Inspection Tools for Flatness and Channel Depth of Bipolar Fuel Cell Plates

B

bmatsell

#1
Anyone have experience with measuring/inspecting features on bipolar fuel cell plates. Best technology or equipment? Any advive?

Important features are flatness over the plane and depth of channels.
 
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Stijloor

Staff member
Super Moderator
#2
Anyone have experience with measuring/inspecting features on bipolar fuel cell plates. Best technology or equipment? Any advice?

Important features are flatness over the plane and depth of channels.
Great question, but a sketch or drawing + specifications will always help to get better and quicker reponses.
We do not like to assume and guess.... Can you attach one?

Stijloor, Forum Moderator.
 
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B

bmatsell

#3
Plates are 300mm x 250mm and typical channel depths would be 0.370 mm with a tolerance of +/- .010 mm.
 
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Proud Liberal

Quite Involved in Discussions
#4
If flatness is truely what is wanted, the inspection should be done on a CMM. Other methods such as checking the gaps between the part and a calibrated plane (surface plate) or using jack stands and a height gage are approximations of flatness but not exactly the same thing. A lot depends on the application and what the designer really had in mind.
 

Hershal

Metrologist-Auditor
Staff member
Super Moderator
#5
If the plates are not contaminated with anything (e.g., just painted or similar), you might consider an auto-collimator. They are visual devices and measure visually.

CMM has been mentioned.

Vision machine, sometimes aka visual CMM is also an option.

Either of these three should provide accuracies that you need, though you will need to study a bit to verify that.

If you have more money, then also consider a laser interferometry approach.

Hope this helps.
 
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