By Kailash C. Kapur
An built-in method of Product Development
Reliability Engineering offers an built-in method of the layout, engineering, and administration of reliability actions in the course of the existence cycle of a product, together with thought, study and improvement, layout, production, meeting, revenues, and repair. Containing illustrative courses that come with labored difficulties, numerical examples, homework difficulties, a recommendations guide, and class-tested fabrics, it demonstrates to product improvement and production execs tips on how to distribute key reliability practices all through an organization.
The authors clarify tips to combine reliability tools and strategies within the Six Sigma procedure and layout for 6 Sigma (DFSS). additionally they talk about relationships among guaranty and reliability, in addition to criminal and legal responsibility concerns. different issues lined include:
- Reliability engineering within the 21st Century
- Probability lifestyles distributions for reliability analysis
- Process keep watch over and strategy capability
- Failure modes, mechanisms, and results analysis
- Health tracking and prognostics
- Reliability exams and reliability estimation
Reliability Engineering offers a complete checklist of references at the themes coated in each one bankruptcy. it really is a useful source for these drawn to gaining primary wisdom of the sensible elements of reliability in layout, production, and checking out. additionally, it's valuable for implementation and administration of reliability courses.
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Additional info for Reliability Engineering
The importance of the hazard function is that it indicates the change in failure rate over the life of a population of devices. For example, two designs may provide the same reliability at a specific point in time; however, the hazard rates can differ over time. Accordingly, it is often useful to evaluate the cumulative hazard function, H(t). H(t) is given by: t H (t ) = ∫ h (τ ) d τ . 1. 30) or −d ln (R (t )) = h (t )dt. 32) τ =0 or t R (t ) = exp − h (τ )d τ = exp (−H (t )). 2. 7 is the histogram of hazard rate versus time.
This quantity is called a variate in statistics. , number of cycles) or continuous when they can take on any real value within a certain range of real numbers. Reliability Engineering, First Edition. Kailash C. Kapur and Michael Pecht. © 2014 John Wiley & Sons, Inc. Published 2014 by John Wiley & Sons, Inc. 2) where the caret above the variable indicates that it is an estimate. Similarly, the estimate of reliability, Rˆ (t ), of a product at time t is given by the ratio of operating (not failed) products per sample size or the underlying frame of reference: n (t ) Rˆ (t ) = S = 1− Qˆ (t ).
Anything the system affects is the customer. Thus, in addition to human beings and society, the environmental and future impacts of the product are considered in the program. 7 Conceptual relationship of life-cycle cost and different phases of life cycle. 8 Process development. System Focus. Emphasis is on system integration, synergy, and the inter dependence and interactions of all the parts of the system (hardware, software, human, and other elements). All the tools and methodologies of systems engineering and some of the developments in Design for Six Sigma (DFSS) (Chapter 4 in this book) are an integral part of this focus.