Book ChapterDOI
Fatigue Life Prediction of Structures
V. V. Bolotin
- pp 11-41
TLDR
In this paper, a model of fatigue crack initiation is discussed based on the concepts of continuum damage mechanics as well as the assumption that fatigue crack nuclei form Poissonian sets distributed in a body.Abstract:
Fatigue life prediction problems are discussed from the viewpoint of probabilistic mechanics of solids and structures. A survey of random factors in damage and fracture is presented with a special emphasis on the statistical scatter of mechanical properties of materials and/or structural components. A model of fatigue crack initiation is discussed based on the concepts of continuum damage mechanics as well as the assumption that fatigue crack nuclei form Poissonian sets distributed in a body. To describe macroscopic fatigue crack propagation, the theory proposed by author that takes into account the interaction between the microdamage accumulation along the crack trajectories and the global balance of forces, energy, etc. in the cracked body under loading is used. Various approaches to the modeling of material property fields are considered, and the influence of random factors from different sources on fatigue life is studied by means of numerical simulation. Discussion of alternative probabilistic approaches to modeling of fatigue damage is presented.read more
Citations
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Monte Carlo-based filtering for fatigue crack growth estimation
TL;DR: In this paper, a particle filter is applied to a structural prognostic problem and the filter is modified so as to estimate the distribution of the component's remaining lifetime on the basis of observations taken at predefined inspection times.
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Recent advances on notch effects in metal fatigue: A review
TL;DR: In this paper, the authors proposed a model for system reliability and safety at the University of Electronic Science and Technology of China, Chengdu, China Center for System Reliability & Safety.
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Computational framework for multiaxial fatigue life prediction of compressor discs considering notch effects
TL;DR: In this article, a computational framework for multiaxial fatigue analysis of compressor discs is established by coupling finite element (FE) simulation of stress gradient with Fatemi-Socie (FS) criterion.
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Energy field intensity approach for notch fatigue analysis
TL;DR: In this paper, a new concept of energy field intensity (EFI) is proposed and an EFI-based framework is established for notch fatigue analysis of engineering components under multiaxial stress states.
Journal ArticleDOI
Adopting lock-in infrared thermography technique for rapid determination of fatigue limit of aluminum alloy riveted component and affection to determined result caused by initial stress
TL;DR: In this paper, a lock-in infrared thermography technique was adopted to rapidly determine the fatigue limits of two kinds of riveted components, which were both made of 2A12 aluminum alloy and had different magnitudes of interference.
References
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Journal ArticleDOI
The Statistical Nature of Fatigue Crack Propagation
TL;DR: In this article, a statistical investigation of the fatigue crack propagation process was conducted and the results showed that the distribution of N as a function of crack length was best represented by the three-parameter log-normal distribution.
Journal ArticleDOI
Probabilistic Models of Cumulative Damage
Book
Random Fatigue: From Data to Theory
TL;DR: Fatigue of engineering materials - empirical background stochastic approach to fatigue - mathematical prerequisites random fatigue loads - statistical characteristics random fatigue - evolutionary probabilistic modelsrandom fatigue crack growth - cumulative jump models random fatigue crack grow - differential equation models, comparison and applications.