Reliability HotWire: eMagazine for the Reliability Professional
In this issue:

Issue 50, April 2005

*Hot Topics
*Reliability Basics
*Tool Tips
*Hot News
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Hot Topics

Standards Based Reliability Prediction: Applicability and Usage to Augment RBDs
Part I: Introduction to Standards Based Reliability Prediction and Lambda Predict

There are many situations in which you need to make a prediction about a products performance before the product is actually in production, by which point test data or warranty data should become available for analysis. In such situations, using a standards based reliability prediction tool becomes the best available approach. This article discusses the applicability, advantages and disadvantages of standards based reliability prediction.

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Reliability Basics

Introduction to the Temperature-Humidity Relationship

When performing accelerated life testing analysis, a life distribution and a life-stress relationship are required. The temperature-humidity (T-H) relationship, a variation of the Eyring relationship, has been proposed for predicting the life at use conditions when temperature and humidity are the accelerated stresses in a test. This article explains the characteristics of the T-H relationship and its parameters.

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Tool Tips
  • What is the purpose of the Algorithm Setup window in BlockSim?

  • How can two times-to-failure data sets be compared in ALTA?

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Hot News

ARS 2005 Coming Up Fast! Next months Applied Reliability Symposium will once again provide a forum for industry experts and reliability practitioners to discuss the practical application of reliability principles. Real world challenges and the success stories associated with them will be the primary focus. Don't miss this rapidly approaching event. Simply visit to register now. The Symposium is scheduled for May 1820, 2005 in sunny San Diego, CA.


Maintain-IT Seminars in UK this May In May, ReliaSoft's oil and gas distribution partner in the UK, Maintain-IT, is offering a practical 3-day workshop to engineers who are interested in gaining more technical knowledge. Case studies and practical examples, along with software packages provided by ReliaSoft, will be used to aid understanding and facilitate the learning process. For detailed course outlines, please visit:


The 9th International Conference on Structural Safety and Reliability - This conference, held every four years in different countries, will be held this year in Rome, Italy, June 19-23. ICOSSAR is a major international forum for the exchange of information and discussion on recent developments in, and innovative application of, concepts of structural safety and reliability. Visit for details.


Reliability Centered Maintenance (RCM) by ReliaSoft ReliaSoft continues its cutting edge progress with the development of a new and unique RCM software package titled RCM++. This software will facilitate analysis, data management and reporting for Reliability Centered Maintenance (RCM) analysis, along with integrated FMEA/FMECA capabilities. It will address the major industry standards and provide extensive customization options. Capabilities for database conversion from Xfmea and integration with Weibull++, ALTA and BlockSim are also available. For more information, please visit:

Public Training Event Calendar
April 2005
April 25 - 29, 2005: MSMT Foundations in Tucson, Arizona
April 27 - 29, 2005: Advanced System Reliability, Maintainability and Availability Analysis in Singapore
May 2005
May 18 - 20, 2005: 2005 International Applied Reliability Symposium in San Diego, California
June 2005
June 6 - 7, 2005: Failure Modes, Effects and Criticality Analysis and Xfmea in Singapore
June 8 - 10 2005: QALT Boot Camp and Reliability Growth Analysis and RGA in Tucson, Arizona
June 16 - 17, 2005: 2005 International Applied Reliability Symposium, South America in Rio de Janeiro, Brazil
June 27 - July 1, 2005: MSMT Foundations in Manchester, UK
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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