United States Department of Transportation
i
An Evaluation of the Flammability of 3D Printed Part Parameters Using the Vertical Bunsen Burner Test Method
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2023-12-01
[PDF-4.46 MB]
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Abstract:Additive manufacturing (AM), commonly referred to as three-dimensional (3D) printing, is a modern manufacturing technology that can be applied within many different areas of the aerospace industry due to its ability to produce light and durable parts with complex geometries. Aircraft manufacturers and airlines have expressed interest in the use of AM produced parts in aircraft cabins. However, AM presents new safety challenges that must be examined, including the flammability of the 3D printed part used in the aircraft cabin. Due to the different parameters used during the production process compared to traditional manufacturing methods, it was necessary to determine the effect that variations in print parameters have on the flammability of a 3D printed part. In order to accomplish this, the following print parameters were evaluated; material type, sample thickness (number of inner layers), infill percentage, infill pattern, raster width, raster angle, and print orientation. The scope of this report only includes samples produced from the Fused Filament Fabrication (FFF) AM method, a type of extrusion-based AM process.
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