Massachusetts Materials Technologies LLC

Desktop Metal, Inc.

Michael J Tarkanian

Simon Claude Bellemare

Brendon M Willey

Steven D Palkovic

Phillip A Soucy

Yet-Ming Chiang

Jonah Samuel Myerberg

Michael Andrew Gibson

Ricardo Fulop

Jay Tobia

Olivia Molnar Lam

Jay Collin Tobia

Systems, methods, components, and materials are disclosed for stereolithographic fabrication of three-dimensional, dense objects. A resin including at least one component of a binder system and dispersed particles can be exposed to an activation light source. The activation light source can cure the at least one component of the binder system to form a green object, which can include the at least one component of the binder system and the particles. A dense object can be formed from the green object by removing the at least one component of the binder system in an extraction process and thermally processing particles to coalesce into the dense object.

Particle stereolithography

An apparatus for performing a contact mechanics test on a substrate includes a stylus, a core configured to engage the stylus against the substrate, a stylus engagement mechanism configured to induce a contact load or a penetration depth to the stylus, a core engagement mechanism configured to maintain contact of the core and to move the core along the substrate surface, a frame configured to be fixed with respect to the apparatus or to be moved together with the core engagement mechanism as an assembly, a frame engagement mechanism configured to engage the frame with the substrate surface; and a substrate monitoring device configured to measure characteristics of substrate contact response and/or collect material machined from the substrate. Methods of performing a contact mechanics test are also provided.

Contact mechanic tests using stylus alignment to probe material properties

Growing community of inventors

West Roxbury, MA, United States of America

Michael J Tarkanian