Thread: Cold in a Can
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Unread 23-06-2002, 22:17
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#0047 (ChiefDelphi)
  
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Thermal Shock Study available?
Posted by Raul.

Engineer on team #111, Wildstang, from Rolling Meadows & Wheeling HS and Motorola.

Posted on 12/20/99 6:18 AM MST


In Reply to: any port in a storm posted by Joe Johnson on 12/19/99 7:13 PM MST:




: Bottom line, I am sure that it is not good for the internals of the motors to have liquid cold stuffed sprayed on them, but, sometimes it is needed if you want to have full power in time for the next match (after all, it is the heat in the windings of the motor that is reducing the output, so the cooling is most needed inside right on the arrmature).

: Joe J.

OK, I have seen studies about how thermal shock can cause damage to some PC board components, IC's, etc. (especially surface mount). However, I have only heard rumors that thermal shocks such as those presented by inert coolants can damage other electrical components.

I understand the physics of thermal shocks and the resultant stresses induced by gradients and dissimilar materials. But, I also know that many materials are capable of withstanding these stresses in many applications.

I am a little skeptical. So, I would be curious to see if any studies have been done on motors for thermal shock. Does anyone know of a study done on this?

Raul


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