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Essay / Research Paper Abstract
This 18 page paper discusses the materials known as “fiber metal laminates,” how they’re made, and their potential impact on aircraft maintenance. Bibliography lists 8 sources.
Page Count:
18 pages (~225 words per page)
File: D0_HVFMLAir.rtf
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Unformatted sample text from the term paper:
in damages. Fortunately, new materials are being developed all the time. This paper considers the impact of fiber metal laminates (FMLs) on aircraft and aircraft maintenance. Discussion A note about
the research: repeated searches have unfortunately not turned up any handy articles with titles like "FMLs and Their Impact on Aircraft Maintenance" or "How Using FMLs has Saved Time and
Money for Aircraft Maintenance Personnel." (This is not surprising; it almost never happens.) That being the case, it seems reasonable to examine what FMLs are, why they are promising, and
what tests have already shown, and extrapolate from there to infer what impact they will have on aircraft maintenance. FMLs are "materials consisting of thin layers of metal sheet and
unidirectional fiber layers embedded in an adhesive system" (Leu, 2006). There is a specific type of FML called "GLARE": "GLAss Reinforced Laminate" that is an "optimised [sic] FML for aircraft
and consists of alternating layers of aluminium and glass fiber prepreg layers" (Leu, 2006). (Leu doesnt define "prepreg" but a search through some online dictionaries reveals that it means a
material that is pre-impregnated with an adhesive.) To produce a laminate, which is made in an autoclave, layers of material are stacked by hand or machine (Leu, 2006). Because it
is laid out by hand, its possible to "tailor" the laminate for a specific application (Leu, 2006). In such cases, both the "direction of the fibre [sic] layers as well
as the number of layers in the entire structure can be varied to suit the application (Leu, 2006). Work on FMLs has been on-going since the 1970s; the purpose
behind the research was to "create a material with improved fatigue properties and high damage tolerance capabilities" (Leu, 2006). The development of FMLs was spurred in particular by an accident
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