PORTFOLIO

Ajay Thulasisekar
Mechanical Engineering Student ยท SSN College of Engineering, Chennai
โœ‰ ajay2310166@ssn.edu.in โ˜Ž +91-8667075942 ๐Ÿ“ Chennai, India
Education
B.E. Mechanical Engineering
Sri Sivasubramaniya Nadar College of Engineering (SSN)
Total Quality ManagementDesign of Machine ElementsMetrology & MeasurementsManufacturing Processes I & IICAD & CAMKinematics of MachinesPythonStatistics & Numerical Methods
Expected 2027
Projects
Dual-Axis Automated Carriage for Long Seam Welding
Design & Fabrication ยท Creo Parametric, Delta PLC, HMI
Apr 2026
Designed X & Y-axis actuators in Creo Parametric with full 3D assemblies
Calculated ball screw lead (5 mm), axial force (11.886 Nยทm), torque (0.0105 Nยทm) โ€” FoS >100
Selected C7 ball screw, HIWIN rails, ROTEX jaw couplings for precision & low backlash
Fabricated across 10 machining phases including lathe, milling, drilling
Integrated Delta PLC + HMI for 100 mm precise positioning on Y-axis
Creo ParametricBall screw designDelta PLCStepper motorsHMIGD&T
Influence of Cutting Fluids During Machining
Experimental Study ยท CNC machining, Surface roughness analysis
Mar 2025
Studied effect of dry, coconut oil, and Coolcut 111 on CNC machining of SS304
Measured surface roughness (Ra) using MITUTOYO Surftest SJ-210
Analysed chip thickness, colour, and thermal effects under each condition
Coolcut 111 identified as optimal for best finish and lowest heat/friction
CNC MachiningSS304MITUTOYO SJ-210Tool wear analysisSurface roughness
Experience
Intern โ€” Bonfiglioli Transmissions Pvt. Ltd.
Preventive maintenance & reliability analysis
Apr โ€“ May 2025
Preventive maintenance on 10+ assembly-line machines; ~15โ€“20% reduction in unplanned downtime
Breakdown data across 5+ machine types; identified 3 recurring failure modes
Generated 8+ graphical reports in MS Excel for maintenance planning
Intern โ€” Karthigeya Toolroom Pvt. Ltd.
Injection-moulding quality & inspection
May โ€“ Jun 2025
Cross-functional exposure: design, machining, assembly, quality in mould manufacturing
Applied Fishbone / Ishikawa diagrams and root-cause analysis
Visual & dimensional inspection of 100+ components/week using micrometers and vernier calipers
Intern โ€” Nano Technologies
CNC operations & shop-floor practices
Aug โ€“ Sep 2023
Assisted CNC milling/turning across 5+ part types
Machine setup, tool handling, job sequencing, safety procedures
Visual quality inspection and identification of non-conforming parts
Workshop โ€” Non-Destructive Testing (NDT)
PT, IR thermography, radiographic inspection
Jul 2025
Hands-on with 4 NDT methods: penetrant testing, IR thermography, radiographic inspection
Defect detection โ€” cracks, surface flaws, internal discontinuities in metals
Skills
Languages
Python, MATLAB
Design & Simulation
Creo Parametric, CNC Train, AutoCAD (basic)
Manufacturing
CNC milling & turning, Lathe, Drilling, Welding, GD&T (basic)
Motion & Control
Ball screw design, Stepper motor sizing, Delta PLC, HMI
Quality & Inspection
Micrometer, Vernier caliper, MITUTOYO SJ-210, NDT (PT, IR, RT), Fishbone / RCA
Data & Reporting
MS Excel