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Manufacturing Technology Insights | Sunday, February 28, 2021
At every level of development and production, aerospace and defense firms routinely collaborate with digital manufacturers to exploit existing expertise
Fremont, CA: Aerospace is a forerunner in the application of sophisticated production techniques. In reality, aerospace is frequently the first to develop novel advanced manufacturing techniques that are later adopted by other industries. This is owing to the unique challenges of designing aircraft and spacecraft, such as extreme environmental conditions, materials that must be strong, lightweight, and temperature and corrosion-resistant, and extremely fine, tight-tolerance features that necessitate micro-and nano-machining methods, such as laser machining and welding.
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Advanced technologies used for aerospace manufacturing are:
Additive manufacturing
Aerospace is among the first industries to understand the enormous potential of additive manufacturing for designing parts with sophisticated materials and unique geometry. Most components are printed using powder-bed laser printing technologies; however, alternative laser and electron beam techniques are also employed. AM can also be used to create lattice structures, particularly within the fuselage, which assist in dissipating heat and saving weight. AM is also a great technique to make a single part that substitutes a lot of different pieces, reducing the number of probable failure sites and making assembly easier.
Composite material
Advanced composite materials, mainly metals or polymers with precise proportions of certain additives to boost physical qualities such as strength, flexibility, chemical and temperature resistance, are still used by aerospace engineers. The main purpose of composites in aerospace is to reduce the weight of airplanes and spacecraft. Vehicles that are lighter consume less fuel and emit fewer greenhouse gases. Composites require the use of carbon, glass, metal, and ceramics.
Laser beam welding
When compared to conventional welding procedures, laser welding allows for faster and more precise processing. As a result, laser welding is a viable option for handling materials that demand great precision and repeatability. It's also a good way to link incompatible materials together, which can be difficult with standard welding methods. The fact that laser welding transfers extremely little heat to the material being fused is perhaps its most significant advantage. There is no heat-affected zone created surrounding the weld. There are no cracks or material weaknesses that could jeopardize the joint's performance.
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