Shashank H R

---

University of California, Berkeley | GPA: 3.94/4 | 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

---

Velo3D | Senior Process Engineer | Campbell, CA, USA June 2021 – Present

A member of the Process Team at Velo3D, a manufacturer of laser powder bed fusion based metal 3D printers with proprietary SupportFree™ technology.

Gantri | Senior Materials Engineer | San Francisco, CA, USA May 2020 – June 2021

Sole Materials Engineer at Gantri, a producer of designer articles using 3D printing of sustainably sourced materials.

• Process engineering: Currently lead print process development at our production facility, sporting one of the largest fleets of FDM 3D printers. Additionally, I work with vendors to specify and control incoming feedstock, for end-to-end process control.
• Recycling and sustainability: Pioneer and lead efforts with external vendors for shredding and recycling of waste material from production into new feedstock. This material will be used for internal components, where diminished properties are acceptable.
• New material and process discovery: Explore and develop new material systems and finishing processes that can potentially improve product quality, surface finish, and yield, while increasing productivity and reducing carbon footprint and labor costs.

Chefman | Product Development Engineer | Mahwah, NJ, USA February 2020 – Present

Full-time February 2020 – April 2020

Part-time | Remote April 2020 – Present

The team builds new products while working closely with contract manufacturers in Asia throughout the design process.

• New product development: Competitor benchmarking, prototyping, simulation and experimental evaluation of design, and materials selection for structural components and coatings. This includes Design Failure Mode and Effect Analysis (DFMEA).
• Collaborating with offshore contract manufacturers: Review initial specifications, write test plans, perform validation testing on samples, and specify changes to ensure requisite performance and compliance with specifications before mass-production.
• Failure analysis and sustaining engineering: Work with the Customer Support department to identify top failures on returned malfunctioning products, perform failure analysis, and roll out changes before the next batch is mass-produced.

Desktop Metal | Materials Engineer | Burlington, MA, USA June 2017 – December 2019

A member of the Materials team at Desktop Metal, a manufacturer of office-friendly metal and composite 3D printers.

• New alloy development: Led powder specification, sintering process development, microscopy and microanalysis, and Design-of-Experiments and statistics-backed process qualification for the development of five materials for the Studio System™ (including Stainless Steels, Tool Steels, low-alloy steels, and Ni-based superalloys).
• Development of materials processing equipment: Worked closely with the hardware and applied science teams in the development of the Studio System™ furnace, one of the smallest vacuum furnaces capable of sintering stainless steels.
• Post-processing: Developed and qualified post-processing techniques such as heat-treatment, case hardening, nitriding, and mechanochemical surface finishing of additively manufactured parts with partner vendors.
• Material science-based solution development: Developed the getter system, which provides an atmosphere of required purity and allows sintering of certain sensitive materials on the low-cost Studio System™ furnace.
• Expertise and knowledge sharing: Provided technical expertise to customer-facing teams and helped develop content for the Desktop Metal Knowledgebase, a platform to make internal best-practices available to external users.
• Select other projects: Geometry accuracy and compensation (USPTO application US20180307209A1), toolpath planning, development of infrastructure to store experimental data (including IoT-based equipment logging).

GE Global Research | Manufacturing and Materials Technologies | Internship | Bangalore, IndiaMay – July 2014

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.

---

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.

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.

---

To learn more about my skills, please visit the Skills page:   Skills

---

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

---

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