Fatigue & Fracture of Engineering Materials & Structures最新文献

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High-Cycle Fatigue Behavior of Duplex Stainless Steel Microstructures Obtained by Laser Beam Powder Bed Fusion Process 激光粉末床熔合制备双相不锈钢组织的高周疲劳行为
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-08-12 Epub Date: 2026-06-23 DOI: 10.1111/ffe.70343
Maxime Piras, Anis Hor, Eric Charkaluk
{"title":"High-Cycle Fatigue Behavior of Duplex Stainless Steel Microstructures Obtained by Laser Beam Powder Bed Fusion Process","authors":"Maxime Piras,&nbsp;Anis Hor,&nbsp;Eric Charkaluk","doi":"10.1111/ffe.70343","DOIUrl":"https://doi.org/10.1111/ffe.70343","url":null,"abstract":"<div>\u0000 \u0000 <p>Conventionally fabricated duplex stainless steels (DSSs) are well-known for their good fatigue, corrosion, and combined fatigue/corrosion performance. In laser beam powder bed fusion (PBF-LB/M), their fabricability and tensile behavior are increasingly studied, though literature highlights process-induced defects and the need for heat treatment to transform the fully ferritic as-built microstructure into a duplex (ferrite/austenite) state. Heat treatment can tailor grain size and reduce defects. This work investigates the interplay between microstructure and defects in tensile and torsional high-cycle fatigue of PBF-LB/M DSS. Three microstructures are examined: fully ferritic, fine-grained 50/50 duplex, and coarse-grained 50/50 duplex, with comparison to a hot-isostatically pressed condition to assess defect effects. The austenite-free microstructure is highly defects-sensitive, whereas duplex structures show reduced sensitivity, particularly under torsion. Fine grains enhance fatigue strength in both loading modes. These findings demonstrate how additive manufacturing-enabled microstructural design mitigates defect-sensitivity and inform heat treatment strategies for improved fatigue performance.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 9","pages":"3701-3719"},"PeriodicalIF":3.2,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710468","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
Fatigue Crack Modeling of Railheads Using a Nonlinear Cohesive Zone Model 基于非线性内聚区模型的铁路道头疲劳裂纹建模
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-08-12 Epub Date: 2026-06-28 DOI: 10.1111/ffe.70352
Santosh Reddy Kommidi, Hesam Mortazavi, Yong-Rak Kim, David H. Allen
{"title":"Fatigue Crack Modeling of Railheads Using a Nonlinear Cohesive Zone Model","authors":"Santosh Reddy Kommidi,&nbsp;Hesam Mortazavi,&nbsp;Yong-Rak Kim,&nbsp;David H. Allen","doi":"10.1111/ffe.70352","DOIUrl":"https://doi.org/10.1111/ffe.70352","url":null,"abstract":"<p>Subsurface fatigue crack growth within railheads can be deleterious leading to catastrophic failures in rails. This study aims to model the fatigue crack growth originating at the subsurface level within railheads. Towards that end, a finite element modeling approach is utilized wherein complex crack growth is explicitly modeled using a nonlinear cohesive zone (NCZ) model for the first time. The modeling demonstrates the capability to effectively simulate fatigue crack growth in rails. The parametric analysis conducted within this study indicates that the key NCZ parameters are effective indicators of rail fatigue life. It can lead to appropriate fracture characterization for predicting the fatigue crack growth rate and fatigue life of railheads found to contain pre-existing flaws. Model validation against experimental fatigue data of a rail specimen up to 200,000 cycles demonstrated that the NCZ model can reasonably capture crack growth in railheads, supporting its potential as a robust fatigue life prediction model. The simulated model results obtained herein indicate the feasibility of the NCZ for effectively predicting complex fatigue crack growth in rails induced by subsurface flaws in railheads, thereby potentially leading to an advanced mechanistic tool for predicting the service life of rail sections with properly detected subsurface flaws.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 9","pages":"3738-3750"},"PeriodicalIF":3.2,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.70352","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710410","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 Mechanisms and 3D Surface Morphology of Bedding Sandstone Under Asymmetric Loading 非对称载荷作用下层理砂岩断裂机理及三维表面形貌
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-08-12 Epub Date: 2026-06-30 DOI: 10.1111/ffe.70348
Yuguo Zhou, Hanpeng Wang, Dekang Sun, Bing Zhang, Junpeng Ma, Ruiqing Hao, Lin Liao, Wei Wang, Wenqi Zheng, Zhiling Liao
{"title":"Fracture Mechanisms and 3D Surface Morphology of Bedding Sandstone Under Asymmetric Loading","authors":"Yuguo Zhou,&nbsp;Hanpeng Wang,&nbsp;Dekang Sun,&nbsp;Bing Zhang,&nbsp;Junpeng Ma,&nbsp;Ruiqing Hao,&nbsp;Lin Liao,&nbsp;Wei Wang,&nbsp;Wenqi Zheng,&nbsp;Zhiling Liao","doi":"10.1111/ffe.70348","DOIUrl":"https://doi.org/10.1111/ffe.70348","url":null,"abstract":"<div>\u0000 \u0000 <p>Structural anisotropy has a significant impact on the fracturing of sedimentary rocks. However, many studies using asymmetric semicircular bending (ASCB) fail to examine the coupled effects of fracture modes, energy considerations, and three-dimensional (3D) surface characteristics. This study investigates Mode I, Mode II, and mixed-mode (I/II) fracturing in bedded sandstone at various orientations. The ASCB tests are integrated with high-resolution laser scanning to reconstruct 3D fracture surfaces, thereby quantifying anisotropy through directional roughness and fractal dimensions. An energy-based analysis is introduced to interpret fracture processes beyond peak-load criteria. The findings demonstrate systematic transitions from matrix-dominated cracking to bedding-controlled ruptures that reveal instabilities induced by tensile-shear interactions under mixed-mode (I/II) loading. By explicitly linking fracture modes, bedding orientations, energy partitioning, and 3D morphology, this framework enhances conventional ASCB analyses. It provides a comprehensive mechanistic foundation for predicting fractures and assessing the stability of bedded rock masses in geotechnical engineering.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 9","pages":"3783-3806"},"PeriodicalIF":3.2,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710432","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
The Theory of Critical Distances for Predicting the Static Failure of Double-Lap Bolted Joints With Conventional and Additively Manufactured 316L Stainless Steel Inner Plates 常规和增材制造316L不锈钢内板双搭螺栓连接静态破坏的临界距离预测理论
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-08-12 Epub Date: 2026-07-01 DOI: 10.1111/ffe.70349
Hasan Almuhanna, Giacomo Torelli, Luca Susmel
{"title":"The Theory of Critical Distances for Predicting the Static Failure of Double-Lap Bolted Joints With Conventional and Additively Manufactured 316L Stainless Steel Inner Plates","authors":"Hasan Almuhanna,&nbsp;Giacomo Torelli,&nbsp;Luca Susmel","doi":"10.1111/ffe.70349","DOIUrl":"https://doi.org/10.1111/ffe.70349","url":null,"abstract":"<p>This study assesses the accuracy of the theory of critical distances applied in the form of the point method in predicting the static strength of 316L stainless steel double-lap shear bolted connections under static tensile loading. Single- and double-bolt configurations were tested using inner plates manufactured from conventional material and from additively manufactured material, namely wire arc additive manufacturing and selective laser melting. The additively manufactured plates were assessed in both machined and as-built conditions and extracted at different printing orientations. Treating the bolt hole as a stress concentrator, linear elastic finite element stress fields were postprocessed to determine the point method effective stress from stress–distance curves extracted along different paths relative to the loading direction. The point method, calibrated using an inherent stress and a characteristic length estimated from 2-mm-thick conventional notched plates, provided generally good predictions for both conventional and additively manufactured plates. However, the prediction accuracy decreased for thicker as-built wire arc additively manufactured plates. Recalibrating the point method using wire arc additive manufacturing notched specimens with a comparable mean thickness improved the predictions for the thicker wire arc additively manufactured plates; however, a nonconservative bias remained. These findings confirm that the point method parameters calibrated using plain and notched specimens can be transferred to bolted joint assemblies.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 9","pages":"3831-3853"},"PeriodicalIF":3.2,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.70349","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710434","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
Physical Hierarchical Neural Network for Thermomechanical Fatigue Life Prediction of Compacted Graphite Cast Iron 基于物理层次神经网络的压实石墨铸铁热-机械疲劳寿命预测
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-08-12 Epub Date: 2026-06-30 DOI: 10.1111/ffe.70345
Yafei Fu, Guoxi Jing, Xinghao Yang, Xiuxiu Sun, Tian Ma, Guang Chen
{"title":"Physical Hierarchical Neural Network for Thermomechanical Fatigue Life Prediction of Compacted Graphite Cast Iron","authors":"Yafei Fu,&nbsp;Guoxi Jing,&nbsp;Xinghao Yang,&nbsp;Xiuxiu Sun,&nbsp;Tian Ma,&nbsp;Guang Chen","doi":"10.1111/ffe.70345","DOIUrl":"https://doi.org/10.1111/ffe.70345","url":null,"abstract":"<div>\u0000 \u0000 <p>A Physical Hierarchical Neural Network (PHNN) model was developed in this study for material-level thermomechanical fatigue (TMF) life prediction. First, TMF experiments were conducted on compacted graphite cast iron (CGI) to investigate the evolution of its mechanical properties during the testing process. Subsequently, existing low-cycle fatigue (LCF) tests were incorporated, and the input data were unified to establish a low-cycle-thermomechanical fatigue (LCF-TMF) experimental database. Finally, the predictive capability of the PHNN model for material-level TMF life prediction was evaluated and compared with that of the Sehitoglu model. The results indicate that the PHNN model exhibits higher prediction accuracy, stronger nonlinear fitting capability, and better extrapolation performance than the Sehitoglu model. These results demonstrate that the PHNN framework has been successfully applied to TMF life prediction of material, further enhancing its generality.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 9","pages":"3765-3782"},"PeriodicalIF":3.2,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710444","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
Survival Analysis of Fatigue Lifetime in Aged Elastomers Using Weibull and Cox Regression Models 基于Weibull和Cox回归模型的老化弹性体疲劳寿命存活分析
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-08-12 Epub Date: 2026-07-02 DOI: 10.1111/ffe.70344
M. Caillat, H. Madeira, P.-Y. Le Gac, M. Le Gall, E. Verron
{"title":"Survival Analysis of Fatigue Lifetime in Aged Elastomers Using Weibull and Cox Regression Models","authors":"M. Caillat,&nbsp;H. Madeira,&nbsp;P.-Y. Le Gac,&nbsp;M. Le Gall,&nbsp;E. Verron","doi":"10.1111/ffe.70344","DOIUrl":"https://doi.org/10.1111/ffe.70344","url":null,"abstract":"<p>Fatigue tests conducted on elastomers inherently exhibit significant variability. Aging may induce stiffening and embrittlement, leading to premature failures outside the specimen gauge length and resulting in right-censored data. Combined with the limited number of specimens, this leads to large uncertainties in fatigue lifetime estimation. This paper presents a survival analysis strategy to propose a probabilistic prediction of elastomers' fatigue lifetime during aging. The approach explicitly accounts for censored data and incorporates aging effects through material descriptors such as crosslink density. A Weibull parametric model and a semi-parametric Cox regression model with a frailty term are considered. Application to an experimental dataset shows that both models provide consistent predictions within the range supported by the data, while the Cox model offers increased flexibility by handling multiple aging-related covariates without prescribing a baseline distribution. The proposed framework complements Weibull-based approaches and provides a practical tool to quantify fatigue failure probabilities under data-limited aging conditions.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 9","pages":"3854-3873"},"PeriodicalIF":3.2,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.70344","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710436","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
2D Elastic–Plastic Finite Element Analysis of Kinematic and Kinetic Phenomena in Fretting Fatigue Testing 微动疲劳试验中运动和动力学现象的二维弹塑性有限元分析
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-08-12 Epub Date: 2026-06-16 DOI: 10.1111/ffe.70341
Mohammad M. I. Hammouda
{"title":"2D Elastic–Plastic Finite Element Analysis of Kinematic and Kinetic Phenomena in Fretting Fatigue Testing","authors":"Mohammad M. I. Hammouda","doi":"10.1111/ffe.70341","DOIUrl":"https://doi.org/10.1111/ffe.70341","url":null,"abstract":"<div>\u0000 \u0000 <p>Fretting under cyclic axial loading involves strong coupling between contact forces, relative slip, frictional work, and localized plastic deformation. This study presents a two-dimensional plane strain elastic–plastic finite element model of a cylindrical pad–flat configuration to investigate the evolution of contact mechanics over two successive axial stress cycles. The model is validated against the classical Hertzian elastic solution under normal loading. The evolution of contact deformation, sticking and sliding zones, and the onset of gross sliding are examined during loading and unloading, revealing pronounced cycle-dependent behavior. Redistribution of contact pressure and shear traction clarifies the transition from partial slip to gross sliding. A global–local framework is adopted to capture fretting fatigue behavior, which extracts of local relationships between normal force, tangential force, and relative slip at contact nodes. These are linked to the global evolution of shear force and accumulated frictional work, providing insight into fretting fatigue damage.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 9","pages":"3658-3672"},"PeriodicalIF":3.2,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710440","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
Miniaturization Effects and Orientation–Size Interplay in the Fatigue Behavior of AlSi10Mg Produced by Laser Powder Bed Fusion 激光粉末床熔合AlSi10Mg疲劳行为的微型化效应和取向尺寸相互作用
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-08-12 Epub Date: 2026-06-16 DOI: 10.1111/ffe.70337
Ahmad Issmail, Nima Razavi
{"title":"Miniaturization Effects and Orientation–Size Interplay in the Fatigue Behavior of AlSi10Mg Produced by Laser Powder Bed Fusion","authors":"Ahmad Issmail,&nbsp;Nima Razavi","doi":"10.1111/ffe.70337","DOIUrl":"https://doi.org/10.1111/ffe.70337","url":null,"abstract":"<div>\u0000 \u0000 <p>This study examines build-orientation and specimen-size effects on uniaxial fatigue behavior of PBF-LB AlSi10Mg, with emphasis on the representativeness of miniature specimens. Standard and miniature specimens were fabricated in three orientations and characterized in terms of microstructure, surface roughness, microhardness, and fatigue response. Fatigue failure mechanisms were analyzed, and killer defects were quantified and incorporated into the Murakami model to estimate the effective stress intensity factor (SIF). Unlike the trends commonly reported for AM metals, smaller specimens exhibited increased heat accumulation, resulting in improved surface finish and enhanced fatigue resistance. Miniature specimens consistently outperformed standard ones across orientations, with stronger size dependence in the 45° and horizontal conditions. An orientational anisotropy was observed, with vertical and horizontal specimens outperforming the 45° orientation. Despite the highest surface roughness and initiation defect sizes, horizontal specimens delivered the longest lives overall. SIF estimates indicated greater tolerance to stress concentrations in the horizontal orientation.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 9","pages":"3673-3700"},"PeriodicalIF":3.2,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710441","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 Literature Review on Advances in Data-Driven Research on Very High Cycle Fatigue: From Experiments to Prediction 甚高周疲劳数据驱动研究进展综述:从实验到预测
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-08-12 Epub Date: 2026-06-13 DOI: 10.1111/ffe.70327
Na Xu, Hongxian Wang, Jie Huang, Caijun Xue
{"title":"A Literature Review on Advances in Data-Driven Research on Very High Cycle Fatigue: From Experiments to Prediction","authors":"Na Xu,&nbsp;Hongxian Wang,&nbsp;Jie Huang,&nbsp;Caijun Xue","doi":"10.1111/ffe.70327","DOIUrl":"https://doi.org/10.1111/ffe.70327","url":null,"abstract":"<div>\u0000 \u0000 <p>With the increasing demand for ultra-long service life design of engineering components, research on very high cycle fatigue (VHCF) is confronted with critical challenges, including time-consuming fatigue tests, complex failure mechanisms, and sparse experimental data. This paper presents a systematic review of research advances in VHCF from a data-driven perspective. In terms of experimental methodologies, the evolution of ultrasonic fatigue testing systems is reviewed, highlighting advanced in situ monitoring techniques, linear active disturbance rejection control (LADRC) strategies, multiaxial proportional/nonproportional loading, and testing methods under extreme temperature environments. Regarding specimen design, size effect and adaptive specimen configurations are summarized, and a closed-loop numerical optimization framework for precise resonant volume matching is introduced. In terms of mechanistic analysis, the dynamic evolution characteristics of subsurface crack initiation under VHCF are revealed for various metallic materials, and the frequency strengthening effect under multiphysics coupling is elucidated. Finally, regarding fatigue life prediction, the multidimensional theoretical evolution is systematically reviewed, ranging from macroscopic phenomenological models and energy-based methods to defect/fracture mechanics models and ultimately to probabilistic statistical and extreme value models. To tackle the challenges posed by heterogeneous and limited fatigue data, the advantages of machine learning in processing complex fatigue datasets are evaluated, with a particular focus on the high predictive accuracy of physics-informed neural networks (PINNs). By embedding fundamental fatigue physics and constraints, PINNs achieve a profound bidirectional synergy between physical laws and data-driven modeling, significantly enhancing the model's generalization capability and extrapolative robustness.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 9","pages":"3616-3638"},"PeriodicalIF":3.2,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710530","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
Qualitative Analysis of the Influence of Cooling Time Δt8/5 on Paris Equation for HSLA Steel S960QL 冷却时间Δt8/5对HSLA钢S960QL Paris方程影响的定性分析
IF 3.2 2区 材料科学
Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2026-08-12 Epub Date: 2026-07-07 DOI: 10.1111/ffe.70359
I. Dunđer, P. Konjatić, M. Dunđer, I. Gelo
{"title":"Qualitative Analysis of the Influence of Cooling Time Δt8/5 on Paris Equation for HSLA Steel S960QL","authors":"I. Dunđer,&nbsp;P. Konjatić,&nbsp;M. Dunđer,&nbsp;I. Gelo","doi":"10.1111/ffe.70359","DOIUrl":"https://doi.org/10.1111/ffe.70359","url":null,"abstract":"<p>This paper examines the influence of cooling time in the temperature interval from 800°C to 500°C (Δ<i>t</i><sub>8/5</sub>) on the Paris law parameters <i>C</i> and <i>m</i> for HSLA steel. Fatigue crack growth tests were performed on specimens machined from S960QL steel plates subjected to different cooling times. The test specimens were prepared in accordance with ISO 148-1:2009, with a 2 mm deep V-notch introduced into each specimen. Experimental data obtained using a RUMUL Cracktronic 160-Nm resonant testing machine were used to determine crack growth rate diagrams as a function of the stress intensity factor range. Based on these diagrams, the Paris law parameters were calculated for different Δ<i>t</i><sub>8/5</sub> values. The results show that variations in cooling time significantly influence the parameters <i>C</i> and <i>m</i> and the fatigue crack growth behavior. In addition, a numerical analysis using the extended finite element method (XFEM) was carried out to verify fatigue life simulation models by implementing experimentally determined parameters for each cooling condition.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 9","pages":"3909-3918"},"PeriodicalIF":3.2,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.70359","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148710464","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
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