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3D Printing / Additive Manufacturing

To keep our members informed on emerging trends, AGMA has put together this resource on 3D Printing/Additive Manufacturing.

Information is also available on these other topics:


Additive Manufacturing (AM) is a term used to describe the technologies that build 3D objects by adding layer upon layer of material. These printers use various materials including, but not limited to, plastic, metal, concrete, and human tissue.

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EMERGING TECH NEWS

Read some of the latest articles available on 3D printing/additive manufacturing.

 

TECH DECK

Each week we pick one article on 3D printing that is a must read for the week.

REPORTS

Lattice structure absorbs vibrations
Science Daily

Researchers have developed a lattice structure capable of absorbing a wide range of vibrations while also being useful as a load-bearing component—for example, in propellers, rotors and rockets. It can absorb vibrations in the audible range, which are the most undesirable in engineering applications.

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Dissolvable metal supports for 3D direct metal printing
Published paper

ABSTRACT: Additive manufacturing (AM) offers the ability to fabricate complex metallic structures and shapes in a layer-by-layer process. However, overhanging surfaces often require support structures to be fabricated and minimize thermally induced distortion. Unlike polymer AM processes, soluble sacrificial support materials have not been identified and characterized for metallic materials, and, as a result, support structures in 3D printed metals must be removed using additional machining operations. In this work, we demonstrate that sacrificial metal supports can be fabricated by taking advantage of differences in the chemical and electrochemical stability between different metals. As a demonstration, a stainless steel bridged structure with a 90° overhang was fabricated using a carbon steel sacrificial support that was later removed through electrochemical etching in 41 wt.% nitric acid with bubbling O2. Open circuit potentials and potentiodynamic polarization curves were gathered to verify etch selectivity. No machining, grinding, or finishing operations were required to remove the metallic supports using this approach. This novel approach introduces new capabilities to AM that could drastically reduce the postprocessing needed for 3D printed metal components.

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Laser-assisted direct ink writing of planar and 3D metal architectures
National Academy of Sciences

ABSTRACT:The ability to pattern planar and freestanding 3D metallic architectures at the microscale would enable myriad applications, including flexible electronics, displays, sensors, and electrically small antennas. A 3D printing method is introduced that combines direct ink writing with a focused laser that locally anneals printed metallic features “on-the-fly.” To optimize the nozzle-to-laser separation distance, the heat transfer along the printed silver wire is modeled as a function of printing speed, laser intensity, and pulse duration. Laser-assisted direct ink writing is used to pattern highly conductive, ductile metallic interconnects, springs, and freestanding spiral architectures on flexible and rigid substrates.

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STRENGTH

Additive Manufacturing has changed the face of personally customized products. It has also shortened prototype timelines from months to days. Complex components can be made in less time and with fewer parts.

WEAKNESS

Layered technology has not proven to produce parts that can take a lot of torque or tension.

 

OPPORTUNITY

This industry has a lot of growth potential.

 

Eliminating processes and time taken for traditional manufacturing.

 

THREAT

New technologies in this space are being developed very quickly. The potential for this to disrupt the normal flow of gear manufacturing is a possibility.


Upcoming Events in 3D Printing and Additive Manufacturing

February 5-7, 2019

ATX West | Anaheim, CA

Design & Manufacturing Pacific | Anaheim, CA

 

February 6-7, 2019

Military Additive Manufacturing Summit & Technology Showcase | Tampa, FL

 

February 10-13, 2019

Solidworks World | Dallas, TX

 

March 31-April 4, 2019

AMUG 2019 | Chicago, IL

 

April 30-May1, 2019

Ceramics Expo | Cleveland, OH

 

May 20-23, 2019

Rapid + TCT | Detroit, MI