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

Issue 58, December 2005

*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

Quantifying Optimum Burn-in Period

Early life failures are usually attributed to problems in the manufacturing, packaging and assembling phases. After making improvements to the greatest possible extent in these phases, the only way to improve the products reliability is to eliminate defective units before they reach customers. A common approach used to weed out defective and weak parts before shipping them to customers is burn-in. Burn-in has become a frequently-used procedure in many industries, especially the electronics industry. One common problem that industries face when dealing with burn-in is quantifying and optimizing the burn-in testing period. This article introduces a simple method to optimize the burn-in period and illustrates how this analysis can be performed in Weibull++.

To read more, see 

Reliability Basics

Monitoring Warranty Returns Using Statistical Process Control (SPC)

Warranty return predictions are important for companies because they help create an idea about the anticipated number of returns for each subsequent period, determine whether improvements are necessary if the expected returns are too high and determine how many spare parts to manufacture, allocate or ship to distributors in order to be better prepared for quick customer warranty claims fulfillment.


Warranty return predictions can also be used as a tool to verify whether actual experienced returns fall in line with expectations. By monitoring warranty return data, the analyst (and the organization) can detect specific return periods and/or batches of sales or shipments that deviate from the assumed model by comparing actual returns to the previously predicted returns. If the actual experienced returns number deviates significantly from the number that was predicted, this might raise a flag calling for further investigations or for actions to be taken to treat the problem. This provides the advantage of early notification of possible deviations in manufacturing, use conditions and/or any other factors that may adversely affect the reliability of the fielded product. Obviously, the motivation for performing such analysis is to allow for faster intervention to avoid increased costs due to increased warranty returns or more serious repercussions. This article will discuss a methodology for monitoring warranty returns using Statistical Process Control (SPC).

To read more, see 

Tool Tips
  • How can Failure Effect Categorization and Task Selection logic charts be customized in RCM++?

  • How can external documents be tied to analyses in RCM++ and Xfmea?

To read more, see 

Latest Software Updates
A new service release is now available for Weibull++ (SR 7.0.5). To determine the compile revision of the application on your computer, select About from the Help menu. More Software Downloads...


Application Date Created Version
Weibull++ 7    
Weibull++ 7 11/22/05 7.0.5
Weibull++ 7 Update N/A SR 7.0.5
Hot News
* Weibull++ 7 Network License Tool - Due to popular demand, ReliaSoft has now simplified the management of Weibull++ 7 multi-user network seats with a streamlined tool that resides at the server level. Ultimately, this tool will assist managers (and IT staff) with the task of making software available to the key people who need access. Now there is no more guessing. Simply pull up the list of active users in the RS Network User Management Console and reassign access rights as they are needed. In the near future, our R & D team will be working to integrate this management feature into all of ReliaSoft's existing network software packages. We will keep you posted.
* Applied Reliability Symposium, Orlando 2006 - Please mark your calendars and begin thinking about attending the 2006 Applied Reliability Symposium ( next June in Orlando, FL. The symposium has been booked for the Sheraton World Resort which is walking distance from Sea World and 5 minutes away from Walt Disney World and Universal Studios. Registrations are currently being accepted at
* RCM Training! - ReliaSoft has officially created its first Reliability Centered Maintenance training course. This two-day course presents an overview of the fundamental Reliability Centered Maintenance (RCM) techniques/procedures, including equipment selection, identifying functions and potential failure modes, evaluating the effects of failure and selecting appropriate maintenance tasks. ReliaSoft's RCM++ software will be used for hands-on application examples. Training will be held March 27-28, 2006 in Tucson, AZ. Additional information can be found at:
* 52nd Annual Reliability & Maintainability Symposium (RAMS) - ReliaSoft Corporation will be a participant at RAMS again this winter. The event is scheduled for January 23-26, 2006 at the Marriott Hotel in Newport Beach, California. Topics related to Reliability, Maintainability, Quality, Risk Management and Safety will be addressed as engineers are exposed to state-of-the-art methods for achieving their R&M objectives. For more information and an Advanced Program, see
* Holiday Hours - Please note that our Corporate Headquarters in the U.S. will be closed Dec. 23rd, Dec. 26th, 2005 and Jan. 2, 2006. We wish you all a Happy Holiday Season!
Public Training Event Calendar
February 2006
February 27 - March 3, 2006: MSMT Foundations in Tucson, Arizona
March 2006
March 27 - 29, 2006: RS 522 - Advanced System Analysis and BlockSim in Tucson, Arizona
March 27 - 29, 2006: RS 480 - Reliability Centered Maintenance and RCM++ in Tucson, Arizona
March 27 - 31, 2006: RS 470 - FMEA/FMECA and Xfmea in Tucson, Arizona
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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