Incus GmbH partners with Yale University’s NanoProbe Group to explore auxetic structures

NewsResearch
February 2, 2024

February 2, 2024

Incus GmbH is collaborating with the NanoProbe Group at Yale University on a research project focussed on auxetic structures. Seen here before and after testing (Courtesy Incus)
Incus GmbH is collaborating with the NanoProbe Group at Yale University on a research project focussed on auxetic structures. Seen here before and after testing (Courtesy Incus)

Incus GmbH, Vienna, Austria, has partnered with the NanoProbe Group at Yale University to conduct collaborative research on auxetic structures. Led by Jacob Eldred, an undergraduate research assistant at Yale, and the NanoProbe Group, which is known for its work in materials characterisation and discovery, this collaboration aims to explore innovative designs and production methods for unique lattice structures.

THE WORLD OF METAL AM TO YOUR INBOX
Subscribe to our weekly newsletter
Sign up

The lattice structures designed by Jacob Eldred aim to exhibit a negative Poisson’s ratio, causing the sample to become thinner when compressed or vice versa. This behaviour is attributed to the special design of the geometrical features, presenting challenges for conventional manufacturing processes.

The Hammer Lab35, Incus’ Additive Manufacturing machine, played a key role in bringing these intricate structures to life and assess the performance of both the structure and the material.

The sample’s exterior dimensions measure 9.3 x 9.3 x 10.2 mm, with a minimum lattice thickness of 150μm  (Courtesy Incus)
The sample’s exterior dimensions measure 9.3 x 9.3 x 10.2 mm, with a minimum lattice thickness of 150μm (Courtesy Incus)

The sample’s exterior dimensions measure 9.3 x 9.3 x 10.2 mm, with a minimum lattice thickness of 150μm and a volume fill level of only 9%. The samples were manufactured without any support structures, and no post-processing was applied, such as machining, sand blasting, or chemical surface treatment.

The first measurements revealed a negative Poisson’s Ratio: ν = -0.59, @ ε = 6.1%, approximately twice the yield strain.

These auxetic structures have the potential for stress absorption and biomedical applications and can also function as multi-axial springs when produced in 3D forms.

This collaboration demonstrates the potential of merging technology with innovative research. Further opportunities in advanced materials and structures are anticipated.

www.incus3d.com/

www.eng.yale.edu/nanomechanics/index.html

Download Metal AM magazine
NewsResearch
February 2, 2024

In the latest issue of Metal AM magazine

Download PDF
 

Extensive AM industry news coverage, as well as the following exclusive deep-dive articles:

  • The GRCop story: The development, production and Additive Manufacturing of NASA’s rocket engine alloys
  • Formnext 2023: Innovations in metal Additive Manufacturing from the industry’s leading international exhibition
  • Cybersecurity in Additive Manufacturing: Securing the industry’s future
  • Additive Manufacturing in the jewellery industry: exploring the potential of platinum and titanium
  • Mission possible: The five-year plan to gain FAA and EASA acceptance of in-process monitoring

The world of metal AM to your inbox

Don't miss any new issue of Metal AM magazine, and get the latest industry news. Sign up to our twice weekly newsletter.

Sign up

Discover our magazine archive…

The free to access Metal Additive Manufacturing magazine archive offers unparalleled insight into the world of metal Additive Manufacturing from a commercial and technological perspective through:

  • Reports on visits to leading metal AM part manufacturers and industry suppliers
  • Articles on technology and application trends
  • Information on materials developments
  • Reviews of key technical presentations from the international conference circuit
  • International industry news

All past issues are available to download as free PDFs or view in your browser.

Browse the archive

Looking for AM machines, metal powders or part manufacturing services?

Discover suppliers of these and more in our comprehensive advertisers’ index and buyer’s guide, available in the back of Metal AM magazine.

  • AM machines
  • Process monitoring & calibration
  • Heat treatment & sintering
  • HIP systems & services
  • Pre- & post-processing technology
  • Powders, powder production and analysis
  • Part manufacturers
  • Consulting, training & market data
View online
Share via
Copy link
Powered by Social Snap