TechNetters,

I have a clarification question?

In IPC-SM-785, there is a variable td (half cycle dwell time) used in the 
fatigue ductility exponent.  Is this the time it takes to go from Tsj to 
the hot (or cold) end and then return to Tsj?  In other words, if I 
considered the temperature cycle to be a sine wave, is it the time of ? 
cycle?

All comments welcome.

[log in to unmask]

***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]>   *
* with <subject: subscribe/unsubscribe> and no text in the body.          *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact   *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask]      *
***************************************************************************