Determination of honeycomb volume

[MaxPlanck]

Dear all,

I'm looking for a technique for determining the volume (also including the inside of the flutes/channels) of honeycomb materials.
Immersing in a liquid (for example water) is not possible because this will detoriate the material.
Anyone has a good idea or has experience with this topic?

Many thanks in advance.
CL.

 

[Compositepro]

A pyncnometer could be used.

 

[Flareman]

MaxPlanck
Obviously we don't know your specific requirements, but weighing in water and weighing in air are really no different. If you know the density of the base material (paper for example) and can measure the outside (enclosing) volume, weigh the object and calculate the volume of "stuff" (paper?). The rest of the volume is the enclosed air.
It could be that your problem doesn't easily lend itself to a simplistic approach, but I tried!

David

 

[MaxPlanck]

Dear all,

Thanks for the replies.

Another idea:
First:
A: an empty bell-glass: vacuum sucking with a vacuum pump
B: open a valve on the bell-glass: atmospheric air (and pressure) goes into the glass: measure the volume of air which enters the glass.
Now you know the volume inside the bell-glass when it is empty.

Second:
C: put the honeycomb sample in the bell-glass and suck it vacuum
D: open a valve on the bell-glass: atmospheric air enters the glass: measure the volume of air passing through the valve.
Now we know the volume inside the bell-glass with the sample. Substracting both volumes should give the volume of the honeycomb sample only.

Has anyone experience with this kind of set-up? Would it be a good method?
Does anyone know a good, easy, and if possible a cheap, meter or method to measure the volume passing through the valve?

Many thanks,
Max