Nonlinear fatigue life prediction model based on the theory of the S‐N fatigue damage envelope

Bjørheim, Fredrik; Pavlou, Dimitrios G.; Siriwardane, Sudath C.

doi:10.1111/ffe.13680

Cited by 26 publications

(15 citation statements)

References 53 publications

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“…New fatigue damage accumulation models are still published each year. Most recent examples are the works Pavlou, 18 Bjørheim, 19 Yu et al, 20 and Zhu et al 21 But over the course of the last 70 years, not a single one has been widely accepted as an improvement over the much disputed Miner rule. Remarkably, the new models always appear to outperform selected models to which they are compared.…”

Section: Introductionmentioning

confidence: 99%

Method for statistical evaluation of cumulative damage models applied to block loading

Hectors

Hecke

Waele

2022

Fatigue Fract Eng Mat Struct

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There is an abundance of nonlinear fatigue damage accumulation models but a lack of verification and comparison to experimental datasets. First, an extensive two-level block loading experimental fatigue dataset is reprocessed according to current standard practice. Next, four nonlinear damage accumulation models and the Palmgren-Miner linear damage rule are critically compared using a range of statistical metrics. For the considered dataset, the Palmgren-Miner rule consistently performs worst and the damage curve approach is found to perform significantly better than the other nonlinear models. This study shows that the current practice of performance verification of new fatigue damage accumulation models in literature is too limited which enables cherry-picking of verification datasets to improve perceived performance.Future fatigue damage accumulation models should be verified much more rigorously to both readily available and new experimental datasets.

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Section: Introductionmentioning

confidence: 99%

Method for statistical evaluation of cumulative damage models applied to block loading

Hectors

Hecke

Waele

2022

Fatigue Fract Eng Mat Struct

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“…Considering the complexity of fatigue damage cumulation concerning the loading path, the isodamage lines in Subrahmanyan's model (Subramanyan, 1976; Bjørheim et al ., 2022a, b, c) are defined by two extreme lines. Specifically, one is the S–N curve of the material, which represents the total fatigue damage state (100%) of the specimen/component of interest; the other is the horizontal line through the fatigue limit of the material, which represents the initial or zero fatigue damage state of the specimen/component.…”

Section: Nonlinear Cumulative Damage Modelmentioning

confidence: 99%

Cumulative fatigue damage theories for metals: review and prospects

Liu,

2023

IJSI

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PurposeScholars mainly propose and establish theoretical models of cumulative fatigue damage for their research fields. This review aims to select the applicable model from many fatigue damage models according to the actual situation. However, relatively few models can be generally accepted and widely used.Design/methodology/approachThis review introduces the development of cumulative damage theory. Then, several typical models are selected from linear and nonlinear cumulative damage models to perform data analyses and obtain the fatigue life for the metal.FindingsConsidering the energy law and strength degradation, the nonlinear fatigue cumulative damage model can better reflect the fatigue damage under constant and multi-stage variable amplitude loading. In the following research, the complex uncertainty of the model in the fatigue damage process can be considered, as well as the combination of advanced machine learning techniques to reduce the prediction error.Originality/valueThis review compares the advantages and disadvantages of various mainstream cumulative damage research methods. It provides a reference for further research into the theories of cumulative fatigue damage.

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“…Most notably, new fatigue damage accumulation models are still published each year. A few of the most recent examples are the works of Pavlou [11], Bjørheim [12], Yu et al [13], and Zhu et al [14]. Nonetheless, an industry relevant breakthrough remains largely absent.…”

Section: Introductionmentioning

confidence: 99%

Open-Access Experiment Dataset for Fatigue Damage Accumulation and Life Prediction Models

Hectors

Vanspeybrouck

Plets

et al. 2023

Metals

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This work addresses the lack of focus on verification and comparison of existing fatigue damage accumulation and life prediction models on the basis of large and well-documented experiment datasets. Sixty-four constant amplitude, 54 two-level block loading, and 27 three-level block loading valid experiments were performed in order to generate an open-access, high-quality dataset that can be used as a benchmark for existing models. In the future, more experiments of various specimen geometries and loading conditions will be added. The obtained dataset was used for a study comparing five (non)linear fatigue damage and life prediction models. It is shown how the performance of several (non)linear damage models is strongly dependent on the considered material dataset and loading sequence. Therefore, it is important to verify models with a broad set of independent datasets, as many existing models show significant bias to certain datasets.

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Nonlinear fatigue life prediction model based on the theory of the S‐N fatigue damage envelope

Cited by 26 publications

References 53 publications

Method for statistical evaluation of cumulative damage models applied to block loading

Method for statistical evaluation of cumulative damage models applied to block loading

Cumulative fatigue damage theories for metals: review and prospects

Open-Access Experiment Dataset for Fatigue Damage Accumulation and Life Prediction Models

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