Fatigue & Fracture of Engineering Materials & Structures最新文献

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A Fatigue Strength Prediction Method for Ferrous Alloys Based on the CNN-GRU Model With Bayesian Optimization 基于CNN-GRU模型和贝叶斯优化的铁合金疲劳强度预测方法
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-07-02 Epub Date: 2026-05-28 DOI: 10.1111/ffe.70326
Song Bai, Chengcheng Guo, Jingchao Yan, Junyu Guo, Tingyu Zhang
{"title":"A Fatigue Strength Prediction Method for Ferrous Alloys Based on the CNN-GRU Model With Bayesian Optimization","authors":"Song Bai,&nbsp;Chengcheng Guo,&nbsp;Jingchao Yan,&nbsp;Junyu Guo,&nbsp;Tingyu Zhang","doi":"10.1111/ffe.70326","DOIUrl":"https://doi.org/10.1111/ffe.70326","url":null,"abstract":"<div>\u0000 \u0000 <p>Fatigue strength prediction is crucial for ensuring the structural integrity and durability of metallic components under cyclic loading. While traditional methods rely heavily on extensive experimental testing, recent advances in deep learning offer promising alternatives for ferrous alloys with unknown fatigue strength. This paper proposes a CNN-GRU model with Bayesian optimization (B-CNN-GRU)-based fatigue strength prediction method for ferrous alloys. The model integrates convolutional neural networks (CNN) for extracting local interaction patterns among neighboring descriptors and gated recurrent units (GRU) for capturing cross-feature sequential dependencies, enabling a comprehensive analysis of complex material descriptors. To enhance performance, Bayesian optimization is employed to automatically identify the optimal hyperparameters of the hybrid architecture. A dedicated dataset comprising 1753 samples with 20 features is constructed from a public materials database. Experimental results demonstrate that the proposed B-CNN-GRU model significantly outperforms other baseline models, including CNN, RNN, LSTM, GRU, and CNN-GRU, achieving superior performance with an <i>R</i><sup>2</sup> of 0.9913 and substantially lower MAE, RMSE, and MAPE. Further application studies on 35 unseen ferrous alloys confirm the model's excellent generalization capability, stability, and high prediction accuracy, showcasing its strong potential for practical engineering applications.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 8","pages":"3458-3471"},"PeriodicalIF":3.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deformation and Damage Mechanisms of 316L Stainless Steel Under Various Dwell Times and Modes of Creep-Thermomechanical Fatigue Interaction 316L不锈钢在不同停留时间和蠕变-热-机械疲劳交互作用模式下的变形与损伤机理
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-07-02 Epub Date: 2026-05-13 DOI: 10.1111/ffe.70317
Peng Yin, Wei Zhang, Qiaofa Yang, Xinghui Chen, Fei Liang, Cheng Ye, Changyu Zhou
{"title":"Deformation and Damage Mechanisms of 316L Stainless Steel Under Various Dwell Times and Modes of Creep-Thermomechanical Fatigue Interaction","authors":"Peng Yin,&nbsp;Wei Zhang,&nbsp;Qiaofa Yang,&nbsp;Xinghui Chen,&nbsp;Fei Liang,&nbsp;Cheng Ye,&nbsp;Changyu Zhou","doi":"10.1111/ffe.70317","DOIUrl":"https://doi.org/10.1111/ffe.70317","url":null,"abstract":"<div>\u0000 \u0000 <p>The creep-thermomechanical fatigue (CTMF) behavior and microscopic damage mechanisms of 316L austenitic stainless steel are investigated under in-phase loading conditions with different dwell times and dwell modes. The results show that increasing dwell time intensifies stress relaxation, reduces the stabilized peak tensile and compressive stresses, and broadens the hysteresis loops, leading to an increase in the inelastic strain range. Microstructural characterization indicates that the observed cyclic softening is mainly associated with thermally activated dynamic recovery, during which dense dislocation tangles progressively rearrange into lower-energy subgrain structures. The reduction in fatigue life is governed by the coupled effects of dwell-enhanced inelastic deformation, creep cavitation, and oxidation-related damage, with their relative contributions depending on dwell mode. Under tensile dwell, fatigue life decreases rapidly at short dwell times and then becomes less sensitive to further dwell extension, which is attributed to the competition between enhanced inelastic deformation/cavity formation and the crack-tip blunting effect of a thickened oxide layer. Under compressive dwell, brittle rupture of the oxide layer exposes fresh metal and thereby facilitates crack propagation, although the dwell-time sensitivity of fatigue life also weakens at longer hold times. In contrast, symmetric dwell causes the most severe degradation because the largest inelastic deformation is coupled with oxidation during tensile holding and oxide rupture during compressive holding.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 8","pages":"3326-3348"},"PeriodicalIF":3.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evolution of Mechanical Behaviors, Consolidation and Failure Mechanisms in Sandstone Materials Under Compressive Stress: The Role of Chemical Remediation Cycles 压应力作用下砂岩材料力学行为演化、固结与破坏机制:化学修复循环的作用
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-07-02 Epub Date: 2026-05-12 DOI: 10.1111/ffe.70320
Jun Li, Yong Niu, Yunjin Hu, Xueying Liu, Jinshuai Zhao, Lixu Deng
{"title":"Evolution of Mechanical Behaviors, Consolidation and Failure Mechanisms in Sandstone Materials Under Compressive Stress: The Role of Chemical Remediation Cycles","authors":"Jun Li,&nbsp;Yong Niu,&nbsp;Yunjin Hu,&nbsp;Xueying Liu,&nbsp;Jinshuai Zhao,&nbsp;Lixu Deng","doi":"10.1111/ffe.70320","DOIUrl":"https://doi.org/10.1111/ffe.70320","url":null,"abstract":"<div>\u0000 \u0000 <p>The mechanical properties of rocks are severely degraded by water–rock fatigue interaction, posing risks to the safety and stability of rock engineering structures. This study aims to consolidate sandstone materials affected by water–rock fatigue interaction using chemically induced calcium carbonate precipitation. Some observational techniques, including X-ray diffraction (XRD), nuclear magnetic resonance (NMR), and scanning electron microscopy (SEM), are employed to analyze the mineral composition and microstructural characteristics of chemically treated sandstone. Uniaxial compression tests integrated with acoustic emission (AE) monitoring are conducted on sandstone subjected to different chemical remediation (CR) cycles. The CR cycles significantly enhance the mechanical properties of sandstone. The original and water-weakened microscopic pores and cracks within the sandstone are filled by chemically induced calcium carbonate precipitation. The dominant frequency (D-F) and its corresponding amplitude of chemically treated sandstone are analyzed. The failure mechanism of chemically consolidated and water-weakened sandstone materials is revealed by the distribution of low and high D-F.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 8","pages":"3293-3308"},"PeriodicalIF":3.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Temperature, Low-Cycle, Stress-Controlled Fatigue Testing and Life Prediction of P92 and IN718 Incorporating Ratcheting and Notch Effects 考虑棘轮和缺口效应的P92和IN718的高温、低循环、应力控制疲劳试验和寿命预测
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-07-02 Epub Date: 2026-05-20 DOI: 10.1111/ffe.70319
Fei-Long Hua, Yang Shu, Kang-Kang Wang, Jing-Bo Yan, Peng Liu, Kai-Fa Fan, Ting Ye, Jian-Feng Wen, Xian-Cheng Zhang, Shan-Tung Tu
{"title":"High-Temperature, Low-Cycle, Stress-Controlled Fatigue Testing and Life Prediction of P92 and IN718 Incorporating Ratcheting and Notch Effects","authors":"Fei-Long Hua,&nbsp;Yang Shu,&nbsp;Kang-Kang Wang,&nbsp;Jing-Bo Yan,&nbsp;Peng Liu,&nbsp;Kai-Fa Fan,&nbsp;Ting Ye,&nbsp;Jian-Feng Wen,&nbsp;Xian-Cheng Zhang,&nbsp;Shan-Tung Tu","doi":"10.1111/ffe.70319","DOIUrl":"https://doi.org/10.1111/ffe.70319","url":null,"abstract":"<div>\u0000 \u0000 <p>Accurate fatigue life prediction is critical for structural integrity assessment, typically requiring simultaneous consideration of the coupled effects of low-cycle fatigue (LCF) and ratcheting. In this study, asymmetric stress-controlled LCF tests were conducted on smooth and notched specimens of P92 at 600°C and IN718 at 650°C. It was found that the notched specimens exhibited significantly lower overall ratcheting strain than the smooth specimens, attributed to notch-root stress support. Traditional approaches (e.g., the Manson–Coffin model) show noticeable discrepancies for notched components under asymmetric cyclic loading because ratcheting and notch effects are typically neglected. Based on a damage-evolution framework, a fatigue life model incorporating a stress gradient factor is proposed to account for notch influence. The resulting predictions for all cases fall within the ±2 scatter band, indicating a substantial improvement in predictive accuracy.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 8","pages":"3359-3377"},"PeriodicalIF":3.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Crack Propagation Mechanism and Damage Constitutive Model of Sandstone With Pre-Existing Flaw Under Multi-Stage Cyclic Loading and Unloading 含先存缺陷砂岩多级循环加卸载下裂纹扩展机制及损伤本构模型
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-07-02 Epub Date: 2026-05-20 DOI: 10.1111/ffe.70321
Xiaojing Li, Haichen Yu, Chong Yu, Yongan Ma, Qingwen Wen
{"title":"Crack Propagation Mechanism and Damage Constitutive Model of Sandstone With Pre-Existing Flaw Under Multi-Stage Cyclic Loading and Unloading","authors":"Xiaojing Li,&nbsp;Haichen Yu,&nbsp;Chong Yu,&nbsp;Yongan Ma,&nbsp;Qingwen Wen","doi":"10.1111/ffe.70321","DOIUrl":"https://doi.org/10.1111/ffe.70321","url":null,"abstract":"<div>\u0000 \u0000 <p>In mining, natural rock joints and fractures significantly impact slope stability. AE technology was employed to monitor the evolution of sandstone samples containing initial cracks under uniaxial multi-stage cyclic loading and unloading (MS-CLU), with analyses of mechanical performance, AE parameters, crack propagation, and damage evolution. The results indicate that AE counts, event numbers, and signal intensity rose as the tests progressed, whereas signal frequency and b-values declined. Sample failure was primarily governed by tensile cracks. Furthermore, with increasing initial crack inclination, sandstone's mechanical properties strengthened, and the proportion of tensile cracks initially rose and then declined. Additionally, this study introduced a new correction coefficient for the unloading stage, applied it in the damage constitutive model, improved model accuracy, and offered dependable theoretical support for assessing the safety of rock masses during staged excavation.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 8","pages":"3378-3403"},"PeriodicalIF":3.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating Crack Resistance Behavior of Polypropylene Using J integral, J-R Curve and Fractographic Analysis 用J积分、J- r曲线和断口分析研究聚丙烯的抗裂性能
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-07-02 Epub Date: 2026-05-21 DOI: 10.1111/ffe.70325
N. Choupani, M. Shameli, E. Haddadi, P. Aydiner
{"title":"Investigating Crack Resistance Behavior of Polypropylene Using J integral, J-R Curve and Fractographic Analysis","authors":"N. Choupani,&nbsp;M. Shameli,&nbsp;E. Haddadi,&nbsp;P. Aydiner","doi":"10.1111/ffe.70325","DOIUrl":"https://doi.org/10.1111/ffe.70325","url":null,"abstract":"<p>In this study, the fracture response of polypropylene (PP) was assessed using <i>J</i>-integral evaluation, <i>J-R</i> curve construction, and fractography examination. <i>J-R</i> and load–displacement curves were analyzed to determine critical loads and estimate <i>J</i>-integral values based on standards established for polymer fracture testing, which led to the evaluation of the <i>J</i><sub><i>IC</i></sub> fracture toughness parameter. Numerical validation was performed to obtain dimensionless stress intensity coefficients and geometry-dependent parameters, which resulted in <i>J-R</i> curves and <i>J</i><sub><i>IC</i></sub> values that were consistent with experimental observations. Experimental analysis indicated that the onset of plastic deformation at the crack tip leads to a significant increase in the <i>J</i> integral values compared with perfectly elastic behavior. Scanning electron microscopy revealed that as the crack propagated from the initiation point to the final fracture zone, both the magnitude and intensity of the surface peaks increased, indicating a rise in the material's resistance to crack propagation.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 8","pages":"3404-3419"},"PeriodicalIF":3.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.70325","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fracture Behavior of Additively Manufactured Topology-Graded Orthotropic Cellular ABS: Experiments and Effective-Continuum Modeling 增材制造拓扑梯度正交各向异性蜂窝ABS的断裂行为:实验和有效连续体建模
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-07-02 Epub Date: 2026-05-29 DOI: 10.1111/ffe.70329
Behnam Shahbazian, Navid Omidvar, Mirmilad Mirsayar
{"title":"Fracture Behavior of Additively Manufactured Topology-Graded Orthotropic Cellular ABS: Experiments and Effective-Continuum Modeling","authors":"Behnam Shahbazian,&nbsp;Navid Omidvar,&nbsp;Mirmilad Mirsayar","doi":"10.1111/ffe.70329","DOIUrl":"https://doi.org/10.1111/ffe.70329","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, a combination of experiments and an effective continuum modeling approach was employed to investigate the fracture initiation and crack paths in additively manufactured ABS cellular structures. With the use of single edge–cracked tensile specimens, the effects of raster angle (printing direction), graded void size, and crack placement relative to the void arrays were systematically studied. Experiments were conducted on several 3D-printed ABS samples, and their fracture responses were analyzed under tensile loading. To obtain a spatial map of the elasticity tensor, the modeling component of this study employs a MATLAB-based numerical homogenization method (periodic unit cell approach) that accounts for 2D orthotropic material behavior. The homogenized properties are then assigned to a 2D finite element model to compute crack-driving measures at the experimental failure loads. It is shown that the crack initiation angle is mainly controlled by material orthotropy (raster direction). While cracks initiate along the printing direction, crack deflection and blunting are dictated by the void arrangement and the crack-void alignment. Moreover, this study reveals that the homogenization step provides an acceptable first-order approximation of the spatially graded orthotropic mechanical properties across the discrete domain.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 8","pages":"3472-3490"},"PeriodicalIF":3.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Theoretical Predictions and Experimental Assessments of Fracture in Round-Tip V-Notched Orthotropic Samples Under Pure Compression 纯压缩条件下圆尖v形缺口正交各向异性试样断裂的理论预测与实验评价
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-07-02 Epub Date: 2026-05-13 DOI: 10.1111/ffe.70313
Javad Akbardoost, Mahdi Akbari, Ali Reza Torabi
{"title":"Theoretical Predictions and Experimental Assessments of Fracture in Round-Tip V-Notched Orthotropic Samples Under Pure Compression","authors":"Javad Akbardoost,&nbsp;Mahdi Akbari,&nbsp;Ali Reza Torabi","doi":"10.1111/ffe.70313","DOIUrl":"https://doi.org/10.1111/ffe.70313","url":null,"abstract":"<div>\u0000 \u0000 <p>In this paper, the fracture onset of rounded V-notched orthotropic specimens under pure compression, made of Canadian maple, is assessed. Compressive fracture tests are conducted on the square-shaped samples containing double-edge RV-shaped notches characterized by three different notch tip radii and a constant notch opening angle, up to fully development of cracking at the notch root is achieved. It is observed that the fracture loads across all specimens are nearly identical, despite noticeable variation in notch tip radii. It means that the fracture load may be independent of the notch radii. Moreover, the values of load-bearing capacity for tested samples are predicted by two conventional stress-based criteria, namely the point stress and mean stress integrated by the equivalent material concept for considering the notable nonlinear behavior and the virtual isotropic material concept to represent the orthotropic behavior of tested wood as an equivalent isotropic material. A good consistency between values of load-bearing capacity predicted by all fracture criteria employed and the experimental results is observed.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 8","pages":"3276-3292"},"PeriodicalIF":3.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Predicting the Size-Dependent Fatigue Strength Distributions in Additively Manufactured AlSi10Mg Alloy Specimens Using Extreme Value Statistics 用极值统计预测增材制造AlSi10Mg合金试样尺寸相关疲劳强度分布
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-07-02 Epub Date: 2026-05-09 DOI: 10.1111/ffe.70310
Tomasz Tomaszewski, Jan Papuga
{"title":"Predicting the Size-Dependent Fatigue Strength Distributions in Additively Manufactured AlSi10Mg Alloy Specimens Using Extreme Value Statistics","authors":"Tomasz Tomaszewski,&nbsp;Jan Papuga","doi":"10.1111/ffe.70310","DOIUrl":"https://doi.org/10.1111/ffe.70310","url":null,"abstract":"<div>\u0000 \u0000 <p>The paper presents an analysis of the selected models of the size effect on fatigue behavior of additively manufactured AlSi10Mg specimens. The predicted fatigue strength versus failure probability was assessed quantitatively in relation to high-cycle fatigue tests. The fatigue strength decreased as the specimen size increased. Analysis of the crack initiation revealed a correlation between the observed decrease in fatigue properties and increases in the effective defect size and in the specimen size. This relationship was approximated using the Shiozawa and the El-Haddad models. The weakest link theory, extreme defect size statistics, and defect size simulation were implemented to predict the fatigue strength distributions. The probabilistic modeling using the Monte Carlo method provided the smallest mean absolute percentage error of less than 1% for the selected analysis conditions.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 8","pages":"3198-3217"},"PeriodicalIF":3.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A PINN–XGBoost Hybrid Model for High-Cycle Fatigue Life Prediction of Mg Alloy Welded Joints 基于PINN-XGBoost混合模型的镁合金焊接接头高周疲劳寿命预测
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-07-02 Epub Date: 2026-05-11 DOI: 10.1111/ffe.70309
Haili Sun, Qi Dong, Jiaqi Zhang, Yuedong Wang
{"title":"A PINN–XGBoost Hybrid Model for High-Cycle Fatigue Life Prediction of Mg Alloy Welded Joints","authors":"Haili Sun,&nbsp;Qi Dong,&nbsp;Jiaqi Zhang,&nbsp;Yuedong Wang","doi":"10.1111/ffe.70309","DOIUrl":"https://doi.org/10.1111/ffe.70309","url":null,"abstract":"<div>\u0000 \u0000 <p>Mg alloy welded joints are increasingly used in lightweight structures, yet accurate prediction of their high-cycle fatigue life remains challenging, particularly under small-sample conditions. This study proposes a physics-informed PINN–XGBoost hybrid framework for fatigue life prediction. Physics-guided constraints derived from the Basquin relation and Goodman mean stress correction are incorporated into the PINN loss function to guide the model toward physically consistent fatigue trends under small-sample conditions. A static fusion model (Hybrid V1) and a dynamic physics-guided fusion model (Hybrid V2) are further developed to integrate PINN and XGBoost predictions. The proposed Hybrid V2 employs a learnable weighting network to enable sample-wise adaptive fusion. Results demonstrate that Hybrid V2 achieves superior prediction stability, generalization capability, and physical consistency across different fatigue regimes. Robustness is validated through different train–test splits and independent experimental fatigue data.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 8","pages":"3236-3251"},"PeriodicalIF":3.2,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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