The aerospace industry is a world leader in advancing science and technology. Of the nearly 50 countries that have one or more aerospace companies, the United States possesses the world’s largest aerospace industrial complex. Russia retains the second largest aerospace industry in the world. Western Europe’s aerospace industry has become a strong global player, with France, the United Kingdom, and Germany particularly active. In the Asia–Pacific Rim region, Japan has the leading aerospace industry, but—compared with the United States, western Europe, and Russia—its capabilities are still limited.
The aerospace industry is getting a boost in Transforming Airline Parts through a revolutionary new approach called 3D printing. This process was invented at MIT in the late 1980s. In contrast, 3D printing builds parts layer by layer, adding material in just the right places to create the precise shapes needed.
For aerospace companies, this 3D printing or “additive” manufacturing offers the promise of making parts that are better and stronger, enabling them to build airplanes and rockets that are safer, more reliable, and better performing. GE uses 3D printing to build jet engine fuel nozzles, for instance, instead of welding together 20 small pieces. Technology Review recently named additive manufacturing one of its 10 “Breakthrough Technologies.”
But this new industrial revolution is being held back by a thorny problem. Tiny variations in parameters like temperature or raw material composition can subtly alter how each layer of material is laid down. As a result, it is extraordinarily difficult to build identical top-quality parts every single time.
The industry has recognized this problem and is working hard to solve it. The most promising approach is meticulously monitoring all the relevant parameters as a part is being built, then processing the information to determine if the part meets all standards. That will ensure repeatability, consistency, and reliability.
Several companies are working on this idea, but one leader is Santa Fe, NM-based Sigma Labs, Inc (NASDAQ:SGLB). Sigma has developed sophisticated software that monitors the 3D process as a part is being built, and determines whether the product meets quality standards. Its Process Quality Assurance™ software is now being used in pilot projects at major aerospace manufacturers.
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