Undoubtedly, one of the first industries to use additive manufacturing (AM) technology to create lightweight parts was the aircraft industry (optimize weight without compromising strength). The utilization of additive manufacturing in the aerospace sector is on the rise right now. The aerospace 3D printing market is anticipated to reach 9.23 billion US dollars by 2023, with a compound annual growth rate of 20.23%, according to a survey by Strategic Market Research.
Pathways for Metal 3D Printing in Aerospace
As was already said, the aerospace industry has long embraced metal 3D printing because of its many benefits, and this technology model has become mature after years of growth. The aerospace industry as a whole is looking for ways to increase the sustainability of the sector, thus it is projected that this rate of adoption will only increase in the years to come. As more innovative components are needed in the coming years, metal 3D printing will become more popular. As aircraft progress toward electrification and alternate energy sources like hydrogen, that era will soon arrive. It is important to note that modifications to the structural design of the entire airplane will probably be necessary and that one major benefit of this might be the use of additive manufacturing. Known for their ability to create geometries not possible with traditional methods, these technologies enable users to maximize structural design, performance, and safety.
Moreover, a variety of 3D printing techniques are available. In a nutshell, all metal technologies are taken into account while examining the various metal additive technologies employed in the industry. A sustainable business case should always be established through deliberate cost savings or performance enhancements. Beyond component certification, the sector must consider industrialization, where we wish to produce more parts. While aerostructures frequently use directed energy deposition (DED) technologies for their fast deposition rates and big-size capabilities, engines use powder bed fusion for their high-precision restoration capabilities (i.e., complex parts).
The additive manufacturing process depends on materials as well. The materials utilized also change based on the usage conditions and application scenarios. Because lighter vehicles require less fuel, titanium offers a high strength-to-weight ratio, which is essential for aerospace. Since they can function at temperatures close to their melting point, nickel-based superalloys like Inconel are advantageous in high-temperature situations. Aluminum is a good thermal conductor and works well in heat exchanger applications. In general, materials that are frequently produced using conventional techniques for the aerospace industry make great additive manufacturing possibilities.
Yet once a method and a substance have been selected, metal 3D printing has many creative applications in the aerospace industry. The majority of complicated structural parts work in high-temperature conditions, involve heat transfer, or contain fluid passageways, and additive printing is ideal for producing such parts for important aero-engine components like heat exchangers, impellers, volutes, etc.
When applied correctly, additive manufacturing excels, thus the technology chosen must be appropriate for the part's requirements. This needs to be taken into account early on in a project's planning phase, often even before a single word is written. The better your finished component will be, the earlier you should think about additive manufacturing's advantages. If you agree to all of the engineer's restrictions at the start of the design phase, you could see an attractive part, but it was designed without restriction and with no consideration for production methods.