TECHNET Archives

March 1997

TechNet@IPC.ORG
Options: Use Monospaced Font
Show Text Part by Default
Condense Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Received:
by ipc.org (Smail3.1.28.1 #2) id m0wAJwC-000BlKC; Thu, 27 Mar 97 12:30 CST
Encoding:
13 TEXT
Old-Return-Path:
<[log in to unmask]>
Date:
Thu, 27 Mar 1997 13:40:09 -0500
Precedence:
list
Resent-From:
[log in to unmask]
Message-ID:
<[log in to unmask]>
X-Status:
Status:
O
X-Mailing-List:
<[log in to unmask]> archive/latest/11530
TO:
"'IPC TechNet'" <[log in to unmask]>
Return-Path:
<TechNet-request>
Resent-Message-ID:
<"j7MWS3.0.qkL.nohEp"@ipc>
Subject:
Surface Mount Reliability
From:
"Bruning, Kenneth D" <[log in to unmask]>
From [log in to unmask] Thu Mar 27 12:
38:23 1997
X-Loop:
[log in to unmask]
X-Mailer:
Microsoft Exchange Server Internet Mail Connector Version 4.0.994.63
Resent-Sender:
TechNet-request [log in to unmask]
Parts/Attachments:
text/plain (26 lines) 
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]      *
***************************************************************************

ATOM RSS1 RSS2