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E-raamat: Fatigue Limit in Metals [Wiley Online]

(University of Paris Ouest, LEME, Ville d'Avray, France)
  • Formaat: 128 pages
  • Sari: Focus Series
  • Ilmumisaeg: 29-Nov-2013
  • Kirjastus: ISTE Ltd and John Wiley & Sons Inc
  • ISBN-10: 1118648706
  • ISBN-13: 9781118648704
Teised raamatud teemal:
  • Wiley Online
  • Hind: 174,45 €*
  • * hind, mis tagab piiramatu üheaegsete kasutajate arvuga ligipääsu piiramatuks ajaks
Fatigue Limit in MetalsSuurem pilt
  • Formaat: 128 pages
  • Sari: Focus Series
  • Ilmumisaeg: 29-Nov-2013
  • Kirjastus: ISTE Ltd and John Wiley & Sons Inc
  • ISBN-10: 1118648706
  • ISBN-13: 9781118648704
Teised raamatud teemal:
Wiley Online e-raamatudRohkem infot Wiley Online kohta
Raamatu kodulehekülg: https://onlinelibrary.wiley.com/doi/book/10.1002/9781118648704
Is there a fatigue limit in metals? This question is the main focus of this book. Written by a leading researcher in the field, Claude Bathias presents a thorough and authoritative examination of the coupling between plasticity, crack initiation and heat dissipation for lifetimes that exceed the billion cycle, leading us to question the concept of the fatigue limit, both theoretically and technologically. This is a follow-up to the Fatigue of Materials and Structures series of books previously published in 2011. Contents

1. Introduction on Very High Cycle Fatigue. 2. Plasticity and Initiation in Gigacycle Fatigue. 3. Heating Dissipation in the Gigacycle Regime.

About the Authors

Claude Bathias is Emeritus Professor at the University of Paris 10-La Defense in France. He started his career as a research engineer in the aerospace and military industry where he remained for 20 years before becoming director of the CNRS laboratory ERA 914 at the University of Compiègne in France. He has launched two international conferences about fatigue: International Conference on the Fatigue of Composite Materials (ICFC) and Very High Cycle Fatigue (VHCF).

This new, up-to-date text supplements the book Fatigue of Materials and Structures, which had been previously published by ISTE and John Wiley in 2011. A thorough review of coupling between plasticity, crack priming, and thermal dissipation for lifespans higher than a billion of cycle has led us to question the concept of fatigue limit, from both the theoretical and technological point of view. This book will address that and more.
Acknowledgements vii
Chapter 1 Introduction on Very High Cycle Fatigue
1(16)
1.1 Fatigue limit, endurance limit and fatigue strength
1(4)
1.2 Absence of an asymptote on the SN curve
5(1)
1.3 Initiation and propagation
6(1)
1.4 Fatigue limit or fatigue strength
7(1)
1.5 SN curves up to 109 cycles
8(2)
1.6 Deterministic prediction of the gigacycle fatigue strength
10(2)
1.7 Gigacycle fatigue of alloys without flaws
12(1)
1.8 Initiation mechanisms at 109 cycles
13(1)
1.9 Conclusion
13(1)
1.10 Bibliography
14(3)
Chapter 2 Plasticity and Initiation in Gigacycle Fatigue
17(60)
2.1 Evolution of the initiation site from LCF to GCF
17(3)
2.2 Fish-eye growth
20(9)
2.2.1 Fracture surface analysis
20(3)
2.2.2 Plasticity in the GCF regime
23(6)
2.3 Stresses and crack tip intensity factors around spherical and cylindrical voids and inclusions
29(13)
2.3.1 Spherical cavities and inclusions
29(2)
2.3.2 Spherical inclusion
31(1)
2.3.3 Mismatched inclusion larger than the spherical cavity it occupies
31(2)
2.3.4 Cylindrical cavities and inclusions
33(2)
2.3.5 Cracking from a hemispherical surface void
35(3)
2.3.6 Crack tip stress intensity factors for cylindrical inclusions with misfit in both size and material properties
38(4)
2.4 Estimation of the fish-eye formation from the Paris-Hertzberg law
42(7)
2.4.1 "Short crack" number of cycles
47(1)
2.4.2 "Long crack" number of cycles
48(1)
2.4.3 "Below threshold" number of cycles
48(1)
2.5 Example of fish-eye formation in a bearing steel
49(3)
2.6 Fish-eye formation at the microscopic level
52(10)
2.6.1 Dark area observations
53(1)
2.6.2 "Penny-shaped area" observations
54(2)
2.6.3 Fracture surface with large radial ridges
56(3)
2.6.4 Identification of the models
59(3)
2.6.5 Conclusion
62(1)
2.7 Instability of microstructure in very high cycle fatigue (VHCF)
62(7)
2.8 Industrial practical case: damage tolerance at 109 cycles
69(5)
2.8.1 Fatigue threshold in N18
70(1)
2.8.2 Fatigue crack initiation of N18 alloy
71(2)
2.8.3 Mechanisms of the GCF of N18 alloy
73(1)
2.9 Bibliography
74(3)
Chapter 3 Heating Dissipation in the Gigacycle Regime
77(36)
3.1 Temperature increase at 20 kHz
77(4)
3.2 Detection of fish-eye formation
81(2)
3.3 Experimental verification of Nf by thermal dissipation
83(2)
3.4 Relation between thermal energy and cyclic plastic energy
85(4)
3.5 Effect of metallurgical instability at the yield point in ultrasonic fatigue
89(2)
3.6 Gigacycle fatigue of pure metals
91(18)
3.6.1 Microplasticity in the ferrite
95(2)
3.6.2 Effect of gigacycle fatigue loading on the yield stress in Armco iron
97(1)
3.6.3 Temperature measurement on Armco iron
98(4)
3.6.4 Intrinsic thermal dissipation in Armco iron
102(3)
3.6.5 Analysis of surface fatigue crack on iron
105(4)
3.7 Conclusion
109(1)
3.8 Bibliography
110(3)
Index 113
Claude Bathias is Emeritus Professor at the University of Paris 10-La Defense in France. He started his career as a research engineer in the aerospace and military industry where he remained for 20 years before becoming director of the CNRS laboratory ERA 914 at the University of Compiègne in France. He has launched two international conferences about fatigue: International Conference on the Fatigue of Composite Materials (ICFC) and Very High Cycle Fatigue (VHCF).
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