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Reliability engineering is the discipline of ensuring that a system will be reliable when operated in a specified manner. Reliability engineering is performed throughout the entire life cycle of a system, including development, test, production and operation.

Reliability may be defined in several ways:

  • The idea that something is fit for purpose with respect to time.
  • The capacity of a device or system to perform as designed;
  • The resistance to failure of a device or system;
  • The ability of a device or system to perform a required function under stated conditions for a specified period of time;
  • The probability that a functional unit will perform its required function for a specified interval under stated conditions.

Reliability engineers rely heavily on statistics, probability theory, and reliability theory. Many engineering techniques are used in reliability engineering, such as reliability prediction, Weibull analysis, thermal management, reliability testing and accelerated life testing. Because of the large number of reliability techniques, their expense, and the varying degrees of reliability required for different situations, most projects develop a reliability program plan to specify the reliability tasks that will be performed for that specific system.

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Item Software - Software for Reliability, Availability, Maintainability, Safety, and QA.
Meta Description: [ Reliability, Risk, and Safety Analysis Software and Services. ITEM ToolKit: Reliability Prediction, FMEA, Fault Tree, Reliability Block Diagram, Markov, Event Tree, Spare Cost, Maintainability, Life Cycle Cost. iQRAS: Quantitative Risk Assessment. Training and Consulting available in all areas. ]

MEADEP: System Reliability/Availabiltiy Analysis and PRediction - Software for reliability/availability modeling using Markov modeling, reliability block diagrams
Meta Description: [ System-level reliability & availability prediction modeling with powerful statistical analysis. MEADEP includes Reliability Block Diagram and Markov modeling capabilities. Repairable and non-repairable systems. ]

Rel + 5 Analysis System - Improves the reliability of electronic equipment and systems. Used to complete trade-off studies during the design process.
Meta Description: [ Leader in Reliability Engineering Improvement Software Tools ]

RelCalc for Windows - Reliability prediction software for MIL-HDBK-217 and Bellcore Mean Time Between Failures (MTBF) calculations.
Meta Description: [ MTBF Reliability Prediction Calculation Software for MIL-HDBK-217 and Telcordia / Bellcore - T-Cubed Systems, Inc. ]

Relex Reliability and Analysis Software - Integrated suite of software tools providing MTBF calculations through Reliability Prediction (MIL-HDBK-217, Telcordia [Bellcore], PRISM, others), RBD, Weibull, FMEA/FMECA, Maintainability Prediction, LCC, Markov, and FRACAS analyses.
Meta Description: [ Relex provides reliability software, training and services to improve reliability, availability, quality and safety. ]

Reliability Software and Fault Tree Software - Reliability Software, Safety Software, Availability Software, and ILS Software.
Meta Description: [ One Stop solution for all your Reliability Software RAMS FRACAS Fault Tree Software ILS LSAR Software, Training and Consultancy needs. ]

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