Reliability Discussion Forum  

Go Back   Reliability Discussion Forum > Reliability Discussion Forums > ReliaSoft Reliability Software Forums > ALTA

Reply
 
Thread Tools Display Modes
  #1  
Old March 4th, 2014, 01:02 AM
Reda_Alstom Reda_Alstom is offline
Junior Member
 
Join Date: Mar 2014
Posts: 3
Default Alta test plan utility

Hello,

In order to establish an accelerated test plan using alta's test plan utility , one needs the Probabilities of failure at different stress levels , except that these probabilities require parameters Eta ( For a 2 parameter weibull distribution for instance ) at different stress levels which we can't understand because that is exactly what we want to extract after performing the accelerated tests.
Thank you for your support.
Reda
Reply With Quote
  #2  
Old March 4th, 2014, 08:24 AM
David David is offline
ReliaSoft Support
 
Join Date: Apr 2003
Location: Tucson, Arizona
Posts: 651
Default Re: Alta test plan utility

Hi Reda,

Welcome to the Reliability Discussion Forum!

The probabilities needed to create an accelerated test plan are estimates. Information for these inputs may come from previous tests or analyses for a similar product. Weibull++ can also be used to estimate what these values might be. An overview of this is presented at http://www.weibull.com/hotwire/issue...lbasics124.htm. See under the Example section which involves the use of the Parameter Experimenter. The article references Weibull++ 7 and ALTA 7, but the concepts are equally applicable to the current versions of Weibull++ 9 and ALTA 9.

I hope this helps.
__________________
David
Reply With Quote
  #3  
Old March 4th, 2014, 08:39 AM
Reda_Alstom Reda_Alstom is offline
Junior Member
 
Join Date: Mar 2014
Posts: 3
Default Re: Alta test plan utility

Thanks for the quick reply David. the link is very helpful.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 07:30 AM.


Powered by vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright 1992-2014 ReliaSoft Corporation, All Rights Reserved