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Metallurgy, Additive manufacturing, Characterisations

Location:
Irvine, California, United States
Posted:
February 14, 2018

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NITHYA RAMESH

**** ******** ****, *** **, Irvine, CA 92612

Ph: +1-949-***-****; E-mail: ac4gs5@r.postjobfree.com

https://www.linkedin.com/in/nithya-ramesh

EDUCATION

Masters in Materials Science and Engineering Sep 2016 -Present University of California, Irvine GPA: 3.89/4.0

Coursework: Solid State Physics, Crystalline Solids, Atomistic Theories, Phase Transformations & Heat Treatment, TEM.

Bachelor of Technology in Metallurgical and Materials Engineering May 2015 National Institute of Technology, Trichy, India GPA: 9.13/10.0 Honors: Awarded Steel Authority Scholarship by Government of India. Relevant Coursework: Physical Metallurgy, Mechanical Behavior of Materials, Non Ferrous Physical Metallurgy, Materials Characterization Techniques, Non Destructive Testing, Fatigue, Creep & Fracture Mechanics, Welding Metallurgy, Metal Casting, Iron & Steel Making, Ceramic Engineering, Polymers & Composites, Strength of Materials.

SKILLS

Characterization: TEM, STEM, SEM, XRD, FIB, EDS, EBSD, Optical Microscopy, DSC, UV-Visible Spectroscopy, DLS.

Material Processing: LENS (AM), Casting, Ion Milling, Plasma Cleaner, Dimpler. Mechanical Testing: Brinells, Rockwell, Vickers Hardness Tester, UTM, Proof Ring. Programming: COMSOL, C/C++, HTML.

WORK EXPERIENCE

Graduate Student Researcher Sep 2017 - Present

Structure-property relationship of AlSiMg builds fabricated through Laser Engineered Net Shaping

● Masters thesis on characterizing the AlSiMg parts additively manufactured through LENS.

● Deposited single tracks and single walls from AlSi10Mg commercial powder.

● Additively manufactured AlSi10Mg parts through LENS.

● Studying the gradient in microstructure and various electron microscopy characterization techniques.

● Studying the crystal structure and orientation relationship between the phases.

● In situ TEM characterizations to understand the precipitation dynamics.

● Studying the influence of heat treatment on mechanical properties by understanding the microstructure. Instruments Used: LENS, TEM, SEM, EDS, XRD, FIB, Optical Microscopy, DSC Tesla Motors July 2017 – Sep 2017

Materials Engineering Intern

Improving the mechanical and electrical properties of newly developed Aluminum 6xxx.

● Casting of Aluminum-Silicon-Magnesium alloys of different compositions.

• Implemented T5 and T6 heat treatment schedule to achieve higher strength and conductivity through aging.

• Studied structure-process-property relationship through characterization techniques and mechanical testing.

Evaluation of magnetic materials by building Ashby Charts to aid in materials selection for Permanent Magnet motors

• Built Cost vs. Performance Ashby charts for soft and hard magnetic materials by understanding performance driving properties in rotor and stator.

• Enabled selection of alternative permanent magnet materials. Tata Motors Limited, India Aug. 2015 – April 2016

Assistant Manager, Central Quality

● Responsible for day to day laboratory operations and mechanical and chemical testing as per ASTM/ISO standards.

● Successfully prepared and passed ISO/IEC 17025: 2005 NABL audits during my tenure as well as Proficiency testing.

● Produced standard operating procedures and technical operating instructions for test equipment.

● Responsible for maintaining the competence of lab as per NABL requirements and its continual improvement.

● Member of Supplier Quality Improvement Team, which aimed at improving suppliers quality by validating processes to achieve World Class Quality Level III for the organization.

● Trained on Laboratory Quality Management System and Internal Audit as per ISO/IEC-17025 and NABL requirements.

Procter & Gamble, India May 2014- July 2014

Engineering Intern

● Project on Energy Footprint Reduction of Making Platforms for the three dry laundry plants in India.

● Designed a process control strategy to optimize their Utility Process centerlines by revalidating it to find out the stretch condition.

● Internal and external benchmarking of technologies used in the sectors.

● Proposed a 10% reduction from their current energy footprint. RESEARCH EXPERIENCE

Synthesis of gold nanoparticles on PMMA coated Si substrate to enhance Raman sensitivity March 2017 – May 2017

• Design of nanostructured plasmonic substrates using self-assembly of Au spheres on block co-polymer templates.

• Studied the effect of nano particles size on signal sensitivity. Instruments Used: UV Visible Spectrometer, DLS.

Stress corrosion behavior of Calcium added Magnesium-Aluminium-Zinc alloy July 2014- May 2015

● Produced AZ91 + x% Ca (x% =0,1,2,3,4) alloy through stir casting method.

● Studied effect of Calcium addition on mechanical properties and stress corrosion resistance.

● An increase in stress corrosion resistance and mechanical properties was recorded up to the addition of 3%Ca.

Instruments Used: Optical Microscope, SEM-EDS, XRD, Vickers Tester, Potentiodynamic Polarization Tester, Proof Ring Apparatus.

Preparing high purity Platinum/CNT catalyst for Proton Exchange Membrane Fuel Cells Dec 2013 – Jan 2014

● Coated Platinum on sensitized and activated CNTs through electroless deposition method.

● Prepared Pt/CNT catalyst ink using Nafion and fabricated MEA through Decal method.

● SEM with EDS characterisation of Pt/CNT, GDL and catalyst structure was done.

● Carried out test for IV characteristics using a single PEM fuel cell. Instruments Used: Electric Arc Discharge, SEM-EDS, Optical Microscope, Hydraulic Press.



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