Disha Roy

Mechanical Engineer

A dedicated and adaptive mechanical engineer with over 2 years of experience in product design & development by applied research, aiming to secure a position, where I can present and implement innovative-manufacturable design ideas. Team spirited with effective communication and presentation skills.

Work Experience

Mechanical Research Engineer

Raphe mPhibr Pvt. Ltd.

22nd July 2019– 9th December 2020

Worked on the Research and Development of UAVs, A-Z design of multiple UAVs (multi-rotor and fixed wing VTOL)

• Designed (on SOLIDWORKS, CATIA and Autodesk Fusion 360): -

• Entire multi-rotor UAV frames with interiors and carried out component level design based on mechanical & aerodynamic analyses and integration of electrical components for complete assembly of the UAV.

• Hoerner Tip winglet to reduce the induced drag in a fixed-wing VTOL aircraft.

• Electronic boxes, casings, and remotes for electronic equipment for onboard and GCS.

• Rugged Landing Gears based on Bio-mimetics for rough and uneven terrains, payload delivery mechanisms for UAVs.

• Surveillance-based camera holder mechanisms for UAVs.

• Executed structural, thermal and vibration analyses of Carbon Fibre structural members

(wing, landing gear, fuselage, frame) using ANSYS.

• Worked on CG calculations for a high endurance engine-based Hybrid electric UAV, fixed wing VTOL aircraft and multi-rotor UAVs

• Created an exhaustive excel based calculator for initial sizing of a highly power efficient fixed-wing VTOL aircraft.

• Developed renderings for the User Manuals of the above-mentioned UAVs using SOLIDWORKS Visualize.

• CNC Manufacturing Design of ceramic epoxy tooling board and carbon fibre moulds for parts manufacturing.

• Operated CNC machine tools (STEPCRAFT, HAAS, AUTOMETRIX)- for machining UAV parts, optimized these processes for minimal waste of raw materials.

• Developed G-Codes for CNC machining of parts using AUTODESK FUSION 360, MASTERCAM, PatternSmith software.

• Experience in Composite Engineering & Manufacturing processes like Resin Infusion, light- weight aerospace grade sandwich composite fabrication, pre-preg composite manufacturing, hand-layup of composites and out of autoclave curing processes.

• 3-D Printing: Manufactured Parts and Prototypes post designing parts on 3-D Printers such as MakerBot, Stratasys, Markforged using software such as GrabCAD, MakerBot Print, Eiger 3D Printing.

Mechanical Intern

Denso India Pvt. Ltd.

July 2018 - August 2018

Intern of Purchase Department under Business Planning

• Was trained on sheet metal part manufacturing, including in-house processes like forging, casting and cold working to produce pinions, boss rotors and core rotor poles.

• Created purchase orders and basic purchase agreements, performed vendor rating, costing, and calculated some of the key financial ratios.

• Assisted in new parts development process while following safety procedures on shop floor. Contact Details

Address:

Greater Noida, Uttar Pradesh,

201306

Phone:

+91-820*******

+91-776*******

Email:

adk9vr@r.postjobfree.com

LinkedIn:

https://www.linkedin.com/in/disha

roy1997/

Software

CATIA

SOLIDWORKS

Autodesk Fusion 360

AutoCAD

ANSYS

ANSYS Fluent

Simulink

MATLAB

Mastercam

HAAS Next Gen

UCCNC

WINPC

C++

Microsoft Office

Skills

UAV Design and Manufacturing

Carbon Fiber Composite

Manufacturing

CNC Programming and

Machining (CAM)

Computer Aided Design (CAD)

3D Printing

FEM/FVM

CFD

IC Engines

Personal Skills

French Language

• Performed quality assurance of purchased parts.

• Studied in-depth about the manufacturing of the 4 parts that DNIN produces, Alternator, Magneto, Starter and CDI.

Industrial Trainee

Chambal Fertilizers and Chemicals Ltd.

June 2018 - July 2018

Industrial Trainee of Manufacturing Department under the Ammonia II plant

• Studied the de-sulphurisation of feedstock, steam reforming, gas purification, ammonia synthesis & refrigeration, and ammonia absorption & condensate recovery processes.

• Assisted in the functioning of the control and VFD panel for the plant.

• Learnt about steam governing system, turbine steam governor and lubricating systems.

• Operated on machinery like Lathe, Helical Gear Machine, Grinder and CNC in the workshop.

• Learnt about the compounding of steam turbines and the Carbon Gland Sealing process.

• Studied about the corrosion in pipelines and the cathodic protection method to prevent the same.

Industrial Trainee

DCM Shriram Pvt. Ltd.

December 2017 - January 2018

Industrial Trainee of 38MW Powerplant

• Learnt the in-depth processes of the operation of the Captive 38MW Steam Powerplant- export steam process circuit for the plant, boiler theory, powerplant generation, coal handling plant.

• Created export steam diagrams and heat balance sheets for the steam plant.

• Studied the functioning of the DM Water and Coal Plants.

• Calculated the various boiler, pump, and turbine efficiencies for the Plant.

• Learnt about the processes of the Electronic Precipitators (ESP), Ashing Plant and the Cooling Towers supporting the Plants.

• Learnt about the sealing systems in place for the turbine i.e., the Labyrinth Seal system and lubrication methods.

• Calculated the various losses related to the entire steam cycle of the plant. Key Projects

Dissertation: Investigations of Double Pipe Heat Exchanger (DPHX) for its Performance Improvement using various fin configurations- A Numerical Approach 1st January 2019- 26th May 2019

• Executed the numerical analysis of the DPHX and its validation with experimental & analytical (by LMTD and NTU methods) analyses.

• Designed geometric models for the finned configurations of the DPHX using CATIA and ANSYS Workbench.

• Performed CFD Analyses of DPHX with: - fins in the annulus of double pipe heat exchanger for various fin shapes (circular, triangular, square) then calculated the mass flow rates and compared them to that of the base model, staggered fin arrangements i.e. (for various fin shapes and mass flow rates), addition of fins at the inner surface of the outer pipe for enhancement of thermal performance.

• Carried out comparisons b/w various models using Nusselt’s number & heat transfer coefficient, cold water outlet temperature, pressure drop in annulus, thermal enhancement factor variation and turbulent viscosity ratio.

• Concluded that the circular fin un-staggered configuration was the optimal model, which was then modified to a dual-fin staggered configuration which was the best model w.r.t heat transfer.

Education

B. Tech: Mechanical and

Manufacturing Engineering

Manipal Institute of Technology

Manipal, Karnataka

Graduated with 7.1 CGPA.

12th Grade- CBSE

Delhi Public School, Gurgaon

Gurugram, Haryana

Graduated with 87 Percentage.

10th Grade- CBSE

Indian School Muscat

Muscat, Oman

Graduated with 9.8 CGPA.

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