International Journal of Fatigue最新文献

{"title":"Multiaxial fatigue life prediction using the Tanaka-Mura-Wu model","authors":"Xijia Wu","doi":"10.1016/j.ijfatigue.2025.108962","DOIUrl":"10.1016/j.ijfatigue.2025.108962","url":null,"abstract":"<div><div>Based on the accumulative nature of fatigue energy, the Tanaka-Mura-Wu (TMW) model is extended for multiaxial fatigue life prediction under uniaxial, torsion, and proportional/non-proportional combined loadings. It is proven that when the strain energies of all loadings are added up on the octahedral plane, the result is equivalent to the von Mises criterion, irrespective of the phase angle between the multiaxial alternations within one cycle. In this study, the extended TMW model is applied to Ti-6Al-4 V, 17-4PH steel and hot-rolled 45 steel as demonstration examples. It is shown that the TMW model predicts multiaxial fatigue life, based on the basic material property parameters such as the shear modulus, Poisson’s ratio, surface energy and Burgers vector of the material, without data regression as Coffin-Manson equation would need to. The results are in very good agreement with the experimental data.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"197 ","pages":"Article 108962"},"PeriodicalIF":5.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760274","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":"Evolution of cable corrosion characteristics and life reliability analysis for cable stayed bridges","authors":"Qianling Wang ,&nbsp;Guowen Yao ,&nbsp;Xuanrui Yu ,&nbsp;Xuanbo He ,&nbsp;Yuan Qu ,&nbsp;Shicong Yang ,&nbsp;Mingxun Hou ,&nbsp;Tao Zhang ,&nbsp;Guangxian Yan","doi":"10.1016/j.ijfatigue.2025.108960","DOIUrl":"10.1016/j.ijfatigue.2025.108960","url":null,"abstract":"<div><div>Corrosion fatigue of high-strength steel wires is a critical factor influencing the durability and reliability of cable-stayed bridges. In this study, high-strength steel wires were subjected to natural corrosion, stress-free accelerated corrosion, and stress-accelerated corrosion tests. The corrosion pit characteristics of the steel wires were analyzed using a three-dimensional scanner, and their fatigue life was determined through fatigue testing. Based on these data, a time-varying distribution model of the corrosion characteristics was established using the Weibull distribution function, and the effects of different corrosive environments on the corrosion pits were systematically analyzed. Building on this foundation, a time-varying fatigue life survival probability model for high-strength steel wires, based on corrosion pit characteristics, was further developed. The results demonstrate that the Weibull function more accurately describes the distribution patterns of corrosion pit characteristics compared to other functions, and different corrosive environments significantly influence the distribution forms of corrosion pits. The established time-varying Weibull model for corrosion characteristics and the time-varying fatigue life survival probability model effectively predict the corrosion characteristics and fatigue life survival probability of high-strength steel wires. Additionally, it was found that defect parameters provide a more accurate measure of corrosion severity than the weight loss rate and depth-to-diameter ratio. These findings offer valuable insights for assessing and predicting the long-term performance of high-strength steel wires in corrosive environments.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"197 ","pages":"Article 108960"},"PeriodicalIF":5.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738751","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":"Damage mechanism analysis and fatigue impact factor calculation method for ZL114A aluminum alloy under the alternating effects of corrosion and fatigue","authors":"Changkai Wang,&nbsp;Tianyu Zhang,&nbsp;Teng Zhang,&nbsp;Yuting He,&nbsp;Jinhui Fu","doi":"10.1016/j.ijfatigue.2025.108951","DOIUrl":"10.1016/j.ijfatigue.2025.108951","url":null,"abstract":"<div><div>A laboratory alternating corrosion/fatigue test conducted under a simulated tropical marine atmospheric environment has been carried out for ZL114A cast aluminum alloy, which is commonly used in the aviation industry. The life degradation law of these materials under different test parameters was studied. In addition, transmission electron microscopy (TEM) was utilized to observe and analyze the intergranular corrosion and fatigue crack tip morphologies, and then used to propose a damage mechanism model for aluminum alloy under the alternating action of a corrosive environment and fatigue loads. Our results showed that the predominant corrosion damage mode for ZL114A aluminum alloy in the alternating corrosion/fatigue test was intergranular corrosion. The eutectic Si phase at the grain boundaries served as the cathode, while α-Al underwent dissolution as the anode. The fatigue load induced dislocation accumulation at the tip of the intergranular corrosion, causing separation of the interface formed between the matrix and secondary phase. On the other hand, the fatigue load promoted cracking of the grain boundaries after corrosion, which ultimately resulted in the initiation of fatigue cracks. The initiation time for the fatigue cracks during the alternating test had a considerable effect on the fatigue life of the samples. When durations of the corrosion stage (<em>ΔT</em>) and numbers of load cycles during the fatigue testing stage (<em>ΔN</em>) were relatively small (Δ<em>T</em> &lt; 72 h, Δ<em>N</em> &lt; 30,000 cycles), no fatigue cracks were initiated during the alternating process and the final stage fatigue life of the material was comparable to the fatigue life after pre-corrosion for the same corrosion time. When <em>ΔN</em> was large, fatigue cracks were initiated during the alternating test and a sharp drop occurred in the final stage fatigue life. The calculation formula for the fatigue impact factor of ZL114A aluminum alloy during the corrosion/fatigue alternating test under any <em>ΔT</em> and <em>ΔN</em> conditions was deduced.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"197 ","pages":"Article 108951"},"PeriodicalIF":5.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747660","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 conditional probability density function model for fatigue damage estimation in broadband non-Gaussian stochastic processes","authors":"Yuhao Zhu,&nbsp;Weixing Yao","doi":"10.1016/j.ijfatigue.2025.108958","DOIUrl":"10.1016/j.ijfatigue.2025.108958","url":null,"abstract":"<div><div>To address the issue of the inability of the probability density function of stress amplitude under Gaussian processes to be applied to fatigue damage estimation in non-Gaussian processes, a conditional probability density function model of the mean given amplitude is developed in this paper. The relation between the unknown parameter of the conditional probability density function and the bandwidth parameters of stochastic processes is established utilizing a four-parameter nonlinear regression model. The conditional probability density function can be multiplied with an approximate probability density function model of rainflow amplitude under broadband Gaussian stochastic processes to form a joint probability density function of amplitude and mean. By introducing the Hermite transformation function, the joint probability density function can be extended to fatigue damage estimation in broadband non-Gaussian stochastic processes. Through case studies of constructed standard spectra and the vibration response of 2A12 aluminum alloy edge-notch specimens, the accuracy of the proposed method is verified by comparisons with the non-Gaussian Tovo-Benasciutti method and the time-domain method.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"197 ","pages":"Article 108958"},"PeriodicalIF":5.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738749","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 crack initiation in additively manufactured maraging steel: A statistical insight","authors":"Chitresh Chandra,&nbsp;Vidit Gaur","doi":"10.1016/j.ijfatigue.2025.108957","DOIUrl":"10.1016/j.ijfatigue.2025.108957","url":null,"abstract":"<div><div>High cycle fatigue tests were performed on three different-sized, laser powder bed fusion (L-PBF) fabricated MS1 maraging steel specimens at room temperature and at a stress ratio of −1, with qualitative and statistical investigation of the defect size and shape on the fatigue lives. The mechanical and fatigue properties were not much affected by the change in gauge volumes (128, 250, 432 mm³) investigated in this study owing to the similar distribution of the internal porosities. Interestingly, the manufacturing defects were mostly present near the free surface of the L-PBF fabricated parts instead of being uniformly distributed within the control volume. A significant scatter in the fatigue life data was attributed to the geometric parameters: shape, size, and location of the crack-initiating defects within the fractured specimens. The ratio of the defects’ size to their location with respect to the free surface was found to dictate the total fatigue life. The probabilistic S-N curves based on two popular models: the Weibull model and the Stüssi model, were plotted in addition to the conventional Murakami’s model to predict the fatigue life and strength. Conclusively, the Stüssi Model appeared to generate a safer fatigue design curve with the broadest bandwidth covering the experimentally observed uncertainties. The obtained results showed a good correlation with the experimental results and established the reliability of the research.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"197 ","pages":"Article 108957"},"PeriodicalIF":5.7,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738694","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 failure of rivets and bolts in shear","authors":"Johan Maljaars ,&nbsp;Sjoerd Hengeveld ,&nbsp;Jorrit Rodenburg","doi":"10.1016/j.ijfatigue.2025.108929","DOIUrl":"10.1016/j.ijfatigue.2025.108929","url":null,"abstract":"<div><div>Double-covered shear joints with hot rivets or with snug tight bolts subjected to cyclic load may fail in the ply or in the fastener. Tests with the latter failure mode are sparse and scattered. This paper combines these data and attempts to provide a unified theory on the fatigue driving force for this failure mode. Using the finite element method, we demonstrate that the nominal shear stress in the fastener is not a good indicator of its fatigue performance, because it ignores frictional force transfer and assumes an equal load share between fasteners. We provide an analytical model for the actual shear stress range. We derive S–N curves for this shear stress range, either using straightforward regression of test data or using Bayesian inference of the decisive failure type (ply or fastener). Finally, we derive the geometries and loads for which fastener failure is decisive over ply failure.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"197 ","pages":"Article 108929"},"PeriodicalIF":5.7,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738750","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":"Very high cycle fatigue crack initiation mechanisms in nickel-based superalloy at elevated temperatures: Competitive and transition roles of twins vs. Inclusions","authors":"Junhuan Wang,&nbsp;Hongchang Ma,&nbsp;Wei Hua,&nbsp;Qi Hu,&nbsp;Rui Chen,&nbsp;Hongqian Xue","doi":"10.1016/j.ijfatigue.2025.108959","DOIUrl":"10.1016/j.ijfatigue.2025.108959","url":null,"abstract":"<div><div>Through high-temperature ultrasonic fatigue testing and microstructural characterization techniques, the high cycle fatigue (HCF) and very high cycle fatigue (VHCF) behaviors of GH4169 superalloy under high-temperature conditions were investigated, along with the microstructural configurations related to fatigue crack initiation. The results were compared with the previous VHCF test data conducted at room temperature. It was found that the HCF and VHCF lives of GH4169 superalloy decrease significantly with increasing temperature, which is related to a transition in the crack initiation sites at high temperatures. Additionally, a competitive failure mode between internal and external crack initiation sites appears within the HCF range. Detailed investigation of the characteristics of preferred strain localization and microcrack initiation regions revealed that the crack initiation life fraction at high temperatures is shortened. Furthermore, at high temperatures, the activation of a new cubic slip system, along with thermal activation effects and the thermal expansion mismatch between non-metallic inclusions (NMIs) and the matrix, leads to a transition of VHCF crack initiation sites from twin boundaries (TBs) at room temperature to NMIs at high temperatures.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"197 ","pages":"Article 108959"},"PeriodicalIF":5.7,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724881","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":"Determining critical surface features affecting fatigue behavior of additively manufactured Ti-6Al-4V","authors":"Nabeel Ahmad ,&nbsp;Shehzaib Irfan ,&nbsp;Erfan Maleki ,&nbsp;Seungjong Lee ,&nbsp;Jia Peter Liu ,&nbsp;Shuai Shao ,&nbsp;Nima Shamsaei","doi":"10.1016/j.ijfatigue.2025.108956","DOIUrl":"10.1016/j.ijfatigue.2025.108956","url":null,"abstract":"<div><div>The fatigue life of additively manufactured metallic parts in the unmachined surface condition is typically shorter than those in machined surfaces, primarily due to the presence of surface micro-notches. Methods relying on conventional surface roughness parameters to account for the severity of the unmachined surfaces tend to give a rather “averaged” description, overlooking the localized nature of fatigue damage, thus they do not adequately capture the criticality of individual, fatigue critical surface valleys and their morphology. This study utilized a fracture mechanics based approach to identify the key surface features influencing the fatigue performance of laser powder bed fused (L-PBF) Ti-6Al-4V. X-ray computed tomography was employed to detect surface and sub-surface flaws, and a new method to capture and quantify the geometry of surface micro-notches—such as width, depth, opening angle, and radius of curvature—was proposed. These geometrical features, when integrated with classical stress concentration formulae, were shown to adequately represent the fatigue criticality of each notch. The calculated stress concentration was used with a fatigue notch factor model to predict the fatigue life of unmachined L-PBF specimens with a reasonable accuracy.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"197 ","pages":"Article 108956"},"PeriodicalIF":5.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724880","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 severity of local undercut on fatigue life of welded joints","authors":"Abinab Niraula ,&nbsp;Heikki Remes","doi":"10.1016/j.ijfatigue.2025.108949","DOIUrl":"10.1016/j.ijfatigue.2025.108949","url":null,"abstract":"<div><div>Fatigue cracks most commonly initiate from local weld imperfections, such as undercuts, that have a significant impact on the fatigue life of the structure. The influence of local undercut on fatigue has been traditionally classified on the level of workmanship for quality control purposes, and a systematic quantified approach to determine the influence of local undercut on fatigue strength is needed. In this paper, the influence of the 3D undercut geometry on the fatigue strength of welded joints is investigated to quantify the severity of different undercut sizes and shapes in butt welded joints. Systematic elastic and elasto-plastic analyses are performed on butt-welded joints with different steel grades and local undercut geometries under multiple stress ranges. As a result, a semi-analytical formulation is proposed to estimate the elastic stress concentration factor for butt welds with an undercut, considering the 3D undercut geometry as well as the global weld geometry. Furthermore, a novel undercut severity index for fatigue analysis is introduced and validated, considering the variation of the local undercut 3D shape, weld bead geometry, stress ranges, and materials.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"197 ","pages":"Article 108949"},"PeriodicalIF":5.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716240","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":"Fatigue strength prediction of 410NiMo stainless steel with surrogate weld discontinuities","authors":"C. Constantineau ,&nbsp;P.A. Deschênes ,&nbsp;R. Dubois ,&nbsp;M. Brochu","doi":"10.1016/j.ijfatigue.2025.108955","DOIUrl":"10.1016/j.ijfatigue.2025.108955","url":null,"abstract":"<div><div>The fatigue strength of martensitic stainless steel 410NiMo, featuring slag-type discontinuities, was investigated to evaluate the accuracy of fatigue strength prediction models. This study examines the influence of volumetric discontinuities introduced through robotic FCAW on fatigue strength, characterized using advanced techniques. High-resolution CT scanning (20 µm/voxel) enabled precise 3D modelling of the welded zones, supporting finite element simulations of the stress field. These simulations revealed complex distributions, with singularity exponents ranging from 0.27 to 0.45, lower than the typical 0.50 exponent associated with cracks. Fatigue experiments demonstrated that Linear Elastic Notch Mechanics (LENM), applied for the first time in this context, overestimated fatigue resistance by 34 %, whereas Linear Elastic Fracture Mechanics (LEFM), based on maximum discontinuity width, provided more accurate and conservative predictions, with an average deviation of 16 %. Fractographic analyses identified crack initiation sites at flux-filled micro-notches undetectable by CT resolution, while foreign elements from flux residues were observed, suggesting a potential embrittlement effect. These findings indicate that large, rounded discontinuities in welds can behave like cracks due to embedded microscopic cracks or notches. The study highlights the limitations of LENM for volumetric discontinuities in FCAW welds and establishes a framework for improving fatigue strength prediction.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"197 ","pages":"Article 108955"},"PeriodicalIF":5.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760275","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}