The Federal Aviation Administration (FAA) is offering a $3 million grant to Auburn University’s National Center for Additive Manufacturing Excellence (NCAME). Over the next two years, researchers will be studying how to improve commercial air travel by implementing additive manufacturing technology with metal. This project should further the NCAME reputation for expertise in existing and emerging structural applications of advanced materials, namely for spaceflight.
The focus is on the variables involved in 3D printing that could be the cause of underlying defects. With so many different types of hardware, software, and materials in use today, there is plenty of unpredictability to deal with in terms of results. And while that might be somewhat more acceptable in making smaller parts, or items not expected to be used in critical applications, when building a plane, safety and perfection in performance are top priority.
Along with examining variables in manufacturing, the Auburn researchers will be exploring how microscopic details with 3D printed metal can cause resulting fatigue in parts, as well as fractures.
“This is what I call the ‘Achilles heel’ of additive manufacturing,” said NCAME director Nima Shamsaei, Philpott-WestPoint Stevens Distinguished Associate Professor of mechanical engineering, also serving as co-principle investigator (PI) on the project. “Such variations make the qualification and certification of AM materials and parts challenging.
“By understanding the sources of variability, controlling them, or accounting for them, we can generate more reliable materials data, and more reliable AM products.”
NCAME was founded in 2017 in a partnership between Auburn and NASA, and also co-founded the ASTM International Additive Manufacturing Center of Excellence.
Ultimately, the researchers hope that their study will be helpful to engineers designing aircraft—allowing them to build planes that are not only safer but also more streamlined. This collaboration teams faculty with skilled engineers and scientists from the FAA.
Industrial users continue to rely more on metal in 3D printing due to its strong mechanical properties that also yield parts lighter in weight—making them extremely viable for applications in aeronautics and aerospace.[Source / Image: Business Insider]
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