Injection Molding Design Engineer

SIDDHANT WAGHMARE

*** ****** ******, #*, **********, PA - 15213

615-***-**** **********@*****.*** LinkedIn: www.linkedin.com/in/siddhantwaghmare/ CORE COMPETENCIES

• Software Experience:

o CAD: SolidWorks (6 years), AutoCAD (4 years), CREO (3 years), NX (2 years) and Solid Edge (2 years) o FEA Simulations: SolidWorks Simulation (3 years), Ansys (3 years), COMSOL (1 year) and MATLAB (2 years) o Product Database Management: SolidWorks PDM (2 years), Expandable (ERP) (1 year) o Project Management: Microsoft Project (1 year), Asana (2 years) o Other Software Experience: Arduino IDE (2 years), Allegro (1 year), Microsoft Office Suite

• Analytical Skills: Finite element analysis, heat transfer, Multibody dynamics, design of machine elements, kinematics, material selection, quality management tools, systems architecting and geometric dimensioning and tolerances

• Hands-on skills: 3D printers, power & hand tools, able to operate lathe, milling, grinding and drilling machines. Measurement and Inspection tools like calipers, micrometers, standard gauges and electrical tools like multimeters and oscilloscopes WORK EXPERIENCE

Lumasense Technologies Inc. – Santa Clara, CA April 2018 – June 2018 Mechanical Design Engineer (Contract)

• Smart Camera for Thermal imaging systems:

o Prepared drawings for injection molding and machining components using GD&T principles (ASME Y14.5-2009) o Generated CAD drawings, models and assemblies in SolidWorks and maintained them in SolidWorks PDM vault o Achieved IP66 rating for enclosure including specification of seal types, gasket selection and assembly design o Received quotes for manufacturing and comparative analysis of the quotes to develop Bill of Materials

• Ethernet hubs (AC & DC input) for dissolved gas analyzers used in transformers: o From initial concept to design review to detailed drawings to ECO of the parts and assemblies o Designed complete CAD models and assemblies for the enclosures along with populated PCBs o Released drawings for machining with dimensions and tolerances for electronic components like connectors, LEDs etc.

• Qualification of molding tool by First Article Inspection of T0 and T1 samples using calipers, gauges and CMM services: o Measured all internal and external dimensions and performed statistical analysis to determine “critical” dimensions

• Designed an assembly fixture to attach pre-cut adhesive tapes to sapphire windows for Infrared gas analyzers

• Collaborated with mechanical/optical/electrical and manufacturing engineers in design reviews for NPI

• Worked with document control to ensure proper release of part numbers for Expandable (ERP) and engineering change orders Nod Labs - Mountain View, CA June 2017 - Dec 2017

Product Design Engineer (Engineering Co-op)

• Implemented and tested hardware and firmware for virtual reality controllers and head mounted cameras (HMC): o Used SolidWorks to deliver 3D models, assemblies and drawings for prototyping and manufacturing o Assembled prototypes for controllers and cameras using various 3D printers (SLA/FDM and SLS) and machining tools o Designed a testing and programming fixture of the controller touchpads to reduce the programming cycle time by 20%

• Thermal management of PCB and Camera module to achieve target junction and surface temperatures according to ASTM C1055: o Established an analytical model to define the domain, boundary conditions and materials properties for a thermal study o Created CAD models and conducted a thermal study simulation using conjugate heat transfer technique in SolidWorks o Selected a thermal interface material and designed a heat sink along with vents and thermal spreaders on the camera module surface based on the simulation results

o Developed a silicone molded prototype and verified the simulation results using a thermal imaging pyrometer

• Designed experiments to verify hardware and firmware changes in camera and controller to improve tracking performance: o Built a gantry and carriage system with fixtures for camera, controller and stepper motors driven using Arduino Uno o Revised the controllers’ infrared tracking module design to reduce the tooling cost for injection molding by 30% based on the results of the experiment

• Assisted in electrical schematics and layout of PCBs and FPCs using Allegro for component integration

• Troubleshot mechanical and electrical failures in components and made design improvements to reduce failure rate in controllers

• Spearheaded communications with Asian contract manufacturers to assess manufacturability and implement DFM feedback

• Drafted an assembly instructions sheet for controller prototypes to reduce the assembly time and recurring errors LNK Innovations (Startup) – Los Angeles, CA May 2016 - December 2016 Mechanical Design Engineer (Engineering Co-op)

• Led mechanical design team for a product development startup: o Accelerated launch of two products to market within the cycle time set by the management o Brainstormed unique designs, material selection, and manufacturing processes for NPI in design reviews o Managed all aspects of product development in a project management software called Asana

• Mechanical clamp for attachment of solar powered fans to poolside sunbeds: o Generated models, assemblies and detailed drawings of components in SolidWorks and AutoCAD o Conducted structural analysis of mechanical clamp in Ansys to check design feasibility and determine wall thickness o Assembled proof of concepts and prototypes of mechanical clamp through rapid prototyping for design verification

• Silicone key caps for easy key to lock identification: o Researched material selection based on elasticity, strength, hardness and wear resistance specifications o Created CAD models for injection molding, tooling plates for printing and final packaging

• Procurement of components and subassemblies for products from Asian vendors and suppliers: o Sourced suppliers and requested quotes for the released drawings and CAD files o Reviewed the quotes and evaluated availability, lead times, and manufacturing process need o Qualified the delivered samples by first article inspection and placed purchase orders EDUCATION

University of Southern California - Los Angeles, CA December 2017 Master of Science, Mechanical Engineering GPA: 3.85/4 PES Institute of Technology South Campus - Bangalore, India June 2015 Bachelor of Engineering, Mechanical Engineering GPA: 78.9% ACADEMIC PROJECTS

Quality Management System for Trojan Balance January 2017 – April 2017

● Instituted a comprehensive business model to deploy a quality management system for a conceptual startup

● Applied techniques like Gauge R&R, DFMEA and QFD to develop a control plan for the balance

● Fabricated a prototype based on CAD models and drawings in SolidWorks for design verification testing using standard weights

● Curated a quality manual for ISO 9001 certification for the company Design and Analysis of a Centrifugal Governor November 2016 - Dec 2016

● Modeled a centrifugal governor using the provided design specifications in SolidWorks

● Conducted a structural analysis to determine the critical dimensions based on stress concentration areas, Max Von Mises stress, and axial and radial deflection of the governor legs

● Performed frequency analysis to determine natural frequency and frequency mode shapes Material and Process selection for Piston Heads in IC October 2016 - December 2016

• Analyzed material requirements for a low cost and weight piston head for a petrol run IC engine and derived material indices for each requirement.

• Selected a material by elimination based on material characteristics and weighted averages of the desired parameters.

• Selected process based on the manufacturability, shape feasibility, mass, tolerance and economic batch size criteria 3 DOF Robotic Manipulator Dynamics January 2016 - May 2016

• Developed equations of motion of a 3-link robotic manipulator using Lagrangian mechanics in MATLAB

• Derived the position, velocity and acceleration for each link based on the total energy of the system using Lagrange’s equation in polar co-ordinates

Fabrication and Analysis of Solar Tracking Mechanism December 2014 - May 2015

● Prototyped a single axis solar tracking mechanism based on CAD models in SolidWorks

● Used light dependent resistors’ input to control a bidirectional DC stepper motor to track the movements of the sun

● Investigated the increase in the power output with the tracking system and performed uncertainty analysis CERTIFICATIONS

• Certified SolidWorks Professional (In-progress)

• SolidWorks: Advanced Solid, Surfacing, Sheet metal and Molding Tools from LinkedIn Oct 2017

• Diploma in Mechanical CAD from EduCADD center, Bangalore Oct 2015

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