clbarclay
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 posted on 7/2/06 at 08:34 PM |
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Aluminium Honeycomb
I'm trying to find information about working with/ designing components from honeycomb sheets. So far not much luck.
Any information, web sites, books, experiances etc on the subject will be most appreciated.
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flak monkey
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| posted on 7/2/06 at 08:43 PM |
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I am doing a uni project on making a chassis out of it...
Any help   
If you want some info, email me (or come on MSN if you are on there) and I will let you know what I know...
David
[Edited on 7/2/06 by flak monkey]
Sera
http://www.motosera.com
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flak monkey
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| posted on 7/2/06 at 08:50 PM |
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Oh and if you want to get really fancy theres metal foams to get into as well. Hehehe Pricey though!! 
David
Sera
http://www.motosera.com
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clbarclay
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| posted on 7/2/06 at 08:54 PM |
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I expected it not to be a cheap option, how much does the honeycomb cost per sheet and obviously what size do the sheets typically come in?
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flak monkey
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| posted on 7/2/06 at 08:59 PM |
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Sheet sizes vary, but 1.5mx2.5m seems the most common.
I had a quote for some 15mm thick, 3/8" cell with 1mm aluminium facing sheets (you can have the faces in any material you like) from Technical
Resin Bonders of £205/sheet + VAT and delivery.
A similar product from Alcan was quoted at 64euros per sq metre so quite a bit cheaper.
The difference being that the TRB stuff is epoxy bonded so is stable to a higher temperature, but the peel strength is a lot lower than the Alcan
stuff.
David
PS this doesnt happen to be for a uni project does it?
[Edited on 7/2/06 by flak monkey]
Sera
http://www.motosera.com
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clbarclay
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| posted on 7/2/06 at 09:08 PM |
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Are there any good data sources on-line for these sheets, including:
Tensile strength
Elastic limit
Density
Modulas of elasticity
etc.
For standard aluminium honeycomb sheets?
[Edited on 7/2/06 by clbarclay]
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flak monkey
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| posted on 7/2/06 at 09:14 PM |
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In a word...nope.
They are anisotropic so its hard to give generalised figures.
All of those figures depend on the cell sizes and alloy, along with the adhesives used and the facing sheet materials.
There are some general figures here (right at the bottom of the page):
http://www.goodfellow.com/csp/active/STATIC/E/Aluminium.HTML
But as I say they only apply to that manufacturers products.
[Edited on 7/2/06 by flak monkey]
Sera
http://www.motosera.com
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clbarclay
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| posted on 7/2/06 at 09:23 PM |
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Too many blasted variables. 
However I would expect like with steel products, manufactures will tend to stick to a few common specifications for most applications.
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flak monkey
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| posted on 7/2/06 at 09:30 PM |
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Yes, some manufacturers stick to standard specs. But even then you cant give some figures as it varies depending on how you load the panel. One figure
I have for Youngs modulus is 70,000N/mm^2 if thats of use to you. (Based on a bog standard ali alloy used for facing skins) and obviously loaded along
the axis of the skins.
Bending is relatively easy, as nearly all the load is carried by the skins. So again it comes down to what aluminium alloy or composite is used for
them.
Any other analysis work done on them is horrible, but not as bad as fibre composites. Just be glad you arent looking at them!
David
PS Its taken me 2 months to get suppliers to give up some of this info...
[Edited on 7/2/06 by flak monkey]
Sera
http://www.motosera.com
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Volvorsport
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| posted on 7/2/06 at 09:32 PM |
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teklam
its fairly easy to work with , you need expensive epoxy glue , about twice the cost of normal aluminium honeycomb .
www.dbsmotorsport.co.uk
getting dirty under a bus
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locost_bryan
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| posted on 8/2/06 at 03:37 AM |
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try here http://www.hexcel.com/Products/Core%20Materials
Bryan Miller
Auckland NZ
Bruce McLaren - "Where's my F1 car?"
John Cooper - "In that rack of tubes, son"
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kestrel1596
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| posted on 8/2/06 at 05:10 AM |
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I remember an extremely brief mention of building with aluminum honeycomb (and a couple of interesting pictures of the "Gould honeycomb
monocoque") in Alan Staniforth's "Race and Rally Car Sourcebook".
One of the most impressive things was the size of the shed it was being built in.
[Edited on 8-2-2006 by kestrel1596]
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