Dr. SHARNAPPA
E-mail: Mobile No: +91-8884555351
Summary of Experience and Proficiency:
Ø Total 7 years 6 months of experience in Industry and Teaching. 6 years 6 months in the field of Stress Analysis in Aerospace and Industrial projects and 1 year in Teaching.
Ø Two years worked in UK on composite testing of Aircraft components.
Ø Experience in the field of Static analysis, Fatigue analysis and modal analysis of Composite Nacelle parts such as Thrust reverser components, Inner Fixed Structure (IFS), Outer Fixed Structure (OFS), Aft cascade ring, Bulkhead, Aft-cover, Ramp fairing, Bumpers and Draglink fittings, , using PATRAN, NASTRAN and Hand calculation.
Ø Experience in the field of Composite Testing using ASTM Standards, LAP. (Inlet Inner barrel material qualification tests)
Ø Experience in the field of dynamic analysis using LS-Dyna, Hyper mesh. (Bird strike analysis, FMCG projects).
Ø Ability to communicate effectively at all levels, interact supportively within a team environment and passion about the research projects.
2005- 2008 Doctor of Philosophy, Machine Design (Mechanical engineering),
Indian Institute of Technology Madras. (I.I.T.M)
Chennai - 600036, Tamil Nadu.
CGPA: 9.5/10.00
2001- 2003 Master of Technology, Advanced Manufacture Engineering
(Mechanical engineering),
N.I.T.K Surathkal (Formerly KREC)
Percentage: 79.22
1996-2000 Bachelor of Engineering, Mechanical Engineering,
S.L.N.C.E Raichur, Gulbarga University, Karnataka.
Percentage: 68.42
GATE-2001 85.91 Percentile
Professional Experience
1. August 2012 to Till Date
Designation : Lead Stress Engineer
Company : QuEST Global Engineering Pvt Ltd, Bangalore, India.
2. August 2010 to August 2012
Designation : Senior Stress Engineer
Company : QuEST Global Engineering Pvt Ltd, Bristol, UK.
3. August 2008 to August 2010
Designation : Stress Engineer
Company : QuEST Global Engineering Pvt Ltd, Bangalore, India.
4. August 2003 to Dec 2004
Designation : Lecturer (Contract)
Organization : National Institute of Technology, Surathkal, Karnataka, India.
Job profile/Projects Handled:
· August 2012 – Till Date, QuEST, Bangalore, India (UTC Aerospace, Local onsite) .
Project: Airbus A350 - Thrust Reverser Outer Fixed Structure and Inner Fixed Structure.
Location: UTC Aerospace, Bangalore, India (Local onsite).
Static, fatigue and Modal analysis of Composite Thrust reverser Components such as Bulkhead, Aftcover, Rampfairing and Aft cascade ring, and Inner fixed structure components such as composite bond panel are carried out using PATRAN, NASTRAN, and HYPERSIZER.
Tasks performed:
•In-plane strength check of composite panel using Tsai-Hill and ILS criteria.
•Fatigue strength check of composite panel using Strain1 and Strain2 criteria.
•Fastener Bearing and pull through check at attachments to composite panel.
•Stress Report preparation.
Project: Bombardier C-Series - Thrust Reverser Inner Fixed Structure.
Location: UTC Aerospace, Bangalore (Local onsite).
Static and fatigue analysis of Inner fixed structure components such as composite bond panel, bumpers and draglink fittings carried out using PATRAN, NASTRAN, MATHCAD and LIPSAS, Hypersizer.
Tasks performed:
•Composite analysis of thrust reverser Inner Fixed Structure.
•In-plane strength check of composite panel using modified Tsai-Wiu criteria.
•Composite panel close-out analysis.
•Core strength analysis.
•Fastener Bearing and pull through check at attachments to composite panel.
· August 2010 – August 2012, QuEST, UK (GKN Aerospace, IOW,UK).
Project: Material Qualification of Inlet Inner Barrel.
Duration: August 2010 – March 2012.
The material qualification of baseline one piece inlet inner barrel consists of four test plans. The material allowable are determined from three point bend test, four point bend test, 3rail shear test, compression test, tension test, shear test and production control tests.
Test plan 1: WAMS 51-11 Woven Carbon PrePreg 'Out of Auto Clave' Curing.
Test plan 2: WAMS 51-12 Acousti Cap Honeycomb
Test Plan 3: Perforated Laminate Material Knock Downs for WAMS51-03
Test Plan 4: Joint strength test plan
· August 2010 – August2012, QuEST, UK (GKN Aerospace, IOW,UK).
Project: Concessions.
Duration: August 2010 – March 2012.
Concession is done for EA1, EA2 and EA3 programme on various parts of nacelle such as Outer fan duct, inner fan duct, fan cowl door, inlet lip, outer and inner barrel, etc using PATRAN, NASTRAN, MATHCAD, LAP.
EA1: Challenger 300 Aircraft, Honeywell Engine HTF7000 series.
EA2: Gulf Stream 250/280 Aircraft, Honeywell Engine HTF7000 series.
EA3: Embraer 450/500/550 Aircraft, Honeywell Engine HTF7000 series.
· August 2010 – August2012, QuEST, UK (GKN Aerospace, IOW,UK).
Project: First Part Qualification Tests.
The First Part Qualification test on various aircraft parts written and the details are listed below. In these test plan mainly covers the production control tests and flexural strength tests.
a. Upper fan cowl door.
b. Hoop stiffener of fan cowl door
c. Access panels of fan cowl door
d. BMI (Bisimalemide) Heat shield (which protects the FCD from TAI PRSOV)
e. Aft Bulk Head
f. Inlet Outer skin (Outer Barrel)
g. Generator Duct (which connects NACA duct to Aft Bulkhead)
h. IFD (Inner Fan Duct) FWD panel
i. Inlet Inner Acoustic Barrel
· August 2008 – August 2010, QuEST, Bangalore.
Project Title: Bird strike impact on aero engine blades
The simulation of bird strike impact on aero engine blades is carried out by using LS-Dyna. ALE (Arbitrary Lagrangian and Eulerian) method is used to simulate the bird impact, this method is used by assuming a simple finite element model which involves a gelatin ball (representing the bird) impacting rectangular titanium plate at 275 m/s. the plate is constrained at one edge and the ball is impacted at 3 different angles (90, 45 and 20 degrees) on the free edge of the plate. The simulation was able to capture the deformation and splitting of the gelatin ball similar to the actual bird strike case.
Project Title: Pace Unscramblar
The unscrambling is a common process involued in the FMCG (Fast Moving Consumer Goods) plants, where bulk random bottles are picked, put in vertical position and aligned ready to be conveyed to feed the packing line. The simulation is carried out using LS-Dyna and the meshing of the components is done using HYPER MESH 10.0. Simulation predicting the smooth movement of bottle in the separation stage and hook transformation stages. The simulation of bottle movement exactly follows the practical case of the unscramblar process. The plastic strain and stress appears in the bottle are within the permissible limit of the unscramblar process.
Core subjects studied
1. Applied Finite Element (FEM)
2. Composite materials
3. Theory of vibrations
4. Theory of Shells
Soft Skills
1. CAE Software PATRAN, NASTRAN, LS-Dyna, HYPERMESH. HYPERSIZER, BRAVA READER
2. Programming LAP, LIPSAS, FORTRAN. STAT17- MIL HDBK.
3. Presentation Skills MS WORD, MS Power Point, MS Excel, MathCAD
4. Operating Systems MS Windows 98/2000/XP.
Publications:
International Journals:
1. Sharnappa, N. Ganesan and Raju Sethuraman “Buckling and Free Vibrations of Sandwich General shells of Revolution with Composite facings and Viscoelastic core under Thermal Environment using Semi-analytical Method.” Computer modeling in engineering and Science.2007; Vol. 18(2): pp.121-144.
2. Sharnappa, N. Ganesan and Raju Sethuraman “Dynamic modeling of active constrained layer damping of composite beam under thermal environment.” Journal of Sound and Vibration.2007; Vol. 305:pp.728-749.
3. Sharnappa, N. Ganesan and Raju Sethuraman “Thermally induced vibrations of piezo-thermo-viscoelastic composite beam with relaxation times and system response.” Multidiscipline Modeling in Materials and Structures,2010; Vol. 6 Iss: 1, pp.120 - 140.
4. Sharnappa, N. Ganesan and Raju Sethuraman “Buckling, Free Vibration analysis of magnetic constrained layer damping (MCLD) beam”, Finite Elements in Analysis and Design, 2009; Vol. 45(3): pp.156-162.
5. Sharnappa, N. Ganesan and Raju Sethuraman “Buckling and Free vibration of Isotropic Viscoelastic core Sandwich General shells of Revolution under Thermal Environment.” International Journal of Engineering Science.
6. Sharnappa, N. Ganesan and Raju Sethuraman “Buckling, Free Vibration and Damping analysis of PEEK/IM7 Composite Sandwich Shells of Revolution under Thermal Environment” Journal of Sandwich Structures and Materials.
International Conferences:
1. Sharnappa, N. Ganesan and Raju Sethuraman “Vibration damping of composite cylindrical shells with er/mr and viscoelastic core using FEM” International Conference on Recent Developments in Structural Engineering (RDSE- 2007) Manipal Institute of Technology (MIT), Manipal, India, Aug 30 - Sept 1, 2007.
2. Sharnappa, N. Ganesan and Raju Sethuraman “Free vibration analysis of sandwich hemi-spherical shells with constrained electro-rheological fluid damping.” 14th International Congress on Sound and Vibration (ICSV14) Cairns, Australia, July 9-12, 2007.
3. Sharnappa, N. Ganesan and Raju Sethuraman “Free vibration analysis of truncated sandwich conical shells with constrained electro-rheological fluid damping.” 8th International Conference on Vibration Problems (ICOVP07) BESU, Shibpur, India. January 30-February 3, 2007.
4. Sharnappa, N. Ganesan and Raju Sethuraman “Dynamic analysis of orthotropic clamped-free cylindrical shells with constrained electro-rheological fluid damping.” 2nd International Congress on Computational Mecchanics and Simulation (ICCMS06),IIT Guwahati 8-10 December 2006.
5. Sharnappa, N. Ganesan and Raju Sethuraman “Modeling of ACLD cantilever composite beam under thermal environment.” International Conference on Computational and Experimental Engineering and Mechanics (ICCES-05), IIT Madras, India, 1-6 December 2005.
6. Sharnappa, N. Ganesan and Raju Sethuraman “Dynamic analysis of coupled piezo-thermo-viscoelastic composite beam with two relaxation times and system response.” International Conference on Computer Aided Engineering (CAE-07), IIT Madras, India, 13-15 December 2007.
7. Sharnappa, N. Ganesan and Raju Sethuraman “Free vibration and thermal buckling of layered cylindrical shell with constrained viscoelastic damping using 3D theory.” International Conference on Computer Aided Engineering (CAE-07), IIT Madras, India, 13-15 December 2007.
8. Sharnappa, N. Ganesan and Raju Sethuraman “Study on damping behavior of ER/MR and composite/viscoelastic sandwich conical shell using semi-analytical method.” International Conference on Theoretical, Applied, Computational and Experimental Mechanics (ICTACEM-2007), IIT Kharagpur, India, 27-29 December 2007.
9. Sharnappa, Sandesh S, and S M Kulkarni. “Strength and failure analysis of cenosphere foam cored glass skin sandwiches” 36th International SAMPE technical conference, Nov 15-18, 2004, San Diego, California.
10. Sandesh S, Sharnappa and S M Kulkarni. “Bending strength of cenosphere foam cored jute/glass skin sandwiches” 36th International SAMPE technical conference, Nov 15-18, 2004, San Diego, California.
Ph.D. Dissertation:
Title: Buckling and dynamic behavior of sandwich beam and shell structures under thermal
and magnetic environments.
Description: Research work deals with the vibration, damping and buckling analysis of sandwich structures (beam and axisymmetric shell) under magnetic and thermal environments using finite element method (FEM). FORTRAN code is developed and is validated with commercial finite element package ANSYS and available literature. The coupled piezo-thermo-elastic problem is solved for beam and axi-symmetric shell structures. The influence of fiber orientation, temperature and magnetic field on variation of frequency and loss factor is analyzed. In addition, the relative influence of a structural damping of composite material, passive damping of viscoelastic material and active damping are analyzed.
Research topics:
· Dynamic behaviour of an Active Constrained Layer Damping (ACLD) composite beam under thermal environment.
· A thermally induced vibration of piezo-thermo-viscoelastic composite beam with relaxation times and system response is obtained.
· Study on dynamic analysis of sandwich structure with viscoelastic core for general shells of revolution under thermal environment.
· Buckling and vibration behavior of sandwich viscoelastic beam and shell under magnetic environment.
M. Tech Project:
Title: Characterization of cenospehere foam cored sandwich composites for mechanical
Properties.
Description: The project involves the preparation of particulate composites using cenosphere fly ash particles as filler in epoxy. The filler particle surface is treated chemically using a Silane-coupling agent to improve the compatibility with the matrix. The compressive properties of these are compared with untreated cenosphere fly ash particles and results are analyzed with scanning electronic microscope (SEM). The primary study involves the preparation of foam cores and testing them for specific strength in compression and bending tests. The secondary study involves the preparation of glass skin sandwiches with cenosphere foam cores and these are tested for specific strength in compression and bending and these properties are compared with cores.
Extracurricular activities
Hobbies/Library Activities: Listening to classical and devotional songs, Reading.
Sports and Games : Cycling, Running, Shuttle badminton.
Personal Profile
Father’s Name Amareshappa
Marital Status Married
Date of birth 1st June 1977
Languages Known English, Hindi, Kannada, Telugu.
Strengths
¨ Fast learner
¨ Adaptability and Flexibility
¨ Good analytical and experimental skills
(Permanent): s/o Amareshappa Joladarashi (Present): Dr. Sharnappa
Joladarashi building, Gvt Road House no 344, II floor
Sindhnur-584128, C/o Lakshmi enterprices,
Raichur (Dist), 7th cross, 24th main,
Karnataka (State) Agara (P.O),
Bangalore – 34, Karnataka.
Reference:
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Declaration:
I hereby declare that the above written particulars are true to the best of my knowledge and belief.
(Sharnappa)