Reliability engineering

Reliability engineering is a sub-discipline of systems engineering that emphasizes the ability of equipment to function without failure. Reliability is quantitatively defined as the probability of a system or system component to function without failure for a specified period of time under stated conditions.

History

The concept of reliability engineering can be traced back to the early 20th century, when engineers began to realize the importance of reliability in design and manufacturing processes. The field gained significant attention during World War II, when the military required reliable equipment for successful operations. Since then, reliability engineering has evolved and expanded, becoming an integral part of industries such as aerospace, automotive, and electronics.

Principles

Reliability engineering is based on the principles of statistics, probability theory, and engineering. It involves the use of models to predict the life cycle of systems and components, and the application of these models to improve reliability. The key principles of reliability engineering include:

• Reliability Prediction: This involves predicting the future reliability of a product or system based on past performance data.
• Reliability Allocation: This involves allocating reliability goals to individual components in order to achieve the overall system reliability.
• Reliability Testing: This involves testing the reliability of a product or system under controlled conditions.

Applications

Reliability engineering is applied in various fields, including:

• Manufacturing: In manufacturing, reliability engineering is used to improve the reliability of products and reduce the cost of failures.
• Aerospace: In the aerospace industry, reliability engineering is used to ensure the safety and reliability of aircraft and spacecraft.
• Automotive: In the automotive industry, reliability engineering is used to improve the reliability and safety of vehicles.
• Electronics: In the electronics industry, reliability engineering is used to improve the reliability of electronic devices and systems.

See also

• Quality engineering
• Risk management
• Safety engineering
• Software reliability

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Reliability engineering gallery

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  Fault tree
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  Reliability block diagram