blade stiffened CRRP panel end block fabrication (a) Fixture used for potting end blocks (b) finished panel
Experimental setup involving 3D-DIC, AE, strain gauges, LVDT and high speed camera
Associated student: Mr. Naresh Reddy Kolanu
Composite bolted, bonded and hybrid lap joints
Schematic of bolted, boned, and micro hybrid joint
Associated student: Mrs Isha Paliwal
Damage surface analysis with digital microscope
FE damage modelling
Adhesive scarf and stepped joints
Schematic of scarf joint and stepped joint
Normal and shear strain contours from 2D DIC
Associated student: Mr Matta Seshadri, Mr Hetram Sonwani
Radial Flight Intersection joints in launch vehicles
Schematic of radial flight intersection (FIJ) joint
Associated student: Mr Rashmiranjan Mohapatra
Sectional view of a radial FIJ with countersink screw
Loading and deformation contours
Buckling of shells: metals and composite
Deformation contours from multi DIC system
Associated student: Mr Vineet Ravulapalli
Schematic of shell under compression
Prepared specimen and experimental setup
Buckling of 3D printed shells
3D printed shell a) Onyx b) TPU
Deformation contours for multi DIC system
Measurement of geometric imperfections
Digital twin of shell using laser scanner
Measured imperfection signatures
Crack tip study
Isoclinic Phasemap
Isochromatic Phasemap
Associated student: Mr PratapRao Patil
Dark Field
Inclusion study
Isoclinic Phasemap
Isochromatic Phasemap
Associated student: Mr Jobin T Mathews
Data Collection: 2 – 10 mm , Fringe No: 0.5, 1, 1.5, 2, 2.5, 3
Debonded inclusion
Isochromatic: White light Source
Associated student: Mr Jobin T Mathews
Isochromatic: Monochromatic light Source
Rigid curved inclusion
Dark Field
Bright Field
Isoclinic Phasemap
Isochromatic Phasemap
Associated Student: Mr Swapnil Patil
Material Characterization
U Displacement
V Displacement
Material Characterization using 3D DIC.
High temperature material testing involving 3D DIC.
Whole field Strain analysis using Digital Image Correlation
(2D and 3D)
Composite Repair and Fatigue Life Estimation
Composite repair study of Al/CFRP and CFRP/CFRP panels
involving experimental and numerical techniques.
Fatigue and Fracture study of Composite material involving experimental and numerical techniques.
Damage Mechanics.
Optical Methods
Orthodontic study involving Digital Photoelasticity.
Bimaterial Interface study involving digital photoelasticity.
Interacting crack study involving experimental and numerical techniques.
Study of interaction of Crack tip stress field with an inclusion.