Fasta is right that in a number of situations, especially for this cores (where the weight of the bond-line is a more significant percentage of the overall core weight) that using a foam without an adhesive film (Rohacell IG-F for example) that you can reduce the overall weight of a sandwich panel. There's certainly nothing wrong with using aluminium or Nomex and there are situations where their properties are preferable over a foam but it's definitely something worth considering. Rohacell (which is a PMI foam) also has the advantage that is has a reasonably high temperature tolerance and so is well suited to use with prepregs.

Matt Statham
Easy Composites / Carbon Mods - Technical Sales

For  very light sandwich you can use PVC or acrylic foam core instead but without film glues and this could be lighter than any nomex or alloy honeycomb due to not using film glues.

Why did you switch from aramid fiber to aluminium honeycomb?

Yes, it would be fine to use the same adhesive film that you used for the aramid honeycomb with aluminium honeycomb. Make sure of course that the adhesive film has been stored frozen for the whole time since last year.

I hope this helps.

Matt Statham
Easy Composites / Carbon Mods - Technical Sales

Hi

I'm in FSAE Team and i'd like to make carbon fiber monocoque body

last year our Team use aramid fiber honey comb

This year we try to change core material (1/8 inch aramid fiber Honey comb ⇒ 1/8 inch aluminum Honey comb)

last year we use adhesive film to combine carbon and aramid honey comb

because we expect that film type adhesive will show even adhesion and it was corresponded our expectaion

by using aluminum honeycomb is it okay use same ahesive film in sandwich pannel??

if not which adhesive is good for aluminum honeycomb