Study shows metal additively manufactured pins enhance toughness of hybrid metal-composite structural joints

NewsResearch
August 17, 2023

August 17, 2023

At the 23rd International Conference on Composite Materials, in Belfast, Ireland, mechanical/aerospace engineering PhD candidate Tiana Bagnato presented her co-written paper ‘Superior interfacial toughening of hybrid metal-composite structural joints using 3D printed pins’. The paper was recently published in Composites Part A: Applied Science and Manufacturing.

The presented study showcases an experimental investigation into enhancing the interfacial toughness properties of hybrid titanium-to-composite structural joints by using additively manufactured metal pins made using Laser Beam Powder Bed Fusion (PBF-LB). The joints were formed by manufacturing an orthogonal array of thin (1.0 mm) diameter titanium pins over the titanium substrate using PBF-LB. These pins were then embedded into a carbon-epoxy composite substrate to create a high toughness interface.

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

Reportedly for the first time, Ti-pinned hybrid joints produced via PBF-LB Additive Manufacturing were evaluated both with and without film adhesive, which is co-bonded between the titanium and composite substrates. The Ti-pins increased the modes I and II interfacial toughness of the hybrid joints by up to about 19 and 11 X, respectively. The study posits that pins created using Additive Manufacturing are highly effective at strengthening and toughening hybrid metal-composite joints, with the need for adhesive bonding dependent on the loading condition.

“The five-day long conference was filled with fascinating presentations from seasoned academics and PhD students alike, where I not only witnessed ongoing research in my field but was able to learn of research in my areas of interest; specifically sustainability and end-of-life analysis of composites,” Bagnato posted on LinkedIn. “I was incredibly grateful to be given the opportunity of a twenty-minute presentation slot in the main auditorium of ICC Belfast, to discuss the ongoing fatigue studies of my PhD work.”

The paper is available here.

www.iccm23.org

www.rmit.edu.au

www.dst.defence.gov.au

Download Metal AM magazine
NewsResearch
August 17, 2023

In the latest issue of Metal AM magazine

Download PDF
 

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

  • Kennametal: The story of the successful commercialisation of AM hardmetal and steel solutions
  • General Atomics Aeronautical on metal Additive Manufacturing’s place at the centre of the digital manufacturing revolution
  • Adrian Keppler on Additive Manufacturing: An insider’s assessment from the outside
  • Metal AM’s journey to industrialisation: Are we there yet? And what does the destination even look like?
  • A stronger future, layer by layer: How next-generation software will drive adoption of metal AM
  • Volkmann: Making the case for the complete automation of powder handling in AM
  • Metal AM on an industrial scale: GKN Additive draws on decades of sintering expertise to commercialise Binder Jetting
  • International Conference on Electron Beam Additive Manufacturing: Highlights from EBAM 2023

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