Home > Products > Reliability Prediction > Relex Reliability Prediction Models > Relex PRISM

Relex PRISM

Integrate With Relex Reliability Suite Adjust Base Failure Rate Using Rates of Field Failures Model Operating and Nonoperating Part Failure Rates Support Process Grading Methodology Use Bayesian Analysis to Adjust Failure Rate Prediction Incorporate Predecessor System Data to Estimate New Failure Rates EPRD and NPRD Data Sets Reliability of Software Model to Estimate Software Defects

Shedding New Light on Reliability Analysis

PRISM is a standard for MTBF prediction and system reliability analysis, originally developed by the Reliability Analysis Center (RAC). Relex has incorporated the RAC PRISM standard into our existing suite of reliability tools, creating a powerful module that offers the best of both worlds. Relex PRISM enables longtime RAC PRISM users to incorporate Relex features and capabilities into PRISM analyses, as well as allowing Relex users to use PRISM analysis techniques in analyses using other reliability standards. Additionally, failure rate information calculated using Relex PRISM is available to reference in Relex RBD, Relex Fault Tree, Relex FMEA and all other Relex modules. Relex's common database enables all Relex modules (and reliability models) to instantly share calculated data values. This level of interactivity and shared functionality is only available in the Relex Reliability Software Suite.

Process Grades

Relex PRISM enables you to apply process grades to your reliability analyses. Process grades account for the process-related variability around the assembly or system failure rate. They can modify your base reliability estimate for several different failure causes, including:

Design Manufacturing Parts Quality System Management CND

Induced Wearout Growth Infant Mortality

Questions you answer about the design, system, and other parameters establish a scoring profile whose total value is translated into a quantitative pi factor multiplier that impacts the predicted failure rate.

Bayesian Data Files

Bayesian analysis enables Relex PRISM to use test and field reliability data at the assembly level to enhance predicted component failure rates with real-life experiences and field failures. This allows you to integrate current reliability data when the actual failure rate prediction is calculated, thereby optimizing the reliability prediction based on valid historical data. Bayesian analysis accounts for the quantity of empirical data by weighting large datasets more heavily than small datasets.

Predecessor Data Files

Relex PRISM software allows you to incorporate predecessor data - using the reliability prediction of a previous product (or version) and its observed failure rate when estimating the reliability of a new product or system. This enables you to rely on both historical information as well as predicted information in calculating the overall reliability of the product or system.

PRISM Allows EPRD & NPRD Part Selection

Relex PRISM software gives you the ability to select parts from both the Electronic Parts Reliability Data (EPRD) and Nonelectronic Parts Reliability Data (NPRD) sets provided by the Reliability Analysis Center (RAC). EPRD provides failure data for a wide variety of components, including actuators, connectors, optoelectronic devices, inductive components, relays, solenoids, pumps, and more. Access to this substantial failure rate and reliability data greatly enhances your prediction analyses. Relex PRISM automates the merging process of both data sets, displaying NPRD and EPRD parts in the same table. Both EPRD and NPRD parts can be used in the other modules in the Relex Reliability Software Suite.

Relex PRISM also has a RACRates model for calculating the reliability of software. This model can estimate failures in your system due to software defects.

Complete Integration with Relex Modules and Reliability Models

Relex is the only set of reliability tools to incorporate the PRISM reliability standard. This integration provides benefits and increased capabilities in two ways.

• You can take advantage of the Relex flexibility, reporting features, parts libraries, and import/export features when creating an analysis using the PRISM standard. You can implement a Relex Mission Profile with PRISM calculations, use the CAD Import/Export Wizard^TM to import part information, acquire failure rate information from Relex Reliability Prediction, and use the Visual Report Designer to display your PRISM analyses.
• You can also use the unique PRISM concepts and capabilities for analyses using other reliability models. Providing that you have licensed the Relex PRISM reliability model, you can use Bayesian data analysis in a project based on the MIL-HDBK-217 standard, implement predecessor data with a Telcordia analysis, or apply the process grades unique to your organization to any of the reliability models.

Relex PRISM software provides an unprecedented level of power and flexibility for your analyses with the newest reliability standard.

Contact Relex
Phone: 724.836.8800 | Request Info | Email: info@relexsoftware.com

Copyright © 2009, Relex Software Corporation
Site Map | Search | Feedback | Privacy