Pressure Sensitive Paint / Film

[SarahL]

I am interested in using a pressure sensitive paint or film to measure what happens to some of our products when they are placed in silos or tote bins prior to final assembly.

I have found information on PSP's which react to different light colours for use in wind tunnels. This is not appropriate for what I am trying to do, as I will not be able to guarantee good lighting of the area.

Are their any suggestions out there, or experiences of using this kind of paint / film for applicaitons other than what they were designed for?

Thanks

 

[btrueblood]

Sarah,

Not sure if this is the stuff you are looking for:

http://www.sensorprod.com/

 

[unclesyd]

Here are some type of monitors we used in house to monitor the handling of various products forms. Most of ours were a more primitive variety but help to uncover some very rough handling problems.

http://www.brasspack.com/Damage_Indicator.html

http://www.isthq.com/main.asp?a=2&b=0&pageid=1&view=active

We also used “brittle lacquer” to indicate rough handling and storage problems.
Now of my sources for the lacquer are viable. I’ll keep looking for a source

 

[rhodie]

How about using chalk dust on the parts to gauge how much they are disturbed; less cost, non permanent coating...

 

[ctopher]

Try automotive or medical industries.

http://www.tifac.org.in/do/hgt/case/irrtemp.htm

http://www.autofieldguide.com/articles/080101.html

Chris
Sr. Mechanical Designer, CAD
SolidWorks 05 SP2.0 / PDMWorks 05
ctopher's home site

FAQ559-1100
FAQ559-716

 

[unclesyd]

rhodie's post triggered a neuron.
Instead of chalk dust you could use the Developer that is used in NDT for Dye Penetrant Testing. This material can be bought in an aerosol can and sprayed on the part and when dry becomes a very brittle white coating. The part can't be handle very much but will show any undue flexing or moving that may warrant further investigation. I have sprayed it with a light coat of Krylon Clear to keep down the smudges.

I use this material not only to find a crack but after all testing and repair are over I leave a good coating of the Developer on the areas of interest where at the next inspection a cursory look will quickly tell me to get the repair crew moving.