20 Questions
What activity is focused on design for reliability and maintainability?
Maintainability
Which engineering analysis and test involves wear-out life prediction?
Wear-out life prediction
What is the key effectiveness measure derived from user needs and specified during system definition?
Availability
What is the main purpose of manufacturability/producibility analysis?
To ensure the system can be produced in a responsible and cost-effective manner
Why is manufacturability/producibility analysis considered an integral part of the SE process?
To minimize cost overruns associated with project delays
How do producibility considerations differ based on the type and number of systems being produced?
The consideration of production maintenance and downtime varies
What is the primary purpose of producibility analysis in manufacturing and production?
To simplify design, stabilize manufacturing process, and reduce risks and costs
What does RAM (Reliability, Availability, Maintainability) Engineering primarily aim to ensure?
The system performs without failure and is operational when needed
Why is availability often considered the most important quality characteristic from the user or acquirer perspective?
It can be easily translated to mission or production loss and increased costs
What is the primary focus of modern reliability approaches?
Prioritizing prevention of failures
Which standard is a reliability program standard for systems design, development, and manufacturing?
ANSI/GEIA-STD-0009
What is the main objective of a reliability program plan?
Capturing forward-looking strategies to achieve reliability objectives
Which engineering discipline is closely related to maintainability engineering?
Logistics engineering
What is the main objective of resilience engineering in systems?
Providing required capability when facing adversity
Which metric is commonly used to measure the elapsed time to perform maintenance activities?
Mean Time to Repair (MTTR)
Which of the following is not considered as a fundamental objective of resilience according to the taxonomy presented in the text?
Robustness
What is the term used to describe the ability of a system to adapt to deliver required capability in unpredictably evolving conditions?
Agility
According to the taxonomy presented in the text, what does 'Constrain' aim to achieve in terms of resilience objectives?
Limit the propagation of damage within the system
What does 'Disaggregation' involve according to the taxonomy presented in the text?
Dispersing missions, functions, or system elements across multiple systems or system elements
What does 'Situational Awareness' encompass according to the taxonomy presented in the text?
Perception of elements in the environment and comprehension of their meaning
Study Notes
- A maintainability engineering plan is used to capture activities related to maintainability, including quantitative modeling and simulation, system maintenance concept, level of repair analysis, diagnostic capabilities, and preventive maintenance.
- Maintainability engineering is closely related to logistics engineering.
- testability is an important aspect of maintainability, which includes built-in test capability, diagnostic test equipment, and support software.
- Service providers may use Over-the-Air (OTA) technology to remotely provide maintenance.
- Maintainability requirements should be derived from system availability requirements.
- Mean Time to Repair (MTTR) is a commonly used maintainability metric to measure the elapsed time to perform maintenance activities.
- MTTR refers to the mean time of the underlying probability distribution and maintenance times are often lognormally distributed.
- Reliability engineering, safety engineering, logistics engineering, affordability, resilience engineering, and reusability of products in a product line are related engineering disciplines to maintainability.
- The life cycle cost of a system is highly dependent on reliability and maintainability.
- Resilience engineering is an approach to provide required capability when facing adversity and it applies to cyber-physical, organizational, and conceptual systems.
- The objectives of resilience are avoiding, withstanding, and recovering from adversity.
- Resilience in engineering systems is the ability to provide required capability when facing adversity.
- Identifying the capabilities required of the system, adverse conditions under which it is required to deliver those capabilities, and the architecture and design that will ensure the system can provide the required capabilities is part of resilience engineering.
- Providing the required capability, not necessarily maintaining the architecture or composition of the system, is the goal of resilience.
- System continuity and adaptability are approaches to achieving resilience.
- Resilience engineering applies to all sources and types of adversity, including environmental and human sources, and system failure.
Learn about the two main groups of reliability engineering activities: engineering analyses and tests, and failure analyses, along with supporting reliability management activities. Understand the traditional design analyses, test methods, and various guidelines used during system development.
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