In this issue:

Issue 82, December 2007

*Hot Topics
*Reliability Basics
*Tool Tips
*Latest Software Updates
*Hot News
*Contribute to HotWire

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Happy Holidays!

From all of us at ReliaSoft... we wish you a joyous holiday season and a new year of peace and happiness.

Hot Topics

Estimating Reliability Based on Multiple Random Stress Types
Products are affected by the stresses applied to them. This is an essential concept in quantifying and designing-in reliability, as emphasized by many design methodologies, such as Design for Reliability (DfR) analysis, Robust Design and Engineering Design By Reliability (EDBR). This article describes an approach to estimating the reliability of a product affected by multiple random stress types. ALTA 7 and Weibull++ 7 are used in the analysis.

To read more, see 

Reliability Basics

Analyzing Success/Failure and Reliability Data Using the Logistic Model
Last month's Reliability Basics article introduced success/failure data in the context of developmental testing reliability growth analysis and listed the models that can be used to analyze such data. In this month's article, we continue the discussion by highlighting the logistic model, available in RGA 6, and show its application to model success/failure data as well as another type of developmental growth data that consists of reliability values at different times or stages.

To read more, see 

Tool Tips
  • Can I schedule preventive maintenance or inspections during a Maintenance Phase in BlockSim?
  • Are there any issues with running ReliaSoft's software under the Windows Vista operating system?

To read more, see 

Latest Software Updates
New service releases are now available for BlockSim (SR 7.0.3), Xfmea Standard (SR 4.0.4), Xfmea Enterprise (SR 4.0.4) and RCM++ (SR 4.0.4). To determine the compile revision of the application on your computer, select About from the Help menu. More Software Downloads...


Application Date Created Version
BlockSim 7 11/12/07 7.0.3
Xfmea 4 Standard 11/16/07 4.0.4
Xfmea 4 Enterprise 11/16/07 4.0.4
RCM++ 4 11/16/07 4.0.4
Hot News
* ReliaSoft Makes a Major Donation to the University of Arkansas ReliaSoft is proud to announce a major donation to support the Department of Industrial Engineering in the College of Engineering at the University of Arkansas, Fayetteville. The donation of $714,227 will provide computer equipment, software, renovated research space and financial support for students and will establish the ReliaSoft Risk, Reliability, and Maintainability Research Alliance.  For the full press release, please see
* 54th Annual Reliability & Maintainability Symposium (RAMS) - ReliaSoft Corporation will be a participant and presenter at RAMS again this winter. This years presentations will include:

By Carl S. Carlson, ReliaSoft Corporation
This is the RAMS 2007 Alan Plait tutorial winner.

By Dr. Duane L. Dietrich, ReliaSoft Corporation

By Dr. Harry Guo, Adam Mettas and Arai Monteforte, ReliaSoft Corporation

By Dr. Harry Guo, ReliaSoft & Prof. Rong Pan, Arizona State University

RAMS 2008 will be held at the Palace Station Hotel & Casino in Las Vegas, Nevada on January 28-31, 2008. As always, our staff of reliability experts will be on hand to provide information and demonstrate the capabilities of ReliaSoft's complete suite of tools, including our Web-based XFRACAS application, so be sure to stop by our booth! For registration information and an advanced program, see

* North American ARS Proposal Submissions - We have been very pleased with the large turnout of qualified submissions for next years Applied Reliability Symposium. Now that the official submission date (Dec. 7th) has passed, our committee will work diligently to select our finalists. A special thank you goes out to everyone who participated in this years submission drive. It has been exciting to see so many professionals show interest.
Upcoming Public Training Event Calendar
January 2008
January 24 - 25, 2008: RS 401(C) Life Data Analysis (Condensed) in Bangalore, India
February 2008
February 4 - 8, 2008: MSMT Foundations in Frankfurt, Germany
February 20 - 22, 2008: RS 560 Introduction to Design for Reliability in Tucson, Arizona
February 25 - 29, 2008: MSMT Foundations in Tucson, Arizona
March 2008
March 10 - 14, 2008: MSMT Foundations in Singapore
March 17 - 19, 2008: RS 522 Advanced System Analysis in Tucson, Arizona
March 20 - 21, 2008: RS 470 FMEA/FMECA in Tucson, Arizona
March 26 - 28, 2008: International Applied Reliability Symposium in Frankfurt, Germany
March 31 - April 2, 2008: RS 521 Advanced QALT in Frankfurt, Germany
Contribute to HotWire
Contributions Welcomed
As always, your feedback and contributions are appreciated. ReliaSoft is able to provide the most user-friendly reliability software packages and support because we listen to our customers. This applies to our newsletters and publications as well. We welcome any suggestions or contributions you may have for Reliability HotWire. If you have a topic or article that you think would be useful to the readers of Reliability HotWire, feel free to contact us.

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