Fatigue & Fracture of Engineering Materials & Structures最新文献_第4页

Dislocation Structure Near the Intergranular Fracture Surface of Cyclically Strained Polycrystalline Copper 循环应变多晶铜晶间断口附近的位错结构

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-04-23 DOI: 10.1111/ffe.14663

Jaroslav Polák, Ladislav Poczklán, Tomáš Vražina

{"title":"Dislocation Structure Near the Intergranular Fracture Surface of Cyclically Strained Polycrystalline Copper","authors":"Jaroslav Polák, Ladislav Poczklán, Tomáš Vražina","doi":"10.1111/ffe.14663","DOIUrl":"https://doi.org/10.1111/ffe.14663","url":null,"abstract":"<div>\u0000 \u0000 <p>Polycrystalline copper specimens were cycled with strain amplitudes, resulting in fatigue lives ranging from 10<sup>5</sup> to 10<sup>7</sup> cycles. The fracture surfaces were inspected in the SEM, and intergranular facets with surface relief were studied. FIB sections were produced, and lamellae for the TEM were prepared using FIB sectioning. Individual persistent slip markings on the facets, consisting of distinctive extrusions and intrusions, were inclined at an angle to the surface corresponding to the trace of the primary slip plane. Dislocation structures close to the surface of the facets were observed and analyzed. The dislocation structure consisted of randomly distributed dislocations and some dislocation sub-boundaries. Contrary to the dislocation structure below the specimen surface, no specific dislocation structures corresponding to the persistent slip bands were found. The absence of localized cyclic strain-induced dislocation patterns was discussed and attributed to the complex stress and strain history within the cyclic plastic zone of the propagating crack, where multiple slip systems were active.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 7","pages":"3110-3121"},"PeriodicalIF":3.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213848","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

Macro–Meso Failure Behaviors of Weak Interlayer Contained Hollow Cylindrical Granite Exposed to Alternative Fatigue–Creep–Unloading Conditions 疲劳-蠕变-卸载交替条件下含弱夹层空心圆柱花岗岩宏细观破坏行为

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-04-23 DOI: 10.1111/ffe.14664

Xuefeng Yi, Yu Wang, Yingjie Xia, Peng Li, Meifeng Cai

{"title":"Macro–Meso Failure Behaviors of Weak Interlayer Contained Hollow Cylindrical Granite Exposed to Alternative Fatigue–Creep–Unloading Conditions","authors":"Xuefeng Yi, Yu Wang, Yingjie Xia, Peng Li, Meifeng Cai","doi":"10.1111/ffe.14664","DOIUrl":"https://doi.org/10.1111/ffe.14664","url":null,"abstract":"<div>\u0000 \u0000 <p>This study investigates the damage evolution and instability characteristics of hollow cylindrical granite with weak interlayers at 5°, 15°, 25°, and 35° inclinations under fatigue–creep–unloading conditions. Macro-mechanical tests, combined with real-time acoustic emission (AE) monitoring and post-test computed tomography (CT) scanning, were conducted to examine the effects of interlayer inclination on the stress–strain responses, AE patterns, damage evolution, and failure modes. Results show that volumetric deformation increases with inclination, reaching a minimum at 5° and a maximum at 35°. Specimens with lower inclinations produce more high-frequency, low-amplitude AE signals, but low-frequency, high-amplitude signals dominate at higher inclinations. A tensile-shear crack classification method based on the Kneedle algorithm was developed, revealing a higher proportion of shear fractures as the inclination increases. CT scans indicated that interlayer inclination affects mesoscopic failure mechanisms, with increasing inclination leading to smaller crack areas, lengths, and fractal dimensions. This suggests that the weak interlayer causes plastic flow and shear fracture formation.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 7","pages":"3092-3109"},"PeriodicalIF":3.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213847","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 De-Bonding Analysis of FRP-Reinforced Concrete Structures Considering Seawater Erosion 考虑海水侵蚀的frp钢筋混凝土结构疲劳脱粘分析

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-04-22 DOI: 10.1111/ffe.14661

Jie Liu, Wanyong Wang, Tong Guo, Libin Wang, Zhongxiang Liu

{"title":"Fatigue De-Bonding Analysis of FRP-Reinforced Concrete Structures Considering Seawater Erosion","authors":"Jie Liu, Wanyong Wang, Tong Guo, Libin Wang, Zhongxiang Liu","doi":"10.1111/ffe.14661","DOIUrl":"https://doi.org/10.1111/ffe.14661","url":null,"abstract":"<div>\u0000 \u0000 <p>This study experimentally investigates the fatigue behavior of FRP-concrete structures under marine-induced corrosion. Three seawater corrosion environments were simulated, with cyclic load ranges of 3901.8 N, 6503.0 N, and 9104.2 N. Three-stage degradation and three-stage growth models were identified by bond stiffness and residual slip accumulation, respectively. Fatigue strength decreased with seawater exposure, with more severe degradation under prolonged exposure. For example, under original-salinity dry-wet cycle condition with a load range of 3901.8 N, the cycle number of joints cured for 0, 30, 60, and 90 days were 1,763,238, 1,383,336, 1,219,779, and 1,073,708, respectively. The relationship between cycle number (<i>N</i><sub><i>f</i></sub>) and load range (Δ<i>F</i>) was fitted by a linear logarithmic curve, and a fatigue strength assessment model was proposed. The predicted values showed a maximum relative error of 7%, confirming the model's effectiveness in predicting fatigue strength under seawater corrosion.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 7","pages":"3078-3091"},"PeriodicalIF":3.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214230","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

Extended Moment Tensor Inversion for Fracture Mechanism of Cracks Using Energy of Acoustic Emission Waveforms 利用声发射波形能量反演裂纹断裂机制的扩展矩张量

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-04-22 DOI: 10.1111/ffe.14660

Yue Kong, Min Li, Yuanpei Hu, Houbiao Ma, Weimin Chen

{"title":"Extended Moment Tensor Inversion for Fracture Mechanism of Cracks Using Energy of Acoustic Emission Waveforms","authors":"Yue Kong, Min Li, Yuanpei Hu, Houbiao Ma, Weimin Chen","doi":"10.1111/ffe.14660","DOIUrl":"https://doi.org/10.1111/ffe.14660","url":null,"abstract":"<div>\u0000 \u0000 <p>The acoustic emission (AE) technology is commonly used for detecting cracks in aircrafts, and the moment tensor inversion is an advanced signal post-processing methodology for quantitatively calculating fracture mechanism. The inversion accuracy of the traditional inversion approach is significantly dependent on precisely recorded waveforms, which require high sampling frequencies of signal recording. For reducing the requirement of sampling frequencies, an extended inversion approach for moment tensors is proposed and the accumulated energy of the signals is used to invert for fracture mechanism. The synthetic tests show that the inversion accuracy of the new inversion approach is more stable for various sampling frequencies than that of the traditional displacement-based one. The inversion results calculated by the new approach are less sensitive to noise, and accurate results can be achieved by less sensors. Generally, the extended inversion approach can help evolve the structural health analysis of aircrafts significantly.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 7","pages":"3067-3077"},"PeriodicalIF":3.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214229","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

Numerical Assessment of Fatigue Damage Evolution at the Crack tip in AA2099 Al–Li Alloy Sheet AA2099铝锂合金薄板裂纹尖端疲劳损伤演化的数值评估

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-04-21 DOI: 10.1111/ffe.14659

Mengdi Li, Yongjie Liu, Weijiu Huang, Xusheng Yang, Xianghui Zhu, Xin Wang, Mofan Liu, Haipeng Dong

{"title":"Numerical Assessment of Fatigue Damage Evolution at the Crack tip in AA2099 Al–Li Alloy Sheet","authors":"Mengdi Li, Yongjie Liu, Weijiu Huang, Xusheng Yang, Xianghui Zhu, Xin Wang, Mofan Liu, Haipeng Dong","doi":"10.1111/ffe.14659","DOIUrl":"https://doi.org/10.1111/ffe.14659","url":null,"abstract":"<div>\u0000 \u0000 <p>Precipitate phase characteristics in Al–Li alloy sheet significantly influence damage evolution during fatigue crack propagation. To investigate the influence mechanisms, the present work establishes a cross-scale model that integrates the extended finite element method (XFEM) and the crystal plasticity finite element method (CPFEM) to elucidate the damage evolution at the crack tip. The results reveal that the T<sub>1</sub> phase facilitates the dislocation slip reversibility, with non-hardening slip retracting back to the crack tip, thereby reducing the cumulative damage. The accumulated shear strain could effectively predict the crack propagation paths. The planar slip effect of the <i>δ</i>′ phase significantly enhances the accumulated shear strain of the (1-11)[110] slip system, promoting single slip and resulting in a serrated propagation path. Conversely, the T<sub>1</sub> phase inhibits planar slip, enhancing the accumulated shear strain of multiple systems, and promoting multiple slip, leading to a relatively straight crack propagation path.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 7","pages":"3036-3049"},"PeriodicalIF":3.1,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214251","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

Thermo-Mechanical Fatigue Investigation of Inconel 718 Based on Miniature Specimen Testing 基于微型试样试验的Inconel 718热机械疲劳研究

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-04-21 DOI: 10.1111/ffe.14653

Harish Ramesh Babu, Marcus Thiele, Mario Raddatz, Uwe Gampe, Marco Böcker, Sebastian Henkel, Horst Biermann

{"title":"Thermo-Mechanical Fatigue Investigation of Inconel 718 Based on Miniature Specimen Testing","authors":"Harish Ramesh Babu, Marcus Thiele, Mario Raddatz, Uwe Gampe, Marco Böcker, Sebastian Henkel, Horst Biermann","doi":"10.1111/ffe.14653","DOIUrl":"https://doi.org/10.1111/ffe.14653","url":null,"abstract":"<p>Thermo-mechanical fatigue (TMF) is a critical degradation mechanism affecting gas turbine components. Testing under realistic loading conditions, such as TMF, is essential for these highly stressed, safety-relevant components. Most existing test setups utilize standard specimens that rarely represent the geometrical sizes of the actual engine components. Although there is interest in using smaller sized specimens to reduce material usage and allow for testing that closely resembles real-life conditions, only a few setups currently facilitate cyclic mechanical testing of small-scale specimens. This paper addresses the need for test rigs designed for TMF testing miniature specimens under realistic thermal gradients and mechanical loads. It focuses on developing a low-cycle fatigue miniature specimen test system validated with nickel-based superalloy Inconel 718. The study compares two specimen sizes to evaluate the impact of size, strain rates, and heating and cooling rates on fatigue life, applying cyclic temperature loading in both in-phase and out-of-phase loading conditions.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 7","pages":"3007-3018"},"PeriodicalIF":3.1,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14653","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214249","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

The Effects of Material Flow on Texture Evolution and Tensile Fracture Behaviors of Friction Stir Welded AZ40M/AZ61A Dissimilar Mg Alloys Joint 材料流动对AZ40M/AZ61A异种镁合金搅拌摩擦焊接接头织构演化及拉伸断裂行为的影响

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-04-21 DOI: 10.1111/ffe.14658

Liang Wang, Chengwu Cui, Peishan Zhou, Bin Wang, Hualin Zheng

{"title":"The Effects of Material Flow on Texture Evolution and Tensile Fracture Behaviors of Friction Stir Welded AZ40M/AZ61A Dissimilar Mg Alloys Joint","authors":"Liang Wang, Chengwu Cui, Peishan Zhou, Bin Wang, Hualin Zheng","doi":"10.1111/ffe.14658","DOIUrl":"https://doi.org/10.1111/ffe.14658","url":null,"abstract":"<div>\u0000 \u0000 <p>This study aims to elucidate the effects of material flow on texture evolution and tensile fracture behaviors of friction stir welding (FSW) AZ40M/AZ61A dissimilar Mg alloys joint. The stirring pin mainly affects the material flow between the middle and top of the stir zone (SZ). The SZ presented fine and equiaxed grains because of dynamic recrystallization (DRX), and the average grain size is 19.9 μm. The SZ center presented the strong typical basal texture with a texture intensity of about 63.333 times random distribution that deteriorates the joint mechanical properties. The yield strength of the dissimilar Mg alloy welded joint is 172 MPa, which is about 75% of the base metals. The AZ40M and SZ edge has the lowest hardness of 54.8 HV, which is the softened area of the joint, resulting in crack propagation and fracture during the tensile process. The tensile crack was initiated at the edge of the SZ near the AS with the lowest hardness and propagated along the SZ center. The crack path depended on the “onion-ring structure” and the second phase.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 7","pages":"3050-3066"},"PeriodicalIF":3.1,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214248","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

Enhancing the High-Temperature Rolling Contact Fatigue Performance of Carburizing 8620H Steel Through Ultrasonic Surface Rolling Process 超声表面轧制工艺提高渗碳8620H钢高温轧制接触疲劳性能

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-04-21 DOI: 10.1111/ffe.14657

Pengfei Sun, Hao Zhong, Xiaoqiang Li, Shengguan Qu

引用次数: 0

An Analytical Solution for the Interface Crack in a Quasi-Brittle Bonding Material 一类准脆性结合材料界面裂纹的解析解

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-04-16 DOI: 10.1111/ffe.14655

A. A. Kaminsky, M. V. Dudyk, Y. O. Chornoivan

引用次数: 0

Static and Fatigue Behavior of Kenaf/Glass Fiber Hybrid Composites With a Central Hole Under Tensile Loading 带有中心孔的红麻/玻璃纤维混杂复合材料在拉伸载荷下的静态和疲劳行为

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-04-16 DOI: 10.1111/ffe.14622

Mahtab Khodadadi, Seyed Abolfazl Mirdehghan, Hooshang Nosraty

{"title":"Static and Fatigue Behavior of Kenaf/Glass Fiber Hybrid Composites With a Central Hole Under Tensile Loading","authors":"Mahtab Khodadadi, Seyed Abolfazl Mirdehghan, Hooshang Nosraty","doi":"10.1111/ffe.14622","DOIUrl":"https://doi.org/10.1111/ffe.14622","url":null,"abstract":"<div>\u0000 \u0000 <p>In recent decades, natural fiber–reinforced composites in various applications have significantly developed. One of the critical properties of hybrid composites is their fatigue behavior, which affects the lifetime and application range of these materials, especially when the composite is drilled. This study is aimed at analyzing the fatigue behavior of the central open hole kenaf/glass multilayer hybrid composites. For this purpose, pure and hybrid kenaf/glass four-layer composite samples with different stacking sequences, with and without a central hole, were produced, and their tensile strength was evaluated. Afterward, the optimized hybrid composite (GKKG) and two pure glass (G4) and kenaf (K4) samples were analyzed under the fatigue tensile test at three stress levels. The results showed that the four-layer drilled pure glass sample exhibited the highest fatigue strength, enduring 115,000 cycles at a stress level of 50%. The drilled hybrid kenaf/glass sample (GKKG) also showed outstanding fatigue strength, bearing approximately 54,000 cycles at a stress level of 50%. The slope of the stress–logarithm(<i>N</i>) curve of the hybrid sample was considerably smaller than the pure glass. This indicates lower sensitivity of drilled hybrid composites reinforced with natural fibers to the fatigue loading.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 7","pages":"2978-2994"},"PeriodicalIF":3.1,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213843","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