NIT’s short-wave infrared imaging provides unique view of melt pool

News
May 23, 2019

May 23, 2019

Video footage highlighting the improved definition seen using short-wave infrared imaging (Courtesy NIT)

New Imaging Technologies (NIT), a specialist supplier of imaging sensors and cameras, headquartered in Paris, France, has demonstrated the use of its Short-Wave Infrared (SWIR) imaging systems to monitor the metal Additive Manufacturing process. Working in conjunction with the Institut Maupertuis, a French research centre specialised in automated production processes, the company has released detailed footage of the melt pool formed during certain metal Additive Manufacturing processes.

When dealing with metals, the company states, laser wavelength has to be carefully selected in a region where the metal absorption level is at its maximum. Common metal materials, such as aluminium, copper, chromium, Iron, nickel, tungsten or even platinum have their maximum absorption in a wavelength region between 1-2 μm, contrary to polymer where the maximum absorption wavelength is above 10 μm.

A camera, with the appropriate wavelength, will give the operator the ability to clearly optimise the fabrication processes. Having imaging information or analysis on the melt pool, during the operation of the AM machine, could provide valuable information for process optimisation and in-line quality control, the company states.

In the video footage, NIT illustrates how its WiDy SenS SWIR camera performs in the very high flux scenes of the melt pool in wire-arc Additive Manufacturing (WAAM) and laser Additive Manufacturing processes. Thanks to its high dynamic range, the true shape and geometry of the melt pool can be scene without any blooming effect. The camera can operate up to several hundred frames per second, making it possible to capture fast Additive Manufacturing processes without losing details, such as the ejected droplets around the melt pools.

Watch the video footage here

www.new-imaging-technologies.com

 

 

 

News
May 23, 2019

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