Fatigue & Fracture of Engineering Materials & Structures最新文献

{"title":"Predicting Airfield Pavement Fatigue Life Using Dynamic Coupling Models","authors":"Khair Ul Faisal Wani, Nallasivam Kanagaraj","doi":"10.1111/ffe.70391","DOIUrl":"https://doi.org/10.1111/ffe.70391","url":null,"abstract":"<div>\u0000 \u0000 <p>Aviation infrastructure is vital to the functioning of the airfields and requires the use of rigid airfield pavements, which are exposed to strong and repetitive cyclic loads and have to be extremely low-maintenance and durable. The traditional pavement models use the simple Winkler spring foundation, which does not consider the transfer of shear stress between neighboring soil layers. In addition, many pre-existing dynamic analysis tools simplify the moving aeronautical forces to static or lower degrees of freedom (one-DOF to four-DOF) configurations, which leaves a significant research gap as to how “true” multidimensional aircraft suspension dynamics and runway surface irregularities interact to influence cycle-by-cycle fatigue life. This study aims to fill this gap with the development of a comprehensive 3D vehicle-pavement interaction (VPI) simulation model. The purpose of the model is to deliver a realistic prediction of the cumulative damage index and remaining service life of a rigid airfield runway following realistic, variable amplitude aeronautical stressors and operational parameters. A modified and computationally-efficient finite element framework for aircraft-pavement interaction was created using MATLAB, which included a 3-D, six-DOF aircraft model with realistic multiwheel landing gear and suspension characteristics, and a 1D FE pavement model. The pavement subgrade is mathematically represented using a two-parameter model of a Pasternak foundation to adequately model localized shear layer deformations. The time domain simulations of pavement surface roughness are generated by a technique called power spectral density (PSD) functions. The dynamic equations of motion solution is used to solve the dynamic equations of motion in order to generate high-fidelity pavement stress histories using the Newmark-<i>β</i> integration scheme. Lastly, these dynamic stress fluctuations pass through a Rainflow cycle counting algorithm and are compared to Miner's linear damage rule to determine the cumulative fatigue life. Parametric evaluation indicates that there are two major design drivers: pavement slab thickness and subgrade modulus. In particular, the simulated fatigue life increases by almost 90% (from 28.83 to 54.78 years) with a thickness increase from 0.1 to 0.7 m of the slab. Likewise, the subgrade modulus can be increased to yield up to a 54.9% improvement in durability. Using normal concrete and high-grade concrete mix design (M30 to M50) extends the life by 31.4%. On the other hand, adverse operating conditions have a dramatic effect on structural integrity—a rough surface on the runway increases damage and reduces pavement life by as much as 71.9%, aircraft mass reduces it by 14.7%, and asymmetric gear load distribution reduces service life by as much as 21%. This work offers a very comprehensive and efficient prediction model that is capable of building a complex 3D landing gear dynamic model and succes","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 11","pages":"4527-4551"},"PeriodicalIF":3.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099481","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}

{"title":"Fatigue of AM TiAl6V4: Probabilistic Modelling of the Size Influence as a Transfer Method From Test Specimen to Part","authors":"Sebastian Mansky,&nbsp;Dirk Herzog,&nbsp;Ingomar Kelbassa","doi":"10.1111/ffe.70397","DOIUrl":"https://doi.org/10.1111/ffe.70397","url":null,"abstract":"<p>This paper investigates the fatigue behavior of additively manufactured TiAl6V4 by comparing two specimen geometries with different highly stressed volumes. A fracture mechanical approach based on the El-Haddad–Smith–Topper model is combined with defect analysis through X-ray computed tomography. A combined generalized extreme value and generalized Pareto distribution framework correlates defect size distributions with failure probability across all stress levels. Results show that larger highly stressed volumes increase failure susceptibility due to higher likelihood of critical defects, reducing the fatigue stress range at 50% failure probability from 882 to 611MPa. For topology-optimized parts, components with localized stress concentrations are less susceptible to defects than those with homogeneous stress distributions. The highly stressed volume approach can yield misleading results for such geometries. The methodology enables transfer of laboratory results to components by integrating stress states, defect statistics, and volume effects.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 11","pages":"4586-4606"},"PeriodicalIF":3.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.70397","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099483","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}

{"title":"Probabilistic Fatigue Crack Growth Prediction With Improved Particle Filter and Multiple Models","authors":"Yi Li,&nbsp;Hong-Shuang Li,&nbsp;Hao-Yu Zhang,&nbsp;Xu-Teng Hu,&nbsp;Yuan-Zhuo Ma","doi":"10.1111/ffe.70398","DOIUrl":"https://doi.org/10.1111/ffe.70398","url":null,"abstract":"<div>\u0000 \u0000 <p>Predicting fatigue crack growth (FCG) is critical for structural safety and reliability, but it is severely challenged by inherent material uncertainties and the limitations of any single physical model. This study proposes a probabilistic FCG prediction method that integrates an improved particle filter (PF) and a Bayesian fusion for multiple FCG models. To alleviate post-resampling particle impoverishment, a component-wise modified Metropolis–Hastings (MMH) move algorithm is introduced as a particle rejuvenation step after resampling, which is designed to preserve particle diversity more effectively than the conventional resampling strategies. Furthermore, the Bayesian fusion dynamically weighs multiple FCG models (Paris–Erdogan, Kujawski, Forman, Nasgro), enabling mitigation of single-model bias. The proposed method was applied on the FCG prediction of a group of compact-tension (CT) specimens that have undergone experimental testing. Comparisons between the predicted and experimental results demonstrate that the proposed method provides more accurate FCG prediction in most of the CT specimens and the corresponding 95% confidence intervals (CIs) can encompass the measured crack paths.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 11","pages":"4726-4764"},"PeriodicalIF":3.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099747","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}

{"title":"Fatigue Damage of AA2024 Fiber–Metal Laminates With Architected TPU Interlayers and Graphene-Modified Interfaces","authors":"Acharya Jitendra Yashwant,&nbsp;Logesh Kamaraj,&nbsp;Hariharasakthisudhan Ponnarengan","doi":"10.1111/ffe.70407","DOIUrl":"https://doi.org/10.1111/ffe.70407","url":null,"abstract":"<div>\u0000 \u0000 <p>This study investigates the fatigue behavior of Aluminum 2024 fiber–metal laminates incorporating three-dimensionally printed thermoplastic polyurethane core architectures and graphene-modified adhesive interfaces. Three core geometries, namely, diagonal, diamond, and hexagonal patterns, were evaluated with graphene contents of 0, 1.0, and 1.5 wt.% under different cyclic stress ratios. Mechanical and fatigue results showed that graphene-modified interfaces and architected elastomer cores significantly improved load transfer, energy dissipation, and cyclic damage resistance. Tensile strength increased from 387.02 to 493.34 MPa, whereas impact energy improved from 12.18 to 24.02 J. The diamond architecture with 1.5-wt.% graphene exhibited superior fatigue resistance, sustaining approximately 260–270 MPa at one million cycles. Stiffness degradation and accumulated strain analyses confirmed delayed damage evolution, improved stiffness retention, and reduced cyclic deformation. Fractographic observations indicated fiber bridging, fibrillar pull-out, crack deflection, and limited delamination as dominant fatigue resistance mechanisms.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 11","pages":"4652-4676"},"PeriodicalIF":3.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099748","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}

{"title":"A Nonlinear-Coupled Generalized Strain Energy Model With Dynamic Mean Shear Stress Sensitivity for Biaxial Fatigue Life Prediction","authors":"Enhong Wang,&nbsp;Xiaowei Wang,&nbsp;Zhenkun Guo,&nbsp;Yu Fang,&nbsp;Qin Shen,&nbsp;Liqiang Zhang","doi":"10.1111/ffe.70388","DOIUrl":"https://doi.org/10.1111/ffe.70388","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper proposes an improved generalized strain energy damage parameter model based on the critical plane method to predict fatigue life under biaxial loading conditions. The model comprehensively characterizes the energy dissipation mechanisms during crack initiation and propagation by nonlinearly coupling shear strain energy with normal strain energy. The model systematically characterizes the effects of mean stress and nonproportional hardening by incorporating the maximum normal stress and absolute shear mean stress terms. Furthermore, the paper establishes a dynamic mean shear stress sensitivity coefficient, enabling adaptive reflection of material-specific responses to mean shear stress without requiring predefined weighting parameters. Independent of additional material constants, the model is applicable to uniaxial, proportional, and nonproportional biaxial loading paths. The model is validated using 187 sets of experimental data from six materials under 19 loading paths, primarily focusing on typical biaxial scenarios. Results demonstrate excellent predictive accuracy of the proposed model across diverse loading conditions: 88.5%, 94.6%, and 97.2% of predictions fall within the life factor of three for uniaxial loading, proportional, and nonproportional biaxial tension–torsion conditions, respectively.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 11","pages":"4638-4651"},"PeriodicalIF":3.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099836","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}

{"title":"Fretting Fatigue Failure of TC4-CFRP Double-Riveted Structures","authors":"Jianhua Liu,&nbsp;Peng Lin,&nbsp;Zhongfeng Weng,&nbsp;Yue Zhao,&nbsp;Yulin He,&nbsp;Hongwen Yi,&nbsp;Jinfang Peng,&nbsp;Xue Mi,&nbsp;Minhao Zhu","doi":"10.1111/ffe.70422","DOIUrl":"https://doi.org/10.1111/ffe.70422","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, the dynamic response of titanium alloy (TC4)-carbon fiber–reinforced plastic (CFRP) double-riveted structures under various loads was investigated through experimental method. Complementary finite element analysis under different loading conditions is conducted to elucidate the evolution of stress distribution and elastic deformation within the joint. Specifically, fatigue tests were conducted at loading angles of 0°, 45°, and 90° to compare the dynamic response and evolution process of fretting damage at the contact interface, with simultaneous monitoring of temperature changes. The results demonstrate that fatigue testing process consists of two distinct stages. In the partial slip state under low loads, the temperature had slight fluctuations around 25°C, and the two plates did not fail. During the gross slip state under high loads, the temperature reached approximately 70°C, leading to fatigue failure of CFRP. Moreover, surface damage patterns were similar across angles, whereas 0° loading was subjected to greater excitation. At a load of 10 kN, the fatigue life under 0° loading exceeded 1 million cycles, and it was approximately 2000 times longer than that under 45° and 90° loadings. Hence, 0° loading was more favorable for double-riveted structures, even though a period of complete slip appeared in the early fatigue stage under the 0° loading mode.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 11","pages":"4863-4879"},"PeriodicalIF":3.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100072","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}

{"title":"Mixed-Mode Fracture of Inclined Straight-Fronted Edge Cracks in Round Bars: Stress Intensity Factors and Propagation Criteria for Suture Design","authors":"Weihai Xia,&nbsp;Guangjian Peng,&nbsp;Yuxuan Wang,&nbsp;Yong Huan,&nbsp;Peijian Chen,&nbsp;Taihua Zhang","doi":"10.1111/ffe.70419","DOIUrl":"https://doi.org/10.1111/ffe.70419","url":null,"abstract":"<div>\u0000 \u0000 <p>Barbed sutures revolutionize surgical wound closure by eliminating knots and ensuring uniform stress distribution, yet barb cutting introduces inclined straight-fronted edge cracks that compromise fracture resistance. This study addresses this critical limitation by developing an equivalent model of barbed sutures, incorporating key geometric features, and employing three-dimensional finite element analysis with the contour integral method to compute mixed-mode stress intensity factors (SIFs) along the crack front. We systematically investigate the interplay between cutting parameters—depth ratios and angles—and SIFs for Modes I, II, and III, revealing how deeper cuts and higher angles exacerbate crack propagation risks. Equivalent SIFs, derived from maximum tangential stress and maximum potential energy release rate criteria, pinpoint the crack front's midpoint as the most vulnerable site, with empirical equations enabling rapid predictions. These findings offer actionable insights for optimizing barb design to balance anchoring strength and fracture toughness, enhancing suture reliability in clinical settings and informing fracture mechanics in cylindrical structures. This work bridges biomedical engineering and fracture theory, providing theoretical support for the development of safer and more effective surgical tools.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 11","pages":"4907-4920"},"PeriodicalIF":3.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100653","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}

{"title":"Experimental Evidence and Constitutive Modeling on Mechanical Behavior of Marble Under Triaxial Loading-Unloading Cycles","authors":"Ke-Sheng Li,&nbsp;Xue-Feng Liu,&nbsp;Wen-Ling Tian,&nbsp;Min-Zhen Zhang","doi":"10.1111/ffe.70408","DOIUrl":"https://doi.org/10.1111/ffe.70408","url":null,"abstract":"<div>\u0000 \u0000 <p>This study aims to investigate the mechanical properties and damage constitutive model of marble under cyclic loading-unloading conditions. Triaxial cyclic loading-unloading tests were conducted to examine the effects of confining pressure on the strength, deformation, and damage evolution of marble. The experimental results demonstrate that confining pressure significantly influences the mechanical behavior of marble, particularly at high confining pressures, where marble exhibits enhanced plastic deformation capacity and higher strength. As the confining pressure increased from 5 to 40 MPa, the peak deviatoric stress and residual strength increased by 105.76% and 328%, respectively. To better predict the damage evolution of marble under cyclic loading, a new statistical damage constitutive model is proposed. The model incorporates Weibull distribution and the Drucker–Prager failure criterion, providing an accurate representation of the damage evolution process under varying confining pressures. Finally, the model is validated through comparison with experimental data, demonstrating its effectiveness.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 11","pages":"4628-4637"},"PeriodicalIF":3.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099484","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}

{"title":"Effects of Propylene Fiber and Nanosilica on Failure Mechanisms of Cement-Stabilized Clay Subjected to Freeze–Thaw Cycles","authors":"Ali Ghorbani,&nbsp;Alireza Fallah Sogheh","doi":"10.1111/ffe.70234","DOIUrl":"https://doi.org/10.1111/ffe.70234","url":null,"abstract":"<div>\u0000 \u0000 <p>Construction of civil engineering structures on clay soils in cold areas can cause structural fracture/damage due to settlements from freeze–thaw (F–T) cycles. This study investigates the effects of propylene fiber and nanosilica on the mechanical and microstructural properties of cement-stabilized clay in F–T conditions. Various tests measured unconfined compressive strength (UCS), stress–strain behavior, energy absorption capacity (<i>E</i>_<i>u</i>) representing the energy to fracture, secant modulus (<i>E</i>₅₀), and volume change (Δ<i>V</i>) of the samples. Ductility/toughness was assessed using <i>E</i>_<i>u</i>, whereas Δ<i>V</i> was used to evaluate cracking potential. The findings show that optimal amounts of fiber (0.2%) and nanosilica (2%) improve strength, but adding more reduces it. As evidenced by <i>E</i>_<i>u</i>, fiber addition boosts energy absorption due to increased strain. Physicochemical analysis indicates that fibers improve mechanical interlocking. Furthermore, nanoparticles enhance cement efficiency by boosting chemical reactions due to their large surface area and filling voids with cementitious gels.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 11","pages":"4796-4807"},"PeriodicalIF":3.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100051","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}

{"title":"Comparative Fatigue Crack Growth and Fractographic Investigation of Composite-Patch–Repaired Al 2024-T3 and Al 7075-T6 Aerospace Alloys","authors":"Rachid Bouregba,&nbsp;Belaid Mechab,&nbsp;Amine Yerou,&nbsp;Mohamed Mokhtar Bouziane,&nbsp;Ali Merdji,&nbsp;Omar Khatir,&nbsp;Bel Abbes Bachir Bouiadjra","doi":"10.1111/ffe.70411","DOIUrl":"https://doi.org/10.1111/ffe.70411","url":null,"abstract":"<div>\u0000 \u0000 <p>This study compares fatigue crack propagation and fracture mechanisms in Al 2024-T3 and Al 7075-T6 aerospace alloys repaired with bonded carbon/epoxy composite patches. Single-edge notched tension specimens were tested under identical constant-amplitude cyclic loading, and repair efficiency was assessed using fatigue life data, stress intensity factor analysis, and SEM fractography. Composite repair markedly extended fatigue life: Al 2024-T3 increased from about 1.35 × 10⁵ to 4.05 × 10⁵ cycles, whereas Al 7075-T6 increased from about 3.9 × 10⁴ to 1.6 × 10⁵ cycles. The patch reduced the crack-driving force by nearly 70% at large crack lengths. Fractography showed ductile crack growth in Al 2024-T3 and more localized, brittle-like damage in Al 7075-T6. Fatigue life improvement was governed by load transfer, crack shielding, and crack closure, confirming the effectiveness of bonded composite repair for aerospace aluminum structures.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"49 11","pages":"4765-4777"},"PeriodicalIF":3.2,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099984","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}