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E-raamat: Reliability of Maintained Systems Subjected to Wear Failure Mechanisms: Theory and Applications

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  • Ilmumisaeg: 10-Apr-2019
  • Kirjastus: ISTE Ltd and John Wiley & Sons Inc
  • Keel: eng
  • ISBN-13: 9781119610656
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Reliability of Maintained Systems Subjected to Wear Failure Mechanisms: Theory and ApplicationsSuurem pilt
  • Formaat: EPUB+DRM
  • Ilmumisaeg: 10-Apr-2019
  • Kirjastus: ISTE Ltd and John Wiley & Sons Inc
  • Keel: eng
  • ISBN-13: 9781119610656
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Today, the reliability of systems has become a major issue in most industrial applications. The theoretical approach to estimating reliability was largely developed in the 1960s for maintenance-free systems, and more recently, in the late 1990s, it was developed for maintenance-based systems.

Customers’ expectations concerning reliability (as well as maintenance, safety, etc.) are growing ever more demanding over the generations of systems. However, the theoretical methods used to handle the systems are not suitable when aging mechanisms are present.

This book proposes a theoretical approach to estimate all of these quantities correctly. In addition to the theoretical aspect, it details a number of issues that any industrial system will meet sooner or later, whether due to design flaws, the batch of components, manufacturing problems or new technologies that result in the aging of mechanisms during their operational use.

Foreword ix
Christian Moreau
Foreword xi
Claude Sarno
Acknowledgments xiii
Introduction xv
List of Acronyms
xxi
List of Notations
xxiii
Chapter 1 Reliability of Systems Without Maintenance
1(40)
1.1 Classification of systems
4(1)
1.1.1 Maintenance-free systems
4(1)
1.1.2 Systems with maintenance
4(1)
1.2 Principal quantities of reliability
4(10)
1.2.1 The probability density
5(2)
1.2.2 The probability of failure
7(1)
1.2.3 The survival function
8(1)
1.2.4 The instantaneous failure rate
9(1)
1.2.5 The mode of a distribution
10(1)
1.2.6 The cumulative failure rate
11(1)
1.2.7 Links between different functions
11(1)
1.2.8 MTTF notion
12(1)
1.2.9 Residual lifespan
12(2)
1.3 The main distributions
14(17)
1.3.1 The exponential distribution
14(3)
1.3.2 The Weibull distribution
17(9)
1.3.3 Normal distribution
26(2)
1.3.4 The log-normal distribution
28(3)
1.4 Context
31(10)
1.4.1 Theoretical basis of JESD85
31(4)
1.4.2 Problem when there are no observed failures
35(1)
1.4.3 Theoretical analysis
36(2)
1.4.4 Example of a HTOL test on integrated circuits
38(3)
Chapter 2 Reliability of Systems with Maintenance
41(30)
2.1 Counting process
41(2)
2.2 Different types of maintenance
43(2)
2.3 Preventive maintenance
45(8)
2.3.1 General formulation
45(2)
2.3.2 Formulation for accidental failures
47(1)
2.3.3 Formulation for aging failures
47(6)
2.4 Corrective maintenance
53(18)
2.4.1 Hypothesis
53(1)
2.4.2 Renewal process
53(3)
2.4.3 Analytical solutions
56(15)
Chapter 3 Application to Aging Mechanisms with Maintenance
71(58)
3.1 Characteristics
71(1)
3.2 Approximate solutions
72(19)
3.2.1 The stabilization time of the Rocof is very low compared to the operational period
72(2)
3.2.2 The asymptotic value of the Rocof is never reached
74(2)
3.2.3 Other cases
76(15)
3.3 Generalizations
91(14)
3.3.1 Mix of distributions
91(1)
3.3.2 Competitive mechanisms
92(3)
3.3.3 Serial system
95(2)
3.3.4 Parallel systems
97(6)
3.3.5 "K/n" redundancy systems
103(1)
3.3.6 Summary
104(1)
3.4 Impact of physical factors
105(3)
3.5 Impact of the mission profile
108(21)
3.5.1 Sedyakin's principle
109(2)
3.5.2 Physical equivalent contribution with Sedyakin's principle
111(12)
3.5.3 Case of a heterogeneous profile
123(6)
Chapter 4 Impact at the Reliability Level
129(20)
4.1 Concept of MTBF
129(1)
4.2 Estimation of MTBF
130(4)
4.3 Impact of the delivery flow
134(1)
4.4 Example of a digital component with a fine engraving size
135(7)
4.4.1 Case where the Weibull shape parameter is equal to 1
135(3)
4.4.2 Case where the shape parameter is not equal to 1
138(4)
4.5 Application at the cost of a burn-in
142(7)
4.5.1 Cases where no burn-in is done
143(1)
4.5.2 Cases where a burn-in is done
144(5)
Chapter 5 Application to Maintenance
149(20)
5.1 Reliability growth
152(3)
5.2 BTN maintenance "Better than New"
155(3)
5.3 WTO "Worse than Old" maintenance
158(1)
5.4 Maintenance by attrition
159(2)
5.5 Maintenance on a complete subset
161(5)
5.5.1 Cases where we replace the defective system with a new one
162(1)
5.5.2 Cases where we replace the complete system with a new one
163(3)
5.6 Systems with k/n redundancy
166(3)
5.6.1 Cases where we replace the defective system with a new one
166(1)
5.6.2 Cases where we replace the complete system
167(2)
Chapter 6 Application to Safety
169(18)
6.1 Estimation of exposure time
170(1)
6.2 Case of components with aging
171(16)
6.2.1 Theoretical approach for systems with maintenance
172(1)
6.2.2 Case of catastrophic failures
172(1)
6.2.3 Case of aging failures
173(7)
6.2.4 OR gate
180(3)
6.2.5 AND gate
183(4)
Chapter 7 Maintenance Strategy in Operational Safety
187(6)
Appendix 193(4)
References 197(2)
Index 199
Franck Bayle is a reliability expert at Thales Avionics and has worked there for over twenty years in various related roles.
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