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The largest
single regulatory obstacle to using advanced composite materials in
certified aircraft applications has been the generation of design allowables
which will satisfy Regulatory agency requirements. Previously, individual
airframe manufacturers generated design allowable databases as a routine
part of their certification effort. However, with expensive qualification
costs and timelines that can be longer than 12 months, this approach has
proved unfeasible for smaller manufacturers and has often led larger
manufacturers with established databases to continue to use "old" material
systems.
Since 1996, FiberCote has worked closely with the FAA, Wichita State
University, and NASA’s Advanced General Aviation Transport Experiments
(AGATE) program to develop a method for composite materials suppliers to
generate design allowable databases and share them with airframe
manufacturers. As a result, FiberCote has created a set of design allowable databases that are approved by the FAA for a family of materials based on
E-765 - a tough, shop-friendly, 180°F Wet service (Wet/Dry Tg = 334°F/247°F
- DMA Tan ) epoxy system
that cures at just 250°F. Designed
specifically for critical aircraft structures and based on the latest
developments in resin technology, E-765 demonstrates good toughness,
outstanding fiber property translation and is suitable for vacuum bag or
autoclave processing.
The
E-765
Materials and Databases
Familly
Materials |
FAW(gsm) |
CPT(in.) |
FAA Approved
Databases
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Lamina
Properties |
Laminate
Properties |
T300 3K Plain
Weave Carbon |
195 |
0.009 |
Complete |
7/01 |
T300 6K Five
Harness Satin Carbon |
370 |
0.016 |
7/01 |
7/01 |
T700
Unidirectional Carbon |
150-300 |
0.005-0.010 |
Complete |
7/01 |
7781
Fiberglass |
295 |
0.009 |
Complete |
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T700 12K
Twill Carbon |
370 |
0.016 |
12/01 |
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T700 12K
Plain Weave Carbon |
195 |
0.009 |
Screening |
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In
addition, FiberCote has addressed Process Specifications that meet FAR
23.605 and Material Specifications that meet FAR 23.603.
Several structures are already flying with E-765. Additional detailed
product and database information is available. Let us show you how you can
shorten your design cycle and reduce your program costs and risks with E-765
Databases and the E-765 Materials Family.
For more information about E-765 Products and FAA Approved Databases,
Contact Us. |
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If you don't find what you're looking for,
Contact Us.
We may have a suitable product that's not listed, or we may be able to
develop a material to fit your specific needs.
Tel : (02)2217-3442 / Fax : (02)2704-4070
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