International Journal of Fatigue最新文献

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Structural reliability assessment under creep-fatigue considering multiple uncertainty sources based on surrogate modeling approach 基于代用建模方法的蠕变疲劳条件下结构可靠性评估(考虑多种不确定性源
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-11-24 DOI: 10.1016/j.ijfatigue.2024.108728
Yuan-Ze Tang , Xian-Cheng Zhang , Hang-Hang Gu , Kai-Shang Li , Chang-Qi Hong , Shan-Tung Tu , Yutaka S. Sato , Run-Zi Wang
{"title":"Structural reliability assessment under creep-fatigue considering multiple uncertainty sources based on surrogate modeling approach","authors":"Yuan-Ze Tang ,&nbsp;Xian-Cheng Zhang ,&nbsp;Hang-Hang Gu ,&nbsp;Kai-Shang Li ,&nbsp;Chang-Qi Hong ,&nbsp;Shan-Tung Tu ,&nbsp;Yutaka S. Sato ,&nbsp;Run-Zi Wang","doi":"10.1016/j.ijfatigue.2024.108728","DOIUrl":"10.1016/j.ijfatigue.2024.108728","url":null,"abstract":"<div><div>Creep-fatigue reliability assessment for high-temperature equipment is crucial but challenging due to the extensive data requirements and cumbersome methods. To enhance the implementation of creep-fatigue reliability assessment within engineering practice, this study employs multidimensional computational techniques grounded in the hybrid-driven paradigm. In detail, it presents a hybrid-driven creep-fatigue reliability assessment method integrating principles from mechanics, physics, and informatics and develops an integrated plug-in embedded in Abaqus software. The plug-in automates the implementation of parametric finite element analysis rooted in engineering damage mechanics, accommodating multiple uncertainty sources such as material properties, model parameters, geometry features, and applied loads. In particular, creep-fatigue reliability assessment utilizes a time-efficient alternative, facilitated by the adoption of surrogate modeling and Monte Carlo simulation. Furthermore, two typical examples from specimen-level (hole structure simulation specimen) to component-level (low-pressure turbine disk) are employed to demonstrate the availability and efficiency of the method and the plug-in. The plug-in with a hybrid-driven paradigm is poised to emerge as a powerful simulation-based engineering tool, facilitating the process of reliability assessment with enhanced convenience.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"192 ","pages":"Article 108728"},"PeriodicalIF":5.7,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702187","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
A slope-based J-integral approach and advanced image processing for assessment of the cyclic fatigue delamination behavior of adhesive joints 基于斜率的 J 积分法和先进的图像处理技术用于评估粘合剂接头的循环疲劳分层行为
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-11-23 DOI: 10.1016/j.ijfatigue.2024.108730
Gabriel Riedl , Francesco Baldi , Gernot M. Wallner
{"title":"A slope-based J-integral approach and advanced image processing for assessment of the cyclic fatigue delamination behavior of adhesive joints","authors":"Gabriel Riedl ,&nbsp;Francesco Baldi ,&nbsp;Gernot M. Wallner","doi":"10.1016/j.ijfatigue.2024.108730","DOIUrl":"10.1016/j.ijfatigue.2024.108730","url":null,"abstract":"<div><div>A fatigue fracture mechanics methodology was developed and established, employing a slope-based J-integral approach combined with advanced image processing techniques. Adhesively bonded double cantilever beam (DCB) specimens were tested under constant displacement amplitude loading. The beam rotation was tracked by affixing a repetitive pattern on the DCB specimens and capturing images at the maximum displacement amplitude. Using a custom-developed image processing procedure, the beam rotation was deduced. To validate the methodology, DCB fatigue experiments were conducted at 23, 60 and 75 °C on aluminum adherends bonded with a structural 2-K epoxy adhesive. The J-based approach was compared with a conventional, compliance-based linear elastic fracture mechanics (LEFM) method. The epoxy was a rather brittle, high-modulus adhesive with a bond line thickness of 0.25 mm, resulting in predominantly linear elastic material behavior. By analyzing the images taken during fatigue testing, a stiffening effect of the steel load blocks was observed. Excluding pattern elements directly below the load block yielded the best agreement between J-integral and LEFM data. Both approaches were in excellent agreement within the investigated temperature range. The investigated adhesive exhibited a highly temperature-dependent behavior, which was associated with higher crack propagation rates and a lower fatigue threshold at 60 and 75 °C.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"192 ","pages":"Article 108730"},"PeriodicalIF":5.7,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719973","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
Application of the Effective critical plane approach for the fatigue assessment of ductile cast iron under multiaxial and non-proportional loading conditions 在多轴和非比例加载条件下,应用有效临界面方法对球墨铸铁进行疲劳评估
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-11-22 DOI: 10.1016/j.ijfatigue.2024.108716
A. Chiocca , M. Pedranz , F. Zanini , S. Carmignato , V. Fontanari , M. Benedetti , F. Frendo
{"title":"Application of the Effective critical plane approach for the fatigue assessment of ductile cast iron under multiaxial and non-proportional loading conditions","authors":"A. Chiocca ,&nbsp;M. Pedranz ,&nbsp;F. Zanini ,&nbsp;S. Carmignato ,&nbsp;V. Fontanari ,&nbsp;M. Benedetti ,&nbsp;F. Frendo","doi":"10.1016/j.ijfatigue.2024.108716","DOIUrl":"10.1016/j.ijfatigue.2024.108716","url":null,"abstract":"<div><div>The fatigue assessment of structural components, especially made of ductile cast iron subjected to complex loading conditions, heavily relies on analyzing fatigue damage resulting from stress concentrations induced by geometric irregularities like notches and shrinkage pores. Standard methodologies, encompassing the Theory of Critical Distances (TCD), Strain Energy Density (SED), and Critical Plane (CP), have played pivotal roles in predicting fatigue strength for components featuring such irregularities. In this work, the authors explore the applicability of the Effective Critical Plane (ECP) approach on ductile cast iron notched specimens subjected to multiaxial and non-proportional loading conditions. The method focuses on evaluating the critical plane factor, after averaging the stress and strain field within a given control volume or area (i.e. defined by a control radius), centered on the critical node. The study aims to enhance the accuracy of fatigue life prediction for structural components made of ductile cast iron, thereby contributing to the improvement and practical applicability of fatigue assessment under complex loading conditions. The methodology, integrating the <em>Smith-Watson-Topper</em> and <em>Fatemi-Socie</em> CP factor, was applied to several experimental fatigue data obtained from ductile cast iron notched specimens, tested under multiaxial non-proportional loading conditions. After establishing the control radius associated with the investigated material, the method was utilized to perform a fatigue life forecast analysis on a specimen with porous defects.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"192 ","pages":"Article 108716"},"PeriodicalIF":5.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702188","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
Prediction of fatigue crack propagation behavior in elastic plastic region under block loading for type 316 steel via artificial neural network approach 通过人工神经网络方法预测 316 型钢在块状加载下弹性塑性区的疲劳裂纹扩展行为
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-11-22 DOI: 10.1016/j.ijfatigue.2024.108725
Lei He , Yang Tian , Hiroyuki Akebono , Atsushi Sugeta
{"title":"Prediction of fatigue crack propagation behavior in elastic plastic region under block loading for type 316 steel via artificial neural network approach","authors":"Lei He ,&nbsp;Yang Tian ,&nbsp;Hiroyuki Akebono ,&nbsp;Atsushi Sugeta","doi":"10.1016/j.ijfatigue.2024.108725","DOIUrl":"10.1016/j.ijfatigue.2024.108725","url":null,"abstract":"<div><div>This study investigated the fatigue crack propagation behavior from small defect in the elastic–plastic region under block loading conditions and clarified the influence of cycle ratio on the crack growth rate. Fatigue tests were conducted under constant and repeated two-step strain amplitude loading conditions using various cycle ratios. The results of the constant amplitude loading test indicated that the <em>J</em> integral can be employed to predict fatigue crack propagation rate in one master curve by considering the material constant, <em>l<sub>0</sub></em>. The results of the repeated two-step test showed that the fatigue life evaluated via the <em>J</em> integral had a larger scatter for test conditions at strain amplitudes of 1.0%/0.2% and 0.8%/0.2% with various cycle ratios. A highly accurate model was established to predict fatigue crack propagation behavior and investigate the effect of algorithms on the precision of models. To achieve this, three deep learning algorithms feed forward neural network (FFNN), cascade-forward neural network (CFNN) and function fitting neural network (FNN), were employed. It was observed that the precision of the constructed models was dependent on the algorithms and dataset split. The model constructed using the CFNN exhibited the highest prediction accuracy.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"192 ","pages":"Article 108725"},"PeriodicalIF":5.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719970","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
A fatigue life prediction approach to surface and interior inclusion induced high cycle and very-high cycle fatigue for bainite/martensite multiphase steel 贝氏体/马氏体多相钢表面和内部夹杂物诱发的高循环和超高循环疲劳寿命预测方法
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-11-22 DOI: 10.1016/j.ijfatigue.2024.108723
Yusong Fan , Guhui Gao , Xiang Xu , Rong Liu , Fengming Zhang , Xiaolu Gui
{"title":"A fatigue life prediction approach to surface and interior inclusion induced high cycle and very-high cycle fatigue for bainite/martensite multiphase steel","authors":"Yusong Fan ,&nbsp;Guhui Gao ,&nbsp;Xiang Xu ,&nbsp;Rong Liu ,&nbsp;Fengming Zhang ,&nbsp;Xiaolu Gui","doi":"10.1016/j.ijfatigue.2024.108723","DOIUrl":"10.1016/j.ijfatigue.2024.108723","url":null,"abstract":"<div><div>In this study, the relationship between fatigue life and the feature parameters of fatigue fracture surfaces was statistically analyzed to successfully develop a new fatigue life prediction approach. Results showed that the inclusion location was an important parameter affecting fatigue life besides stress amplitude, inclusion size and material hardness. A new stress concentration influence factor associated with the effective depth of inclusions was defined to make fatigue strength and fatigue life prediction models more reliable. The newly proposed fatigue life prediction model could uniformly predict inclusion-induced high cycle and very-high cycle fatigue life, needless to classify surface or interior inclusion. Furthermore, this approach also demonstrated strong capability in predicting fatigue strength.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"192 ","pages":"Article 108723"},"PeriodicalIF":5.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142696599","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
Ratcheting behaviour of Stellite 21 as laser cladding material for flange tip lift crossings repair 作为激光熔覆材料的 Stellite 21 的棘轮特性,用于法兰顶端提升交叉点修复
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-11-20 DOI: 10.1016/j.ijfatigue.2024.108726
Alvin Hiew , Phyo Thu Maung , B.Gangadhara Prusty , Quan Lai , Chung Lun Pun , Ralph Abrahams , Wenyi Yan
{"title":"Ratcheting behaviour of Stellite 21 as laser cladding material for flange tip lift crossings repair","authors":"Alvin Hiew ,&nbsp;Phyo Thu Maung ,&nbsp;B.Gangadhara Prusty ,&nbsp;Quan Lai ,&nbsp;Chung Lun Pun ,&nbsp;Ralph Abrahams ,&nbsp;Wenyi Yan","doi":"10.1016/j.ijfatigue.2024.108726","DOIUrl":"10.1016/j.ijfatigue.2024.108726","url":null,"abstract":"<div><div>Laser cladding holds the promise to repair damaged rails, including flange tip lift crossings (FTLC) in tram rails. In order to further understand the effectiveness of laser cladding against rail damage, this study investigated the ratcheting behaviour of the laser cladding alloy Stellite 21, used in FTLC repairs, in comparison to the currently used rail steel grade R260. Experimental studies were conducted under uniaxial and biaxial stress-controlled cyclic loads. The study found that under identical uniaxial stress conditions, Stellite 21 exhibits superior ratcheting behaviour compared to R260 steel. Various mean stresses and stress amplitudes were also studied, revealing that increases in mean stresses or stress amplitudes resulted in higher ratcheting strains and ratcheting strain rates. Additionally, biaxial compression-torsion cyclic loading tests were performed on the R260 to replicate real-life stress conditions. The results indicated that the direction of plastic strain accumulation depended on the direction of the applied non-zero mean stress. The findings from this study are essential for calibration of parameters of cyclic plasticity models, which can be used to simulate ratcheting performance of laser-cladded FTLCs under in-service conditions for the prediction of fatigue crack initiation life and maintenance requirements of flange tip lift crossings.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"192 ","pages":"Article 108726"},"PeriodicalIF":5.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702109","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
Temperature effects on low cycle fatigue deformation of powder metallurgy superalloy FGH95 温度对粉末冶金超合金 FGH95 低循环疲劳变形的影响
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-11-20 DOI: 10.1016/j.ijfatigue.2024.108727
Yanjie Li , Yibin Liu , Kesi Wu , Jie Sun , Dahai Zhang , Qingguo Fei
{"title":"Temperature effects on low cycle fatigue deformation of powder metallurgy superalloy FGH95","authors":"Yanjie Li ,&nbsp;Yibin Liu ,&nbsp;Kesi Wu ,&nbsp;Jie Sun ,&nbsp;Dahai Zhang ,&nbsp;Qingguo Fei","doi":"10.1016/j.ijfatigue.2024.108727","DOIUrl":"10.1016/j.ijfatigue.2024.108727","url":null,"abstract":"<div><div>The macroscopic morphology and microstructure evolution mechanism of the FGH95 alloy were investigated with regard to fracture under low-cycle fatigue at different temperatures. The fracture modes of the FGH95 alloy at 420 °C, 510 °C, and 600 °C were found to fall into two main categories: shear fracture at low temperatures (420 °C, 510 °C) and I type fracture at high temperatures (600 °C). The change in fracture mode can be attributed to the increase in strength of the precipitated phase with temperature. At low temperatures, the dislocation structure moves mainly by cutting, bypassing the precipitated phase by climbing at high temperatures. The different movement of the dislocations leads to the different fracture types of FGH95 alloy at different temperatures.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"192 ","pages":"Article 108727"},"PeriodicalIF":5.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142696601","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
Study on the effect of stress redistribution in different notched specimens of DD6 on the life of combined high and low cycle fatigue under high temperature 研究 DD6 不同缺口试样中的应力再分布对高温下高低循环组合疲劳寿命的影响
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-11-19 DOI: 10.1016/j.ijfatigue.2024.108713
L. Liu, Z.X. Wen, Z.F. Yue, J.D. Wang, H.S. Gao
{"title":"Study on the effect of stress redistribution in different notched specimens of DD6 on the life of combined high and low cycle fatigue under high temperature","authors":"L. Liu,&nbsp;Z.X. Wen,&nbsp;Z.F. Yue,&nbsp;J.D. Wang,&nbsp;H.S. Gao","doi":"10.1016/j.ijfatigue.2024.108713","DOIUrl":"10.1016/j.ijfatigue.2024.108713","url":null,"abstract":"<div><div>Under combined high and low cycle fatigue (CCF) loading, the multi-axial stress state induced by geometric discontinuities of different notch forms under the same stress amplitude can result in significant differences in fatigue performance of DD6 alloy. Therefore, it is of great importance to study the CCF behavior of Ni-base single-crystal alloy samples with differing notch geometries at the high temperatures. In order to obtain an approximate CCF lifespan, different stress amplitudes need to be applied to DD6 specimens with different notch forms. In this study, two kinds of notched DD6 plate specimens with [001] orientation were studied by CCF test at 760 °C, and the amplitudes of stresses were acquired under the same service life level. The effect of stress redistribution, in particular stress triaxiality, was evaluated on CCF lifetime of the DD6 specimens. A damage model with anisotropy considering stress triaxiality effect was suggested. The results indicated that the conventional stress–strain variables could not reflect the trend of CCF lifetime for different geometrical notched DD6 specimens, whereas the stress triaxiality at the CCF load peak could. A modified Basquin model was introduced for predicting CCF life according to the stress triaxiality at the peak loading. It can accurately and efficiently estimate the CCF life of two kinds of notched DD6 plate specimens, and the life prediction results fall within a scatter band of ±3 times of fatigue life.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"192 ","pages":"Article 108713"},"PeriodicalIF":5.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142696607","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 damage and life prediction for AISI H13 steel under cyclic thermomechanical loading 循环热机械加载下 AISI H13 钢的疲劳损伤和寿命预测
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-11-19 DOI: 10.1016/j.ijfatigue.2024.108718
Boya Wu , Guocai Xu , Meichen Liu , Yan Zhu , Junwan Li , Xiaochun Wu
{"title":"Fatigue damage and life prediction for AISI H13 steel under cyclic thermomechanical loading","authors":"Boya Wu ,&nbsp;Guocai Xu ,&nbsp;Meichen Liu ,&nbsp;Yan Zhu ,&nbsp;Junwan Li ,&nbsp;Xiaochun Wu","doi":"10.1016/j.ijfatigue.2024.108718","DOIUrl":"10.1016/j.ijfatigue.2024.108718","url":null,"abstract":"<div><div>Based on strain-controlled thermomechanical fatigue (TMF) experiments, this study conducts a comprehensive analysis of the TMF behavior of AISI H13 hot work die steel. Moreover, a life prediction model for the TMF behavior of AISI H13 steel has been developed and validated. The experimental results reveal that, under the in-phase (IP) and out-of-phase (OP) TMF conditions, the stress–strain response curves of AISI H13 steel under different mechanical strain amplitudes exhibits the similar evolution tendency. However, it is worth noting that in the stable TMF cycle, the hysteresis loop area is enlarged with the increase of the number of cycles, which can be attributed to the cyclic softening characteristics of the AISI H13 steel under cyclic thermomechanical loading. When examining different TMF conditions, it is found that at higher strain amplitudes and under OP TMF conditions, the hysteresis loop area significantly expands, leading to a substantial reduction in the TMF life of AISI H13 steel. From a microstructural perspective, the thermal–mechanical coupling effect makes the recovery of martensitic matrix and the coarsening of carbide precipitation, which substantiates the deterioration of mechanical properties of AISI H13 steel. Finally, a modified Ostergren model by integrating the hysteresis loop area has been developed to assess the TMF life of AISI H13 steel under complex thermomechanical loading conditions, and this refined model exhibits strong agreement with experimental data. An evaluation using scatter band shows that the predicted TMF life of AISI H13 steel are within 1.2 times the experimental values, which illustrates a high reliability and validity.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"192 ","pages":"Article 108718"},"PeriodicalIF":5.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719971","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
Three-dimensional fatigue crack initiation and propagation behavior of stress-corroded steel wires for bridge cables 桥梁缆索应力腐蚀钢丝的三维疲劳裂纹起始和扩展行为
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-11-19 DOI: 10.1016/j.ijfatigue.2024.108717
Rou Li , Hao Wang , Changqing Miao , Zhijie Yuan , Zongxing Zhang
{"title":"Three-dimensional fatigue crack initiation and propagation behavior of stress-corroded steel wires for bridge cables","authors":"Rou Li ,&nbsp;Hao Wang ,&nbsp;Changqing Miao ,&nbsp;Zhijie Yuan ,&nbsp;Zongxing Zhang","doi":"10.1016/j.ijfatigue.2024.108717","DOIUrl":"10.1016/j.ijfatigue.2024.108717","url":null,"abstract":"<div><div>The fatigue test was carried out to investigate the fracture morphology and fatigue life of stress-corroded steel wires. The influence of stress corrosion degree on the initial value of crack propagation and fracture toughness of steel wires was explored. The theoretical method of crack initiation and propagation life of corroded steel wires based on CM-EIFS (Corrosion Modified Equivalent Initial Flaw Size) model was proposed. Finally, the variation law of crack tip stress was studied through the numerical method considering the corrosion surface, and the general expression of shape factor of crack tip and the reduction factor of fracture toughness of corroded steel wires were given. The results showed that the fatigue life of steel wires had a good nonlinear decrease trend with the stress corrosion degree increase. The crack initiation is often located in the surface corrosion pit, and the initiation zone was related to the intermetallic compound containing Fe and Mn. It was necessary to consider the reduction of fracture toughness for steel wires with high degree of stress corrosion. When the stress corrosion degree reached 24 %, the fracture toughness of steel wire was only 50.86 MPa·m<sup>0.5</sup>, which was 52 % lower than that of the non-corrosion ones. The higher the stress corrosion degree and stress concentration factor, the lower the proportion of crack initiation life. When the stress concentration reached a certain degree, the total fatigue life was mainly composed of crack propagation life. The depth-width ratio of corrosion pit and the residual thickness of corroded steel wires were the key factors affecting the stress intensity factor at the crack tip. The three-dimensional crack propagation results obtained by XFEM (Extended Finite Element Method) based on the corrosion surface were highly consistent with the test results.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"192 ","pages":"Article 108717"},"PeriodicalIF":5.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142696606","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
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