Aluminum Honeycomb versus Foam Sandwich Panels


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Weaponofchoice
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Hi guys, 

New in this forum. Great to see so many solutions and help provided by the members here.

I am looking to replace aluminium honeycomb with foam as a core material in the marine environment. There are some advantages listed below but maybe you guys can help with more detailed comparisons in terms of the technical differences between the 2 core materials. Feel free to add in the advantages or disadvantages below. Cheers. 

Advantages of the foam panels are as follows.

•    Lightweight - comparable weight to aluminium honeycomb.
•    Best cost to performance ratio, >200% saving compared to similar aluminium honeycomb panels.
•    Specific compression strength of the foam core was 72% higher than the compression strength of the aluminium core
•    No potential corrosion problems in a salt-water environment like aluminium honeycomb
•    Specific \ multi-layered density layup for individual requirements
•    Greater thermal and acoustic insulation compared to aluminum honeycomb
•    Can be processed into flat, curved or even compound shapes. Varying thickness within a panel can be achieved with a custom build.
•    Good screw retention for higher densities

Disdvantages of the foam panels are as follows.

• Lower flash point as compared to aluminium honeycomb(~600°C) versus foam (~200°C)
• Lower tensile strength per weight ratio 

Warren (Staff)
Warren (Staff)
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The best thing to do is get data sheets for the core materials you want to compare.  Most include stabilised and unstabilised data so you can do a fair comparison.


Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant
Weaponofchoice
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Warren (Staff) - 2/8/2018 9:12:22 AM
The best thing to do is get data sheets for the core materials you want to compare.  Most include stabilised and unstabilised data so you can do a fair comparison.

Thanks Warren, 

There are too many variations to compare but I just want to get a general view from the rest if any. Thanks.

Steve Broad
Steve Broad
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With regard to the lower flash point, does this really matter? If you have a heat source hot enough to heat the core to over 200 deg through the carbon, the flash point of the core material is the least of your problems :-)
Nafez Melhem
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Weaponofchoice - 2/8/2018 8:33:28 AM
Hi guys, 

New in this forum. Great to see so many solutions and help provided by the members here.

I am looking to replace aluminium honeycomb with foam as a core material in the marine environment. There are some advantages listed below but maybe you guys can help with more detailed comparisons in terms of the technical differences between the 2 core materials. Feel free to add in the advantages or disadvantages below. Cheers. 

Advantages of the foam panels are as follows.

•    Lightweight - comparable weight to aluminium honeycomb.
•    Best cost to performance ratio, >200% saving compared to similar aluminium honeycomb panels.
•    Specific compression strength of the foam core was 72% higher than the compression strength of the aluminium core
•    No potential corrosion problems in a salt-water environment like aluminium honeycomb
•    Specific \ multi-layered density layup for individual requirements
•    Greater thermal and acoustic insulation compared to aluminum honeycomb
•    Can be processed into flat, curved or even compound shapes. Varying thickness within a panel can be achieved with a custom build.
•    Good screw retention for higher densities

Disdvantages of the foam panels are as follows.

• Lower flash point as compared to aluminium honeycomb(~600°C) versus foam (~200°C)
• Lower tensile strength per weight ratio 

Hi to all,
I am wondering if this Forum is still active.
We are a new company specialized in Aluminum Foam Structural panel manufacturers. One of our first priorities is to offer an alternative solution for the Aluminum Honeycomb Panels
We are very confident that we can offer an equivalent or better product at better pricing using our new method for producing Aluminum Foam Panels, using the Powder metallurgy foam as the core section in combination with cladding surfaces from metals such as Aluminum, Steel,  Stainless steel, Titanium etc.. . We will be interest to join your group and possibly offer solutions to your questions. 
Nafez

taimur
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Nafez Melhem - 6/12/2020 10:48:38 AM
Weaponofchoice - 2/8/2018 8:33:28 AM
Hi guys, 

New in this forum. Great to see so many solutions and help provided by the members here.

I am looking to replace aluminium honeycomb with foam as a core material in the marine environment. There are some advantages listed below but maybe you guys can help with more detailed comparisons in terms of the technical differences between the 2 core materials. Feel free to add in the advantages or disadvantages below. Cheers. 

Advantages of the foam panels are as follows.

•    Lightweight - comparable weight to aluminium honeycomb.
•    Best cost to performance ratio, >200% saving compared to similar aluminium honeycomb panels.
•    Specific compression strength of the foam core was 72% higher than the compression strength of the aluminium core
•    No potential corrosion problems in a salt-water environment like aluminium honeycomb
•    Specific \ multi-layered density layup for individual requirements
•    Greater thermal and acoustic insulation compared to aluminum honeycomb
•    Can be processed into flat, curved or even compound shapes. Varying thickness within a panel can be achieved with a custom build.
•    Good screw retention for higher densities

Disdvantages of the foam panels are as follows.

• Lower flash point as compared to aluminium honeycomb(~600°C) versus foam (~200°C)
• Lower tensile strength per weight ratio 

Hi to all,
I am wondering if this Forum is still active.
We are a new company specialized in Aluminum Foam Structural panel manufacturers. One of our first priorities is to offer an alternative solution for the Aluminum Honeycomb Panels
We are very confident that we can offer an equivalent or better product at better pricing using our new method for producing Aluminum Foam Panels, using the Powder metallurgy foam as the core section in combination with cladding surfaces from metals such as Aluminum, Steel,  Stainless steel, Titanium etc.. . We will be interest to join your group and possibly offer solutions to your questions. 
Nafez





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