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Two Methods for Analyzing Time-Varying Stress Data in ALTA

Accelerated life testing (ALT) is an essential tool in many life data analysis scenarios, due to the discrepancy between the long lifetimes of products and the short time periods allocated for product development. ALT allows you to shorten the testing time by observing failures more quickly via increasing the stress on the product. Hence, the goal of ALT is to relate the life of the product to the stresses it operates under.


Many types of products experience changing operating conditions (i.e., time-varying stresses) in the field. To accurately predict reliability for these products, you must account for this in your ALT data analysis by using the cumulative damage model. In this article, we will look at the cumulative damage model and compare two ways to implement it in ALTA.


Read the Latest Reliability News

ReliaSoft Attending Maintrel Conference in Dubai

Join us at the Maintrel conference in Dubai on April 19 - 21, 2016. ReliaSoft will be giving a presentation on Essential Considerations in Establishing a World-Class Asset Reliability Program, as well as hosting an exhibit booth. Please stop by and talk to our reliability engineering experts to learn more about reliability and maintenance solutions for the oil & gas industry. If you're not able to attend the conference, you can learn more about ReliaSoft’s oil & gas solutions here:


ReliaSoft’s Director of Software Development Featured in Podcast

Dare to Know, a podcast that highlights thought leaders in the fields of quality and reliability, showcased ReliaSoft’s Director of Software Development, David Groebel, in a recent episode. In the podcast, David discusses his work at ReliaSoft, the importance of a strong customer connection and the process of adding new features to the software. To listen to this episode, visit:


Excellent Presentation Awards at ARS Europe

On behalf of the reliability and maintainability community, we would like to thank all the presenters, sponsors and exhibitors at the 2016 ARS Europe in Munich for creating such an engaging experience for new and returning attendees. Also, many congratulations to the award winners of this Symposium's most excellent presentations (as voted by attendees).

  • Gold - Ronald Schop of Holland Innovative BV
    Reliability Validation Test Substantiation
  • Silver - John Cheale of Servogenics Ltd
    Hierarchical Functional Decomposition and Design FMEA
  • Bronze - Laura Frisk of Tampere University of Technology
    Polymers and Plastics from the Reliability Point of View

For more information, visit:

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