Fatigue & Fracture of Engineering Materials & Structures最新文献_第10页

Stress–Strain Response of AISI H13 Steel Subjected to Cyclic Thermomechanical Loading

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-11-08 DOI: 10.1111/ffe.14504

Boya Wu, Meichen Liu, Guocai Xu, Junwan Li, Xiaochun Wu

{"title":"Stress–Strain Response of AISI H13 Steel Subjected to Cyclic Thermomechanical Loading","authors":"Boya Wu, Meichen Liu, Guocai Xu, Junwan Li, Xiaochun Wu","doi":"10.1111/ffe.14504","DOIUrl":"https://doi.org/10.1111/ffe.14504","url":null,"abstract":"<div>\u0000 \u0000 This study investigates the stress–strain behavior of AISI H13 hot work die steel under thermomechanical fatigue (TMF) conditions. An electromagnetic-thermal-mechanical coupled finite element model was established to analyze the temperature and stress evolution during TMF cycles. Experimental results reveal that as TMF cycles increase, the hysteresis loop areas expand, and maximum tensile and compressive stress values decrease, indicating cyclic softening of AISI H13 steel. After undergoing TMF, observations show martensitic lath recovery and carbide coarsening along boundaries. Numerical results indicate thermal cycles cause temperature field inhomogeneity along the axial direction, which leads to a non-uniform distribution of internal stresses along the longitudinal axis. Besides, the TMF lifetime under numerical simulation is comparable to that obtained through experiments. Based on experimental and simulation data, four life prediction models are employed, with the Ostergren model showing the highest consistency with a reliability factor of 1.2.\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"599-616"},"PeriodicalIF":3.1,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113176","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

Mode II Fracture Properties and Microscopic Damage Characteristics of Granite Under Freeze–Thaw Cycles: Laboratory Testing

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-11-07 DOI: 10.1111/ffe.14491

Yuanjie Liang, Xia Li

{"title":"Mode II Fracture Properties and Microscopic Damage Characteristics of Granite Under Freeze–Thaw Cycles: Laboratory Testing","authors":"Yuanjie Liang, Xia Li","doi":"10.1111/ffe.14491","DOIUrl":"https://doi.org/10.1111/ffe.14491","url":null,"abstract":"<div>\u0000 \u0000 Rock masses in alpine regions inevitably undergo freeze–thaw (F–T) cycles, which affects the safety of infrastructure such as slopes, with shear failure being a significant concern. This study investigates the Mode II fracture behavior of F–T treated granite via the short core in compression (SCC) test, analyzing the related physical properties and mechanical properties while also discussing F–T damage mechanism at a microscopic level. Results reveal that as F–T cycles increase, the dynamic elastic modulus and P-wave velocity decrease, whereas porosity and backbone fractal dimension of pore scale increase, indicating a transition towards a large-scale pore. Mode II fracture toughness decreased by 31.19% and fracture process zone width increased by 248.49% with F–T cycles rising from 0 to 80, and related fractal dimension of surface morphology also increased by 11.17%. Microscopic observation reveals the microstructure deterioration induced by F–T treatment, indicating the correlation between microscopic damage and macroscopic fracture properties.\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"566-579"},"PeriodicalIF":3.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113232","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

Acoustic Emission–Based Shear Fracture Characterization of Ultra-High-Performance Concrete With Varying Steel Fiber Contents

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-11-07 DOI: 10.1111/ffe.14502

Zixian Liu, Menghan Fang, Yubo Jiao, Yaojia Chen, Hua Yang, Qifan Wu

{"title":"Acoustic Emission–Based Shear Fracture Characterization of Ultra-High-Performance Concrete With Varying Steel Fiber Contents","authors":"Zixian Liu, Menghan Fang, Yubo Jiao, Yaojia Chen, Hua Yang, Qifan Wu","doi":"10.1111/ffe.14502","DOIUrl":"https://doi.org/10.1111/ffe.14502","url":null,"abstract":"<div>\u0000 \u0000 This study investigates the shear fracture behaviors in ultra-high-performance concrete (UHPC) under direct shear conditions using Z-shaped specimens and acoustic emission (AE) monitoring. The effect of steel fiber (SSF) contents (1%, 2%, 2.5%, and 3%) on the failure process and the relative slip of cracks at different loading stages were measured and evaluated. The results indicate that increasing the SSF content significantly enhances the ultimate shear stress and ductility, effectively limits crack propagation and formation, and reduces the extent of damage for UHPC. During the failure process, an increase in the SSF content results in higher cumulative AE energy and a tendency for the peak frequency to shift towards the low-frequency range. Additionally, increasing the SSF content expands the range of wavelet entropy values and delays the occurrence of wavelet entropy. Due to the reinforcement effects of SSF, the primary crack type evolved from shear to tensile during the failure process.\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"580-598"},"PeriodicalIF":3.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113233","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 Approach for the Near-Tip Field Around V-Notch in Orthotropic Materials 正交异性材料v形缺口附近近尖端场的解析方法

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-11-05 DOI: 10.1111/ffe.14475

Adel Esmaeili, Amin Kuhzadmohammadi, Majid Safarabadi

{"title":"An Analytical Approach for the Near-Tip Field Around V-Notch in Orthotropic Materials","authors":"Adel Esmaeili, Amin Kuhzadmohammadi, Majid Safarabadi","doi":"10.1111/ffe.14475","DOIUrl":"https://doi.org/10.1111/ffe.14475","url":null,"abstract":"<div>\u0000 \u0000 This study introduces a novel theoretical framework for determining the notch stress intensity factors (NSIFs) in composite materials. The approach involves utilizing Irwin's complex stress functions for Mode I and Mode II loading conditions. By investigating displacement and singular stress components around V-notch tips, the research aims to provide a comprehensive understanding of NSIFs in composite materials. Three different composite materials were considered in the study to explore the relationship between stress and material properties. The stress singularity order, denoted as \u0000<math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>λ</mi>\u0000 </mrow>\u0000 <annotation>$$ lambda $$</annotation>\u0000 </semantics></math>, is determined through eigenequations. Moreover, explicit solutions for displacement and singular stress fields are derived for a more thorough understanding of the behavior around notches in composite materials. To validate the proposed theoretical framework, a rigorous numerical study is conducted using FEM on finite-size notches. The results obtained from the numerical simulations are compared with theoretical predictions to assess the accuracy and reliability of the developed approach.\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 1","pages":"487-501"},"PeriodicalIF":3.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868108","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

Feature Transfer Learning for Fatigue Life Prediction of Additive Manufactured Metals With Small Samples 小样本增材制造金属疲劳寿命预测的特征迁移学习

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-11-04 DOI: 10.1111/ffe.14497

Hao Wu, Zhi-Ming Fan, Lei Gan

引用次数: 0

Effect of Cyclic Load Frequency on the Fatigue Crack Nucleation and Growth of Annealed and Prestrained Austenitic SS 304 循环载荷频率对退火和预应变奥氏体ss304疲劳裂纹形核和扩展的影响

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-11-03 DOI: 10.1111/ffe.14484

Brenno L. Nascimento, Iris S. Santos, Luiara L. Santos, Matheus M. S. Reis, Ihana G. C. de Jesus, Sandro Griza

{"title":"Effect of Cyclic Load Frequency on the Fatigue Crack Nucleation and Growth of Annealed and Prestrained Austenitic SS 304","authors":"Brenno L. Nascimento, Iris S. Santos, Luiara L. Santos, Matheus M. S. Reis, Ihana G. C. de Jesus, Sandro Griza","doi":"10.1111/ffe.14484","DOIUrl":"https://doi.org/10.1111/ffe.14484","url":null,"abstract":"<div>\u0000 \u0000 The austenitic stainless steels are widely used in several engineering fields due to their high ductility, corrosion and high temperature performance. Despite its noble properties, components manufactured in austenitic stainless steel are subject to fatigue failure. Studies indicate that loading frequency can impact the austenitic stainless steel fatigue performance. In this scenario, the present study aims to evaluate the effect of frequencies of 3 and 30 Hz on the fatigue behavior of SS 304 alloy under load control in order to identify in which fatigue stage the effect is outstanding. Therefore, fatigue and fracture mechanics tests were evaluated on the alloy annealed at 1000°C. Furthermore, fatigue tests were also applied to the alloy after previous tensile plastic strain of 0.5. The analyses denoted a significant reduction in fatigue strength with increasing frequency, especially for the strained alloy. Fatigue crack nucleation is encouraged with greater load frequency. This behavior may be attributed to strain-induced martensite and other strain mechanisms such as twinning and slip bands that are encouraged by lower strain rates but are relieved by auto-heating achieved in higher frequencies, as mentioned in the literature, which decrease the strength to fatigue nucleation.\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 1","pages":"441-453"},"PeriodicalIF":3.1,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869265","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

Relation Between Striations Spacing and Fatigue Crack Growth Rates for Additive Manufactured Inconel 625 增材制造Inconel 625的条纹间距与疲劳裂纹扩展速率的关系

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-11-03 DOI: 10.1111/ffe.14493

Felipe Klein Fiorentin, Rita Dantas, Roya Darabi, Grzegorz Lesiuk, Miguel Figueiredo, Paulo Tavares de Castro, Abílio de Jesus

{"title":"Relation Between Striations Spacing and Fatigue Crack Growth Rates for Additive Manufactured Inconel 625","authors":"Felipe Klein Fiorentin, Rita Dantas, Roya Darabi, Grzegorz Lesiuk, Miguel Figueiredo, Paulo Tavares de Castro, Abílio de Jesus","doi":"10.1111/ffe.14493","DOIUrl":"https://doi.org/10.1111/ffe.14493","url":null,"abstract":"<div>\u0000 \u0000 The principles of the mechanisms for fatigue crack propagation in metals have been established several decades ago. By definition, fatigue might be summarized as a damage process imparted to a material under the action of cyclic loads. The relation between fatigue crack growth rates (FCGRs) and formation of striation marks has been a controversial topic. Some authors stated that, in certain fatigue regimes, several fatigue cycles are required to form a single striation. The disagreement found was the motivation for the present work. This study's main goal is to provide a comparison between the striation spacing and the respective FCGR. These analyses will be performed in a Nickel superalloy, Inconel 625, obtained via directed energy deposition. Investigation of the striations spacing are compared with data obtained from FCGR tests. A good agreement between striation spacing and FCGRs was found to intermediate and large values of stress intensity factor.\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 1","pages":"454-466"},"PeriodicalIF":3.1,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869262","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

A Two-Scale Model of Fretting Fatigue Crack Initiation Life Based on Long Short-Term Memory Networks Improved by Genetic Algorithm 基于遗传算法改进的长短期记忆网络微动疲劳裂纹起裂寿命二尺度模型

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-11-03 DOI: 10.1111/ffe.14487

Yazhou Xu, Yue Wu, Fang Yuan, Yangmin Feng, Bin Hao

引用次数: 0

Impact of SCB Specimen Size, Temperature, Loading Rate, and Loading Mode on Fracture Behavior of Asphalt Mixture Using Response Surface Method 基于响应面法的SCB试样尺寸、温度、加载速率和加载方式对沥青混合料断裂行为的影响

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-10-31 DOI: 10.1111/ffe.14474

Zahra Vaseghi, Sadjad Pirmohammad, Ramin Momeni

{"title":"Impact of SCB Specimen Size, Temperature, Loading Rate, and Loading Mode on Fracture Behavior of Asphalt Mixture Using Response Surface Method","authors":"Zahra Vaseghi, Sadjad Pirmohammad, Ramin Momeni","doi":"10.1111/ffe.14474","DOIUrl":"https://doi.org/10.1111/ffe.14474","url":null,"abstract":"<div>\u0000 \u0000 This study aimed to investigate the influence of semicircular bend (SCB) specimen size (R), loading mode (Me), and loading rate (Lr) on fracture resistance indicators, namely, fracture work (Wf), fracture energy (Gf), and fracture strength (Kf), of asphalt concrete at three different temperatures (−30°C, −20°C, and 10°C). Using Minitab software, response surface methodology (RSM) under central composite design (CCD) was employed to design experiments and develop predictive models for Wf, Gf, and Kf in terms of R, Me, and Lr at each temperature. The results demonstrated that the RSM models accurately predicted the fracture test data for all temperatures. The analysis of variance (ANOVA) revealed that R, Me, and Lr significantly influenced Wf, Gf, and Kf at each temperature, whereas the square terms R2, Me2, and Lr2 were not significant. The significance of two-way interaction terms varied across different responses and temperatures. Overall, the experiments conducted at −30°C, −20°C, and 10°C indicated that varying R, Lr, and Me had notable effects on Wf, Gf, and Kf. Increasing R and Me while decreasing Lr resulted in an increase in Wf and Gf. Furthermore, Kf exhibited a direct relationship with R and Lr but an inverse relationship with Me.\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 1","pages":"382-403"},"PeriodicalIF":3.1,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869227","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 the P-S-N Curve Fitting Method of Notched Specimens Considering Small Sample Properties 考虑小样本特性的缺口试样P-S-N曲线拟合方法研究

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-10-31 DOI: 10.1111/ffe.14490

Ziyang Zhang, Jianhui Liu, Juntai Hu, Qingjun Wu, Shenglei Wu

{"title":"Research on the P-S-N Curve Fitting Method of Notched Specimens Considering Small Sample Properties","authors":"Ziyang Zhang, Jianhui Liu, Juntai Hu, Qingjun Wu, Shenglei Wu","doi":"10.1111/ffe.14490","DOIUrl":"https://doi.org/10.1111/ffe.14490","url":null,"abstract":"<div>\u0000 \u0000 Aiming at the issue of fatigue test data for large-scale mechanical components of building steel are very limited, a method for fitting P-S-N curves under small sample data of notched specimens is proposed to predict fatigue life. First, a fatigue life subsample augmented and its reliability assessment method are established, based on Bayesian hierarchical modeling and modified Monte Carlo method. Second, a clustering combination weighting method is proposed, to define weights of hidden variables of the binomial mixture Weibull distribution, and the expectation–maximization algorithm is used to determine probability density function of the distribution. Finally, the P-S-N curves under various failure probabilities are fitted with Weibull distributed life models, and the convergence and prediction accuracy of the different models are compared. The results show that the fatigue data of small samples can be predicted better by using mixed Weibull distribution, and the fitting P-S-N curve is more reliable and accurate.\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 1","pages":"404-422"},"PeriodicalIF":3.1,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869228","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