Shashank H R

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Education

University of California, Berkeley | GPA: 3.95/4 | Berkeley, CA, USA August 2016 – May 2017

Master of Engineering in Materials Science and Engineering | Concentration: Advanced Structural Materials

Indian Institute of Science | GPA: 7.4/8.0 | Bangalore, India August 2012 – May 2016

Bachelor of Science in Materials | Awarded The Institute Medal for exceptional academic performance | Class position: 1st of 30

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Experience

Desktop Metal | Materials Engineer | Burlington, MA, USA June 2017 – Present

A member of the Materials team at Desktop Metal, a company striving to make metal 3D printing office-friendly.

• Led projects across the process for the Studio System™, including new material development, toolpath planning, geometry accuracy and compensation, R&D furnace architecture, R&D throughput metrics, internal part-tracking, experimental data storage and analysis, specification and build of custom experimental equipment, and many more. A few projects have led to filing of provisional patent applications.
• The list of projects includes a mix of assigned projects, and projects initiated by me when the need was recognized.

University of California, Berkeley | Capstone Project | Berkeley, CA, USA August 2016 – May 2017

Title: Improving Reliability of 3D Printed Materials in Biomedical Applications

• Worked on the corrosion aspects of metal additively manufactured parts, in the context of orthopedic implants.
• Performed mechanical testing in corrosive environments and examined the failure surface using standard metallographic techniques.
• Used this data to generate design guidelines for additively manufactured implants.

Georgia Tech | Direct Digital Manufacturing Lab | Bachelor’s Thesis | Atlanta, GA, USAMay – December 2015

Title: Design-of-Experiment Based Process Optimization for Single-Crystal CMSX-4® Ni-based Superalloy Processed Through Scanning Laser Epitaxy (SLE), a Metal Additive Manufacturing Process

• Learned about additive manufacturing technologies that can be used for metals in general, and for Ni-based superalloys in particular.
• This process can add immense value to customers in the commercial aviation industry by enabling repair and reuse of high-value parts, thus dramatically extending the service life of these components, resulting in substantial savings.
• Performed experiments and analysis as a part of a Design-of-Experiment based process optimization. My expertise with metallography and characterization led to significantly better micrographs, rendering more features visible.

GE Global Research | Manufacturing and Materials Technologies | Internship | Bangalore, India

Title: Investigation of recrystallization due to compression straining in Ni-based superalloy GTD 444

• Learned about Ni-based superalloys, particularly Single Crystal (SX) and Directionally Solidified (DS) superalloys, used in jet engines and gas turbines. Performed systematic metallographic analysis and analyzed the micrographs using image processing techniques.
• Understood the importance of microstructure, and how subtle changes therein could result in large changes in macroscopic properties.
• Experienced the scale at a large multi-national corporation that manufactures many different products, from light bulbs to jet engines, and gained exposure to corporate R&D operations.

Indian Institute of Science | Materials Engineering | Summer Project | Bangalore, India May – July 2013

• Studied flow pattern formation due to liquid electromigration and thermomigration in Gallium.
• Worked in nanofabrication and nanocharacterisation facilities (in the cleanroom), at Centre for Nanoscience and Engineering, IISc.
• Learned to use a Scanning Electron Microscope, with its various peripheral functions such as EDS and EBSD.

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Publications

Patent applications

• Nanoparticle delivery for controlling metal part density in additive manufacturing (US20180236541A1)
• Adaptive 3D printing (US20180307209A1)
• And more applications, pending publication

Scientific journals

• Microstructures and Microhardness Properties of CMSX-4® Additively Fabricated Through Scanning Laser Epitaxy (SLE)
  Basak, A., Holenarasipura Raghu, S. & Das, S. J. of Materi Eng and Perform (2017) 26: 5877.
  https://doi.org/10.1007/s11665-017-3008-9

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Conferences and Trade Shows

Conferences

Presented

• MS&T 2018 (Columbus, OH)
• Abstract Title: Near net-shape, additively manufactured metal parts with stress-free isotropic microstructures via sintering
• Authors: Shashank Holenarasipura Raghu, Michael Gibson, Nihan Tuncer, Brian Kernan, Anna Trump, Jesse Cataldo, Ellen Benn, Shannon Taylor, Alexander Barbati, Animesh Bose, Lisa Maiocco,
• Presenter: Shashank Holenarasipura Raghu
• Abstract: Desktop Metal is bringing two multi-step additive manufacturing processes to market. The nature of these two processes produces isotropic microstructures that are uncommon in metal additively manufactured parts made using traditional laser or e-beam based techniques. With grains that form across layer lines and parts that are free of residual stresses, the processes make components that can take advantage of the unique capabilities of additive manufacturing while still being able to benefit from traditional metal post-processing techniques such as heat treatments and case hardening. This talk aims to cover the nature of this distinct microstructure in its space, and explore the new possibilities it brings to industry.

Attended

• Powdermet 2019 (Phoenix, AZ): Powder metallurgy
• MS&T 2018 (Columbus, OH): General Materials Science and Engineering conference
• 4th International Conference on Additive Manufacturing Technologies (Organized by the Additive Manufacturing Society of India)
• Vijyoshi 2012: Science camp organised by the Department of Science and Technology, Government of India on the lines of the Lindau Meet with Nobel Laureates.

Trade Shows

• Eastec 2019
• Design2Part show 2018
• IMTEX 2012, 2014, 2015