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 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.
Contents
CHAPTER 1. INTRODUCTION ON VERY HIGH CYCLE FATIGUE
- 1.1. Fatigue limit, endurance limit and fatigue strength
- 1.2. Absence of an asymptote on the SN curve
- 1.3. Initiation and propagation
- 1.4. Fatigue limit or fatigue strength
- 1.5. SN curves up to 109 cycles
- 1.6. Deterministic prediction of the gigacycle fatigue strength
- 1.7. Gigacycle fatigue of alloys without flaws
- 1.8. Initiation mechanisms at 109 cycles
- 1.9. Conclusion
- 1.10. Bibliography
CHAPTER 2. PLASTICITY AND INITIATION IN GIGACYCLE FATIGUE
- 2.1. Evolution of the initiation site from LCF to GCF
- 2.2. Fish-eye growth
- 2.3. Stresses and crack tip intensity factors around spherical and cylindrical voids and inclusions
- 2.4. Estimation of the fish-eye formation from the Paris–Hertzberg law
- 2.5. Example of fish-eye formation in a bearing steel
- 2.6. Fish-eye formation at the microscopic level
- 2.7. Instability of microstructure in very high cycle fatigue (VHCF)
- 2.8. Industrial practical case: damage tolerance at 109 cycles
- 2.9. Bibliography
CHAPTER 3. HEATING DISSIPATION IN THE GIGACYCLE REGIME
- 3.1. Temperature increase at 20 kHz
- 3.2. Detection of fish-eye formation
- 3.3. Experimental verification of Nf by thermal dissipation
- 3.4. Relation between thermal energy and cyclic plastic energy
- 3.5. Effect of metallurgical instability at the yield point in ultrasonic fatigue 89
- 3.6. Gigacycle fatigue of pure metals
- 3.7. Conclusion
- 3.8. Bibliography
- INDEX
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).
Book Details
- Hardcover: 128 pages
- Publisher: Wiley-ISTE; 1 edition (December 16, 2013)
- Language: English
- ISBN-10: 1848214766
- ISBN-13: 978-1848214767
- Product Dimensions: 9.4 x 6.1 x 0.6 inches
- List price: $65.00