International Journal of Fatigue最新文献

{"title":"On the fatigue behavior of thin and thick adhesively bonded composite joints","authors":"Angelo Savio Calabrese ,&nbsp;Anastasios P. Vassilopoulos","doi":"10.1016/j.ijfatigue.2025.109065","DOIUrl":"10.1016/j.ijfatigue.2025.109065","url":null,"abstract":"<div><div>Investigations of the fatigue performance of adhesively bonded joints were initiated since the 1950 s. An abundance of publications has emerged dealing with the experimental investigation of the fatigue performance of adhesively bonded joints of various geometries and material combinations to serve the needs of various structures operating under various loading and environmental conditions. This work reviews the fatigue of composite adhesively bonded joints by analyzing relevant literature and reviewing current testing standards for primary applications. It classifies joints based on the materials used and the bondline thickness moving from thin film adhesive joints to thick paste adhesive joints to cover a wide range of contemporary engineering applications. The findings lead to a comprehensive discussion that lays the groundwork for further research in this field.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"199 ","pages":"Article 109065"},"PeriodicalIF":5.7,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117084","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":"Investigation of the pitting-to-crack transition in corrosion-fatigue of high-strength steel wires based on the phase-field method","authors":"Haonan Bing ,&nbsp;Shunlong Li ,&nbsp;Chengming Lan","doi":"10.1016/j.ijfatigue.2025.109040","DOIUrl":"10.1016/j.ijfatigue.2025.109040","url":null,"abstract":"<div><div>This study develops a coupled corrosion-fatigue phase-field model to investigate the pitting-to-crack transition in high-strength steel wires by integrating chemical–electrochemical processes and cyclic loading effects within a unified computational framework. The corrosion-fatigue life (CFL) of high-strength steel wires was determined through coupled corrosion-fatigue experiments, and the phase-field model replicated the observed CFL trends, demonstrating its accuracy and reliability in predicting material degradation. The model effectively captures the entire evolution from pit nucleation to crack propagation. Simulation results show that pit geometry plays a critical role in the transition from corrosion-driven degradation to mechanically dominated crack propagation, with narrower pits generating higher stress concentrations that accelerate crack initiation. Additionally, the interfacial kinetic coefficient significantly influences pit evolution and crack nucleation, underscoring its importance in the progression of corrosion-fatigue damage. The study also identifies the critical energy release rate (<span><math><msub><mrow><mi>G</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span>) as a key mechanical parameter that governs the transition from pitting to fatigue crack growth, providing a quantitative criterion for assessing damage evolution. The proposed phase-field model offers a comprehensive tool for predicting structural degradation in high-strength steel wires and provides fundamental insights into corrosion-fatigue mechanisms.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"199 ","pages":"Article 109040"},"PeriodicalIF":5.7,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083902","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":"Transient fatigue crack growth behaviour of additively manufactured AlSi10Mg aluminium alloy under various post-processing treatments","authors":"Rui F. Fernandes ,&nbsp;Joel S. Jesus ,&nbsp;Luis P. Borrego ,&nbsp;Mario Guagliano ,&nbsp;Ricardo Branco ,&nbsp;Ricardo Cláudio ,&nbsp;José A.M. Ferreira ,&nbsp;José D. Costa","doi":"10.1016/j.ijfatigue.2025.109064","DOIUrl":"10.1016/j.ijfatigue.2025.109064","url":null,"abstract":"<div><div>This study investigates the transient fatigue crack growth (FCG) behaviour of AlSi10Mg aluminium alloy specimens produced by laser powder bed fusion and subjected to different post-processing treatments, including as-built, as-built shot-peened, stress-relieved, and stress-relieved shot-peened conditions. FCG tests were performed under constant amplitude (R = 0.05) and single tensile overload conditions, with overload ratios of 1.5, 2.0, and 2.5 applied at stress intensity factor ranges of 4, 7, and 9 MPa√m.</div><div>Shot peening had minimal influence on near-threshold FCG rates in as-built specimens, though it slightly increased the threshold value. At higher ΔK values, as-built and as-built shot-peened specimens exhibited similar FCG behaviour, while shot peening provide no additional FCG resistance in stress-relieved specimens. Overload-induced crack closure was strongly influenced by the magnitude of the overload ratio, with as-built specimens showing FCG retardation even under lower overload ratios (OLR = 1.5). In contrast, stress-relieved specimens exhibited minimal sensitivity to such conditions.</div><div>Higher overload ratios (OLR = 2.0 and 2.5) induced greater crack wake plasticity, resulting in pronounced crack retardation in both as-built and stress-relieved conditions. However, as-built specimens fractured under higher overload magnitudes, highlighting the superior ductility and toughness of stress-relieved specimens. Fracture surface analysis revealed plastic deformation mechanisms induced by overloads, confirming an enhanced crack closure after overload application.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"199 ","pages":"Article 109064"},"PeriodicalIF":5.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947700","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":"Thermal fatigue failure mechanism of thin-walled Ni3Al-based single crystal alloy with film cooling hole","authors":"Haibo Wang ,&nbsp;Zhuofan Hu ,&nbsp;Haoyu Wang ,&nbsp;Chengwen Li ,&nbsp;Zhe Wang ,&nbsp;Fan Wang ,&nbsp;Junwu Wang ,&nbsp;Yong Shang ,&nbsp;Yanling Pei ,&nbsp;Shusuo Li ,&nbsp;Shengkai Gong","doi":"10.1016/j.ijfatigue.2025.109063","DOIUrl":"10.1016/j.ijfatigue.2025.109063","url":null,"abstract":"<div><div>The refined structure design of the single crystal (SX) turbine blades through the thin-walled coupled film cooling hole (FCH) improves the cooling efficiency. Frequent take-off and landing cycles of aircraft create a build-up of thermal stresses that can lead to thermal fatigue cracks around FCHs of thin-walled turbine blades. Due to the lack of systematic research on the thermal fatigue behavior around FCH of thin-walled SX turbine blades, a Ni₃Al-based SX with high temperature-bearing capacity was selected in this study, and the effects of peak temperature, wall thickness and hole diameter on the thermal fatigue behavior of SX were studied by designing L9(3³) orthogonal experiments and finite element method (FEM). The key findings reveal that wall thickness has the most significant impact on thermal crack growth, followed by peak temperature and hole diameter. Three types of thermal cracks were primarily identified: top/bottom thermal cracks caused by longitudinal temperature gradient during the quenching stage, oblique thermal cracks resulting from the activation of the octahedral slip system, and structural thermal cracks due to machining defects. This study provides a reference and data support for the structural design of single crystal turbine blades for a new generation of aero engines.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"199 ","pages":"Article 109063"},"PeriodicalIF":5.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083837","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 analysis of static and fatigue performance of hybrid double-lap joints in thin primary metallic aircraft structures","authors":"Amir Ekladious ,&nbsp;John Wang ,&nbsp;Nabil Chowdhury ,&nbsp;Paul Chang ,&nbsp;Wing Kong Chiu","doi":"10.1016/j.ijfatigue.2025.109033","DOIUrl":"10.1016/j.ijfatigue.2025.109033","url":null,"abstract":"<div><div>This study investigates and compares the static and fatigue performance of double-lap joint repairs applied to primary thin aircraft structures assembled using traditional fastening, pure bonding, and hybrid methods. Baseline configurations, representing optimally assembled joints with inherent designed strength, were compared to configurations with simulated defects, designed to replicate practical flaws in the bond region that may remain undetected by current non-destructive inspection techniques. Specimens were subjected to static and fatigue tests under controlled loading conditions, with strain gauges and optical camera recordings to provide real-time monitoring of strain distribution and crack growth. Hybrid joints, combining adhesive bonding and mechanical fastening, exhibited superior strength and stiffness compared to mechanically fastened joints, and comparable performance to purely bonded joints under optimal conditions. In the studied defective scenarios, hybrid joints restored up to four times the strength of their purely bonded counterparts. Fatigue tests demonstrated that hybrid joints outperformed mechanically fastened joints, achieving twelve times the fatigue resistance and, exhibited a 10% improvement over purely bonded configurations when normalised to a common strain level. This advantage was particularly evident in scenarios involving undetectable bondline defects that may arise in practice, where hybrid joints effectively safeguarded purely bonded configurations from abrupt failures and significantly improved their fatigue resistance. Visual inspections and strain measurements further confirmed that the inclusion of rivets played a crucial role in suppressing Mode I opening and peeling stresses, thereby arresting crack growth and enhancing joint durability. These findings highlight the potential of hybrid joints to improve the durability and safety of thin aircraft structures, offering significant cost savings and enhanced operational availability. This study presents part of an assessment programme to certify bonded repairs on thin primary metallic aircraft structures.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"199 ","pages":"Article 109033"},"PeriodicalIF":5.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099106","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 multiaxial fatigue life analysis method for automotive components based on LSTM-CNN","authors":"Chun Zhang,&nbsp;Ruoqing Wan,&nbsp;Junru He,&nbsp;Jian Yu","doi":"10.1016/j.ijfatigue.2025.109062","DOIUrl":"10.1016/j.ijfatigue.2025.109062","url":null,"abstract":"<div><div>The structural components of a moving vehicle are subjected to non-stationary multi-directional excitations from irregular road profiles. Multiaxial fatigue analysis under non-stationary dynamic excitations plays a crucial role in accurately predicting the fatigue life of automotive components. A time-domain method for multiaxial fatigue analysis of automotive components under non-stationary loads is proposed based on deep neural networks. Firstly, a time–frequency domain data augmentation technique is employed to construct long-term multiaxial loads from measured load histories for eight typical roads. Subsequently, a hybrid model integrating Long Short-Term Memory (LSTM) and Convolutional Neural Networks (CNN) is developed to represent the nonlinear mapping from excitation to response, serving as a high-dimensional time-series prediction surrogate model. Using the surrogate model trained only on short-term load and response data, the stress and strain components at multiple critical points of the automotive structural component can be predicted quickly and accurately. Furthermore, the influences of different fatigue criteria, various road types, and varying durations of dynamic response calculations on the fatigue life prediction results are thoroughly discussed. Numerical simulation analysis of an automotive control arm demonstrates that, compared to fatigue life analysis based on transient response calculations using the finite element method, the proposed method achieves a computational efficiency improvement of 2–3 orders of magnitude, and the discrepancy in multiaxial fatigue life calculations is less than 9%.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"199 ","pages":"Article 109062"},"PeriodicalIF":5.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947701","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":"The effect of corrosion on the fatigue crack-growth of 17-4 PH stainless steel specimens made by selective laser melting","authors":"America Califano ,&nbsp;Enrico Armentani ,&nbsp;Filippo Berto ,&nbsp;Raffaele Sepe","doi":"10.1016/j.ijfatigue.2025.109059","DOIUrl":"10.1016/j.ijfatigue.2025.109059","url":null,"abstract":"<div><div>The numerous advantages of the Selective Laser Melting (SLM) technology have made it a quite common Additive Manufacturing (AM) process for components made in metals and metallic alloys. Several factors, like building direction, defects, residual stresses and corrosion can substantially jeopardize the performance of the finished products obtained with such manufacturing process. In this regard, the present study investigates the impact of corrosion on the fatigue crack-growth behavior of 17-4 PH stainless steel specimens manufactured through SLM. This type of stainless steel, known for its high strength and corrosion resistance, is widely used in applications requiring durability under cyclic loading. For this reason, this work explores how the experimental crack initiation and propagation rates are affected by two cross different orientations of the initial notch (horizontal and vertical), different testing environments (air and seawater) and different load frequencies. Findings also highlight how corrosion accelerates fatigue crack growth in SLM-fabricated specimens, indicating a need for tailored post-processing treatments to enhance their performance in corrosive environments.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"199 ","pages":"Article 109059"},"PeriodicalIF":5.7,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947693","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":"Enhanced local fatigue approach for welded tubular joints using 3D digital scans and implicit gradient model","authors":"Tim Brömer ,&nbsp;Viktor Widerspan ,&nbsp;Sulaiman Shojai ,&nbsp;Elyas Ghafoori","doi":"10.1016/j.ijfatigue.2025.109060","DOIUrl":"10.1016/j.ijfatigue.2025.109060","url":null,"abstract":"<div><div>The design of jacket structures in offshore wind turbines (OWTs) is driven by fatigue, crucial due to dynamic loads from operational movements, waves, and wind. This study aims to develop a digital framework for fatigue analysis of tubular welded joints in jacket OWT, incorporating real 3D scanned geometries and imperfections through their digital images. Numerical analysis has been conducted using finite element method to predict the experimental results, in which the effect of micro-support has been taken into account using an implicit gradient model (IGM). Furthermore, 4R method has been used to account for mean stress corrections due to residual stresses and imperfections. Digital Image Correlation (DIC) was employed during the high-cycle fatigue experiments to detect the initiation and progression of a technical crack, providing precise measurements of strain distribution and crack size development. The results have shown that the proposed numerical framework based on the IGM can successfully determine the lifetime and location of crack initiation in the 3D scanned welded details. The proposed framework significantly improves the accuracy of high-cycle fatigue life predictions and offers a scalable solution for structural health monitoring, facilitating lifetime extension across a wide range of industries, including construction, automotive, aerospace, and renewable energy.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"199 ","pages":"Article 109060"},"PeriodicalIF":5.7,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123767","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":"Interpretable prediction of sample size–dependent fatigue crack formation lifetime using deep symbolic regression and polycrystalline plasticity models","authors":"Bo Dong ,&nbsp;Tang Gu ,&nbsp;Yong Zhang ,&nbsp;Henry Proudhon ,&nbsp;Yun–Fei Jia ,&nbsp;Xian–Jun Pei ,&nbsp;Xu Long ,&nbsp;Fu–Zhen Xuan","doi":"10.1016/j.ijfatigue.2025.109057","DOIUrl":"10.1016/j.ijfatigue.2025.109057","url":null,"abstract":"<div><div>Fatigue Indicator Parameters (FIPs), derived from cyclic intragranular and intergranular mechanical variables using the Crystal Plasticity Finite Element Method (CPFEM), can serve as surrogate measures of the driving force for fatigue crack formation within the first grain or nucleant phase. Simulating larger sample (i.e., increasing the number of grains) using CPFEM generally result in higher maximum FIP values, indicating a greater likelihood of fatigue crack initiation. However, the substantial computational demands of CPFEM limit its practical application in investigating the sample size effect on maximum FIPs. This study employs the recently developed Deep Symbolic Regression (DSR) algorithm to generate interpretable expressions linking sample size with the statistical characteristics of maximum FIPs in duplex Ti–6Al–4 V with random texture. These data–driven expressions obtained through DSR are systematically compared with predictions derived from the statistically grounded Extreme Value Theory (EVT), which suggests that the entire FIP dataset exceeding a threshold <em>x</em>₀​ converges to Gumbel distribution. The strong agreements found between DSR and EVT expressions not only validates the mathematical underpinnings of EVT but also demonstrates how EVT can elucidate the physical insights revealed by DSR. Building on this, we introduce a novel method, i.e., Regrouping of Maximum FIPs (RMF), to improve prediction reliability by mitigating the influence of the threshold <em>x</em>₀ in EVT. Finally, by leveraging the statistical distribution of maximum FIPs derived from DSR, we forecast the sample size–dependent Fatigue Crack Formation Lifetime (FCFL), providing a robust tool for engineering applications.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"199 ","pages":"Article 109057"},"PeriodicalIF":5.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068577","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":"The effect of interfacial contact and damage gradient on fretting fatigue of Ti-6Al-4 V dovetail assembly using a multiaxial fatigue framework","authors":"Xiyuan Zhang ,&nbsp;Dasheng Wei ,&nbsp;Mengdi Ma ,&nbsp;Shun Yang","doi":"10.1016/j.ijfatigue.2025.109058","DOIUrl":"10.1016/j.ijfatigue.2025.109058","url":null,"abstract":"<div><div>In this study, fretting fatigue tests were performed on dovetail assemblies. The displacement and strain of the components during testing were recorded using Digital Image Correlation (DIC) equipment. The results revealed that the dovetail assembly gradually exhibited a sticking phenomenon, stabilizing after approximately 10,000 cycles, with relative slip significantly reduced compared to the initial cycles. Surface wear and temperature were also monitored. The findings showed that during the fretting tests, a considerable amount of wear debris accumulated in the contact zone, increasing the coefficient of friction (COF) and intensifying the sticking phenomenon. This led to reduced frictional energy, causing minimal changes in surface temperature. Consequently, for fretting fatigue in dovetail assemblies, localized stress concentration emerged as the primary factor affecting fatigue life, surpassing influences from relative slip, surface wear, and frictional heat generation. Additionally, a finite element model of the dovetail assembly was developed, incorporating the Chaboche material constitutive model to calculate the stable stress–strain distribution under cyclic loading. The model’s predictions were validated against the DIC test results. Based on an established multiaxial fatigue framework, a program was developed to post-process the simulation results, producing diagrams for critical angles and damage distribution. To address the characteristics of local damage gradients, a method for selecting the critical distance and applying damage gradient correction was proposed. This approach was successfully applied to the SWT and FS models, demonstrating excellent validation.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"199 ","pages":"Article 109058"},"PeriodicalIF":5.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935591","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}