International Journal of Fatigue最新文献

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Research on probability model and reliability of multiaxial fatigue life based on Huffman model 基于 Huffman 模型的多轴疲劳寿命概率模型与可靠性研究
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-10-30 DOI: 10.1016/j.ijfatigue.2024.108675
Xiaoting Liu , Xuding Song , Wanjin Guo , Jiaming Liu , Yuanzhe Dong
{"title":"Research on probability model and reliability of multiaxial fatigue life based on Huffman model","authors":"Xiaoting Liu ,&nbsp;Xuding Song ,&nbsp;Wanjin Guo ,&nbsp;Jiaming Liu ,&nbsp;Yuanzhe Dong","doi":"10.1016/j.ijfatigue.2024.108675","DOIUrl":"10.1016/j.ijfatigue.2024.108675","url":null,"abstract":"<div><div>Various uncertainties are widely presented in engineering problems, such as material properties, loads, geometries, etc. Research has indicated that there is a significant relationship between the dispersion of fatigue life and the material properties. Therefore, it is necessary to study the effect of the parameter distribution of the material on the uncertainty of fatigue life. However, there are very few studies involving the distribution of fatigue performance parameters {σ<sub>f</sub><sup>’</sup>, ε<sub>f</sub><sup>’</sup>} of materials. In this paper, a probability framework of multiaxial fatigue life prediction based on the uncertainty of material parameters {σ<sub>f</sub><sup>’</sup>, ε<sub>f</sub><sup>’</sup>} was established, which focuses on quantifying the distribution of material parameters {σ<sub>f</sub><sup>’</sup>, ε<sub>f</sub><sup>’</sup>} based on the Huffman model. Next, based on the Fatemi-Socie (FS) model and the distribution of strain life parameters {σ<sub>f</sub><sup>’</sup>, ε<sub>f</sub><sup>’</sup>}, the probability field of Δ<em>γ</em><sub>eq</sub>/2-<em>N</em> curves were obtained, and experimental data were distributed around the predicted average life. In addition, a time-dependent multiaxial fatigue reliability analysis method based on the Palmgren-Miner rule and <em>P</em>-Δ<em>γ<sub>eq</sub></em>/2-<em>N</em> was derived, and the reliability curves were obtained under four multiaxial loading cases.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"191 ","pages":"Article 108675"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592805","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
Improving fatigue life of a titanium alloy through coupled electromagnetic treatments 通过耦合电磁处理提高钛合金的疲劳寿命
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-10-30 DOI: 10.1016/j.ijfatigue.2024.108676
Hongfei Sun , Liang Zhang , Yuan Wang , Yi Qin , Zhiqiang Xie , Lila Ashi , Ning Xu , Kunlan Huang , Jie Wang , Jigang Huang
{"title":"Improving fatigue life of a titanium alloy through coupled electromagnetic treatments","authors":"Hongfei Sun ,&nbsp;Liang Zhang ,&nbsp;Yuan Wang ,&nbsp;Yi Qin ,&nbsp;Zhiqiang Xie ,&nbsp;Lila Ashi ,&nbsp;Ning Xu ,&nbsp;Kunlan Huang ,&nbsp;Jie Wang ,&nbsp;Jigang Huang","doi":"10.1016/j.ijfatigue.2024.108676","DOIUrl":"10.1016/j.ijfatigue.2024.108676","url":null,"abstract":"<div><div>TC11 titanium alloy is widely used in the manufacture of key components such as blades of gas turbine and aero engine because of its high specific strength and good processing performance. In the case of gas turbine or aero engine, the fatigue performance of TC11 will directly determine the life of the turbine or engine, and the surface residual stress generated on the alloy during manufacturing often affects the fatigue life of the material. In this study, a new method of coupled electromagnetic treatment (CEMT) was applied to regulate the surface residual stress of the alloy after manufacturing, so as to improve the fatigue life of the TC11. The results show that after the CEMT, the residual compressive stress in the length direction and width direction increased by 63.7% and 56.0% respectively, the fatigue life of the TC11 is increased by 39.9%. The microstructure analysis shows that after CEMT, the width of fatigue striations is significantly reduced. This paper proposes that CEMT can be used as an effective method to adjust the residual stress of materials and improve the fatigue life of titanium alloys. The research is also relevant for improvement of the fatigue life of other alloy materials.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"191 ","pages":"Article 108676"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586605","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
Research on accelerated thermal fatigue testing and life prediction of Al-Si alloy pistons under start-stop cycles 铝硅合金活塞在启停循环下的加速热疲劳测试和寿命预测研究
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-10-30 DOI: 10.1016/j.ijfatigue.2024.108677
Jie Yan, Qipei Tong, Weizheng Zhang, Yanpeng Yuan, Shuang Jin, Zhenyao Guo, Haonan Zhang, Yunle Yu, Zicong Cao
{"title":"Research on accelerated thermal fatigue testing and life prediction of Al-Si alloy pistons under start-stop cycles","authors":"Jie Yan,&nbsp;Qipei Tong,&nbsp;Weizheng Zhang,&nbsp;Yanpeng Yuan,&nbsp;Shuang Jin,&nbsp;Zhenyao Guo,&nbsp;Haonan Zhang,&nbsp;Yunle Yu,&nbsp;Zicong Cao","doi":"10.1016/j.ijfatigue.2024.108677","DOIUrl":"10.1016/j.ijfatigue.2024.108677","url":null,"abstract":"<div><div>As one of the most critical components in the combustion chamber of diesel engines, pistons operate under high temperature and pressure conditions for extended periods, which increases the likelihood of failures such as thermal fatigue. This paper first utilizes finite element simulation to obtain the temperature and stress field distribution of an Al-Si alloy piston under actual engine conditions. The results indicate that the throat area of the piston is the most susceptible to fatigue failure. Based on this, accelerated thermal fatigue tests were conducted to study the influence of various experimental factors on piston life, as well as to analyze the weight of each factor. Results from macroscopic and microscopic analyses of cracks using a scanning electron microscope show that fatigue cracks originate at the interface between the aluminum matrix and the detached hard particles. The cracking at the piston throat exhibits clear characteristics of ductile fracture, which is the result of cumulative fatigue damage. Therefore, from the perspective of continuum damage mechanics, it is considered to characterize the equivalent stress using the average loading rate during the loading phase and the maximum axial temperature gradient, establishing an experimental life prediction model for Al-Si alloy pistons.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"191 ","pages":"Article 108677"},"PeriodicalIF":5.7,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586680","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
Short fatigue crack growth sensitivity to thermo-mechanical fatigue loading 短疲劳裂纹增长对热机械疲劳加载的敏感性
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-10-29 DOI: 10.1016/j.ijfatigue.2024.108651
Nicolas Leost , Djamel Missoum-Benziane , Matthieu Rambaudon , Laurent Cameriano , François Comte , Brice Le Pannerer , Vincent Maurel
{"title":"Short fatigue crack growth sensitivity to thermo-mechanical fatigue loading","authors":"Nicolas Leost ,&nbsp;Djamel Missoum-Benziane ,&nbsp;Matthieu Rambaudon ,&nbsp;Laurent Cameriano ,&nbsp;François Comte ,&nbsp;Brice Le Pannerer ,&nbsp;Vincent Maurel","doi":"10.1016/j.ijfatigue.2024.108651","DOIUrl":"10.1016/j.ijfatigue.2024.108651","url":null,"abstract":"<div><div>Most high-temperature components are subject to out-of-phase thermomechanical fatigue (OP-TMF), which induces crack growth at low temperatures. However, OP-TMF has been little studied in the context of short cracks. This study focuses on the experimental sensitivity of OP-TMF loading conditions playing on temperature range, gradient, and dwell time for thin sheet superalloy specimens. The material of interest is a Co-based superalloy, HA188. It is widely used in combustion chambers.</div><div>The experimental analysis is based on full-field measurements for temperature, strain and damage by infrared thermography, digital image correlation and high resolution images from 300 to 900<!--> <!-->°C. The main conclusion is that the temperature gradient, together with the temperature amplitude, largely determines the strain amplitude and subsequent fatigue crack growth rate (FCGR) of short cracks. In situ measurements of damage and crack closure were obtained using supervised machine learning based on images. This clarifies that crack closure is only partial and that the crack network growth rate is consistent with the individual short crack growth rate. Finally, 3D finite element analysis considering realistic temperature field and strain energy based FCGR model was able to evaluate the fatigue life in this context. It is shown that the OP-TMF FCGR is very close to the FCGR of the maximum temperature of the TMF cycle due to partial crack closure.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"191 ","pages":"Article 108651"},"PeriodicalIF":5.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663212","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
Exploration of the high-cycle fatigue properties of Al-rich interstitial free steels stabilized by Ti and Nb 探索由 Ti 和 Nb 稳定的富 Al 间隙游离钢的高循环疲劳特性
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-10-28 DOI: 10.1016/j.ijfatigue.2024.108674
Benjamin Guennec , Rameez R. Tamboli , Kentaro Nagano , Takahiro Kinoshita , Noriyo Horikawa , Hiroshi Fujiwara , Basudev Bhattacharya , Suhash R. Dey
{"title":"Exploration of the high-cycle fatigue properties of Al-rich interstitial free steels stabilized by Ti and Nb","authors":"Benjamin Guennec ,&nbsp;Rameez R. Tamboli ,&nbsp;Kentaro Nagano ,&nbsp;Takahiro Kinoshita ,&nbsp;Noriyo Horikawa ,&nbsp;Hiroshi Fujiwara ,&nbsp;Basudev Bhattacharya ,&nbsp;Suhash R. Dey","doi":"10.1016/j.ijfatigue.2024.108674","DOIUrl":"10.1016/j.ijfatigue.2024.108674","url":null,"abstract":"<div><div>The addition of Al element is a promising method to enhance the deep drawing ability of interstitial free steels, since it favors a strong normal direction fiber texture. However, the scarcity of experimental results on the mechanical properties of such Al-rich interstitial free grades is detrimental to its potential applications in various industrial fields. In the present work, the high-cycle fatigue properties of Al-rich interstitial-free and high-strength interstitial-free steels have been investigated. Al-rich interstitial free steel presents the lowest fatigue endurance at 10<sup>7</sup> cycles among the materials investigated (158 MPa), mainly driven by its coarse microstructure. Furthermore, its lower Mn concentration in comparison with high-strength interstitial-free grades provokes grain shape change mechanism, resulting in the occurrence of a transient intergranular fatigue crack propagation feature. Despite their similar microstructures and monotonic strengths, Al-rich high-strength interstitial-free grade reveals a fatigue endurance at 10<sup>7</sup> cycles of 273 MPa, significantly larger than its conventional Al concentration counterpart (i.e., value of 233 MPa). This gap mainly stems from the generation of extended dislocation substructures in Al-rich grade, which tends to prevent early fatigue crack propagation.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"191 ","pages":"Article 108674"},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586604","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
Corrigendum to “A strain energy density design approach for large cast iron components: From microstructural analysis to multiaxial fatigue response” [Inter. J. Fatigue 175 (2023) 107824] 大型铸铁部件的应变能量密度设计方法:从微观结构分析到多轴疲劳响应" [Inter. J. Fatigue 175 (2023) 107824]
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-10-24 DOI: 10.1016/j.ijfatigue.2024.108668
M. Pedranz , V. Fontanari , C. Santus , D. Lusuardi , F. Berto , M. Benedetti
{"title":"Corrigendum to “A strain energy density design approach for large cast iron components: From microstructural analysis to multiaxial fatigue response” [Inter. J. Fatigue 175 (2023) 107824]","authors":"M. Pedranz ,&nbsp;V. Fontanari ,&nbsp;C. Santus ,&nbsp;D. Lusuardi ,&nbsp;F. Berto ,&nbsp;M. Benedetti","doi":"10.1016/j.ijfatigue.2024.108668","DOIUrl":"10.1016/j.ijfatigue.2024.108668","url":null,"abstract":"","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"190 ","pages":"Article 108668"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663189","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
Optimization and forecasting of reinforced wire ropes for tower crane by using hybrid HHO-PSO and ANN-HHO algorithms 使用混合 HHO-PSO 和 ANN-HHO 算法优化和预测塔式起重机的钢筋钢丝绳
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-10-24 DOI: 10.1016/j.ijfatigue.2024.108663
Saravana Kumar Palanisamy, Manonmani Krishnaswamy
{"title":"Optimization and forecasting of reinforced wire ropes for tower crane by using hybrid HHO-PSO and ANN-HHO algorithms","authors":"Saravana Kumar Palanisamy,&nbsp;Manonmani Krishnaswamy","doi":"10.1016/j.ijfatigue.2024.108663","DOIUrl":"10.1016/j.ijfatigue.2024.108663","url":null,"abstract":"<div><div>Wire rope is a vital component of every crane. Wire rope faults are related to the operation, fabrication environment, etc., and the prevalent mode of failure is fatigue. The aim of this study is to develop an advanced tower crane applicable to wire rope with integrated reinforcement. Steel wire ropes are superiorly used in several tower crane applications, but they may create certain failures such as less fatigue and wear-resistant. In this study, steel wires are strengthened by granite and Zinc oxide (ZnO) reinforcement. Two sets of wire ropes are prepared as complete and partial reinforcement of steel wire with seven strands and 15 wires. The failure tests such as hardness, wear analysis, tensile strength, and fatigue life are optimized using hybrid Harris Hawk optimization-based Particle swarm Optimization (Hybrid HHO-PSO). Besides, the experimented wire rope performances are predicted using hybrid Artificial Neural Network based HHO (Hybrid ANN-HHO). Fully reinforced wire ropes provide better performances for both experimented and optimization behaviors. This provides 1818 MPa of maximum tensile strength, 0.23 mm of minimal wear depth, and 3.38x10<sup>4</sup> times better fatigue life. In the HHO-PSO optimization method, the obtained better tensile strength is 1822 MPa, wear depth is 0.66 mm, and Fatigue life is 3.57 x104 times. Besides, from the predicted outcomes, ANN-HHO provides a minimal error value than the ANN approach. The result of this study will open up different ways for the advancement of wire rope in tower crane application by improving its load bearing capacity. The outcomes from this research can be practically applicable for increasing the load bearing capacity of the tower crane without increasing the number of wires and strands in the wire rope.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"190 ","pages":"Article 108663"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552734","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
Low-cycle fatigue properties and fracture location transition mechanism of dissimilar steel welded joints in towers of wind turbines 风力涡轮机塔架异种钢焊接接头的低循环疲劳特性和断裂位置转换机制
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-10-24 DOI: 10.1016/j.ijfatigue.2024.108672
Yarong Liu , Baoming Gong , Shuo Liu , Caiyan Deng , Yangyang Zhao , Yong Liu , Weitao Hu
{"title":"Low-cycle fatigue properties and fracture location transition mechanism of dissimilar steel welded joints in towers of wind turbines","authors":"Yarong Liu ,&nbsp;Baoming Gong ,&nbsp;Shuo Liu ,&nbsp;Caiyan Deng ,&nbsp;Yangyang Zhao ,&nbsp;Yong Liu ,&nbsp;Weitao Hu","doi":"10.1016/j.ijfatigue.2024.108672","DOIUrl":"10.1016/j.ijfatigue.2024.108672","url":null,"abstract":"<div><div>This study investigates the low-cycle fatigue (LCF) behavior of two types of dissimilar steel welded joints (DSWJs): AISI 1035 &amp; S550Q and AISI 1020 &amp; S550Q. Digital image correlation (DIC) and finite element analysis (FEA) were used to analyze the heterogeneous strain distribution. The results reveal that the location of maximum strain, which is load-dependent and related to strength mismatch, corresponds to the fracture location of the LCF specimens. Specifically, the crack initiation site shifts from the weld toe to the base metal as strain increases. Moreover, the weld reinforcement of the DSWJs significantly affects the failure site transition, introducing strain concentration at lower stress levels while enhancing deformation resistance at higher stress levels, as evidenced by DIC strain measurements and FEA. These findings highlight the importance of joint reinforcement profile, strength mismatch and external load level in designing DSWJs for wind turbine towers against LCF failure.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"190 ","pages":"Article 108672"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142527874","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
Coupling physics in artificial neural network to predict the fatigue behavior of corroded steel wire 人工神经网络中的耦合物理学预测腐蚀钢丝的疲劳行为
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-10-24 DOI: 10.1016/j.ijfatigue.2024.108669
Fan Yi , Huan Lei , Qingfang Lv , Yu Zhang
{"title":"Coupling physics in artificial neural network to predict the fatigue behavior of corroded steel wire","authors":"Fan Yi ,&nbsp;Huan Lei ,&nbsp;Qingfang Lv ,&nbsp;Yu Zhang","doi":"10.1016/j.ijfatigue.2024.108669","DOIUrl":"10.1016/j.ijfatigue.2024.108669","url":null,"abstract":"<div><div>To accurately predict the fatigue life of corroded steel wire, the authors proposed an artificial neural network (ANN) model and a probabilistic physics-guided neural network (PPgNN) model. Factors including stress range, mean stress, and corrosion rate were considered as input features of these two neural networks. The ANN model exhibited the best prediction accuracy with a determination coefficient of 0.94; however, it cannot capture the dispersion of fatigue life. Through introduction of physics constraints, PPgNN model was able to predict the standard deviation of fatigue life. The results showed that 94.79% of the dataset was within the 95% confidence interval.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"190 ","pages":"Article 108669"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552732","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
An analytical model for predicting fatigue crack arrest and growth behavior in metal plates strengthened with unbonded prestressed reinforcing strips 预测使用无粘结预应力钢筋条加固的金属板疲劳裂纹捕捉和增长行为的分析模型
IF 5.7 2区 材料科学
International Journal of Fatigue Pub Date : 2024-10-24 DOI: 10.1016/j.ijfatigue.2024.108671
Wei Zhou , Lingzhen Li , Wandong Wang , Yu’e Ma
{"title":"An analytical model for predicting fatigue crack arrest and growth behavior in metal plates strengthened with unbonded prestressed reinforcing strips","authors":"Wei Zhou ,&nbsp;Lingzhen Li ,&nbsp;Wandong Wang ,&nbsp;Yu’e Ma","doi":"10.1016/j.ijfatigue.2024.108671","DOIUrl":"10.1016/j.ijfatigue.2024.108671","url":null,"abstract":"<div><div>Fatigue crack arrest and life extension of metallic structures can be achieved by using prestressed strips for fatigue strengthening. However, the popularization of prestressed strengthening techniques has been limited by lack of versatile analytical methods. In this paper, an analytical method is developed for predicting the fatigue behavior of centrally cracked metal plates after being anchored with prestressed reinforcing strips, based on linear elastic fracture mechanics and the superposition method of stress intensity factors. The force transfer between reinforcing strips and metal cracked plates is modeled using the displacement compatibility principle. The finite-width correction factor for centrally cracked metal plates subjected to four-point concentrated forces is derived, allowing the model to analyze the effect of different anchorage locations on the effectiveness of strengthening. The analytical model is validated through experimental data and finite element analysis. The results show that the model is highly accurate and can be used to analyze how different anchorage locations affect fatigue reinforcement.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"190 ","pages":"Article 108671"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552733","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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