Fatigue & Fracture of Engineering Materials & Structures最新文献

Parametric characterization of the Christopher–James–Patterson model for crack propagation in welded zone of A7N01 Aluminum alloys 克里斯托弗-詹姆斯-帕特森模型对 A7N01 铝合金焊接区裂纹扩展的参数特性分析

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-01 DOI: 10.1111/ffe.14423

Xi Liu, Yaohui Lu, Qiushi Wang, Chuan Lu, Neil James

{"title":"Parametric characterization of the Christopher–James–Patterson model for crack propagation in welded zone of A7N01 Aluminum alloys","authors":"Xi Liu, Yaohui Lu, Qiushi Wang, Chuan Lu, Neil James","doi":"10.1111/ffe.14423","DOIUrl":"https://doi.org/10.1111/ffe.14423","url":null,"abstract":"Aluminum alloy is a widely used material in railway vehicle structures. In order to accurately analyze the crack propagation mechanism of Aluminum alloy welding structures and predict their crack propagation life, this study focuses on the A7N01 Aluminum alloy and proposes a full-field strain solution method based on the least-squares method. For the first time, digital image correlation (DIC) experimental measurements are combined with the finite element analysis method to determine the shape and size of the plastic zone at the crack tip of the compact tension (CT) specimen. And it also calculates the crack propagation driving force parameters of the Christopher–James–Patterson (CJP) model using traditional crack propagation driving parameters. The research results revealed that the plastic zone at the crack tip captured by DIC experiments is in good agreement with the finite element simulation results. Additionally, the crack growth rate curve of the A7N01 Aluminum alloy, fitted based on the CJP model, is insensitive to the stress ratio. The results offer an effective approach to utilizing the da/dN-∆KCJP curve in analyzing A7N01 Aluminum alloy and welded structural failures, broadening the scope of engineering applications for the CJP model.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142429159","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

Corrosion fatigue cracking behaviors of Q690qE high-strength bridge steel as a weld joint in simulated marine environment 模拟海洋环境中作为焊接接头的 Q690qE 高强度桥梁钢的腐蚀疲劳开裂行为

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-01 DOI: 10.1111/ffe.14427

Cuiping Lu, Qiong Yao, Ningning Li, Liyang Sun, Wenhe Dai, Chuang Zhang, Hongchi Ma

引用次数: 0

Singularity analysis for V-notches in a piezoelectric multimaterial and functionally graded piezoelectric materials 压电多材料和功能分级压电材料中 V 形缺口的奇异性分析

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-08-31 DOI: 10.1111/ffe.14424

Shanlong Yao, Guibin Dai, Changzheng Cheng, Zhongrong Niu

引用次数: 0

Effects of thickness debit and stress concentration on superalloy DZ125 subjected to cyclic loading 厚度脱位和应力集中对承受循环加载的超级合金 DZ125 的影响

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-08-30 DOI: 10.1111/ffe.14435

Yang Gan, Qinzheng Yang, Yi Zhao, Xiaoan Hu

引用次数: 0

A spot weld element formulation and implementation for mesh-insensitive fatigue evaluation of lightweight structures 用于轻质结构网格不敏感疲劳评估的点焊元件配方与实施

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-08-29 DOI: 10.1111/ffe.14431

Lunyu Zhang, Shengjia Wu, Pingsha Dong

引用次数: 0

Assessment of fracture criteria for cracking behavior of asphalt concrete using various SCB specimen sizes 使用不同尺寸的 SCB 试样评估沥青混凝土开裂行为的断裂标准

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-08-29 DOI: 10.1111/ffe.14416

Ramin Momeni, Sadjad Pirmohammad

{"title":"Assessment of fracture criteria for cracking behavior of asphalt concrete using various SCB specimen sizes","authors":"Ramin Momeni, Sadjad Pirmohammad","doi":"10.1111/ffe.14416","DOIUrl":"https://doi.org/10.1111/ffe.14416","url":null,"abstract":"In this research, five fracture criteria (maximum tangential stress (MTS), generalized maximum tangential stress (GMTS), minimum strain energy density (SED), generalized minimum strain energy density (GSED), and modified maximum tangential stress (MMTS)) were evaluated for asphalt concrete using fracture data from tests conducted under various loading modes and conditions. Tests were performed on semi-circular bend (SCB) specimens of various sizes. Based on the results, the MTS criterion tends to overestimate fractures, while the GMTS criterion exhibits more precise predictions. The SED and GSED criteria inaccurately predict fractures, especially under certain loading conditions. The MMTS criterion shows superior predictive capability for asphalt concrete fractures. Specimen size influences fracture resistance, with larger specimens exhibiting higher fracture values. Overall, the MMTS criterion closely mirrors the crack growth behavior of asphalt concrete, highlighting its precision in predicting fracture results. The errors between the predictions of the fracture criteria MTS, GMTS, SED, GSED, and MMTS, and the experimental results ranged from 0% to 42.8%, 0% to 22.5%, 0% to 52.7%, 0% to 42.4%, and 0% to 14.5%, respectively.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430283","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 life prediction of notched components based on energy gradient using reconstructed critical distance theory 利用重构临界距离理论，基于能量梯度预测缺口部件的疲劳寿命

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-08-28 DOI: 10.1111/ffe.14432

Jumei Lu, Jianhui Liu, Fei Zhou, Xuemei Pan, Wenjun Kou, Youtang Li, Shengchuan Wu

引用次数: 0

Experimental investigations on normal mode nodes as support positions of a resonant testing facility for bending fatigue tests 将正常模式节点作为弯曲疲劳试验共振测试设备支撑位置的实验研究

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-08-28 DOI: 10.1111/ffe.14412

Clara Schramm, Dennis Birkner, Sebastian Schneider, Steffen Marx

{"title":"Experimental investigations on normal mode nodes as support positions of a resonant testing facility for bending fatigue tests","authors":"Clara Schramm, Dennis Birkner, Sebastian Schneider, Steffen Marx","doi":"10.1111/ffe.14412","DOIUrl":"https://doi.org/10.1111/ffe.14412","url":null,"abstract":"Large-scale fatigue testing is very important to the research on scale effects, which occur in large cyclic loaded structures, such as wind turbine towers. However, such experimental testing has a very high energy consumption. As an efficient alternative, this paper presents a new resonant testing facility for large-scale specimens under cyclic bending loads. The facility works as a 4-point bending test, in which the specimen is supported in the nodes of its first normal bending mode, where theoretically no reaction forces occur. Two counter-rotating imbalance motors with excitation frequencies near resonance generate a harmonic force acting on the specimen. Experimental trial fatigue tests on a steel pipe as a specimen were carried out, in order to validate the new testing setup. A great decrease in the support forces was reached by placing the supports at the normal mode nodes. Additionally, the behavior of the support forces under varying positions and excitation frequencies was also investigated. In summary, the resonant testing method combined with the supports at the normal mode nodes offers an efficient and energy-saving testing setup for large-scale fatigue tests.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14412","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430342","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

Experimental and numerical determination of the fatigue notch factor in as-built wire arc additive manufacturing steel components 用实验和数值方法确定现成线弧快速成型制造钢部件的疲劳缺口系数

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-08-28 DOI: 10.1111/ffe.14430

Davide Leonetti, Elena Zancato, Giovanni Meneghetti, Johan Maljaars

{"title":"Experimental and numerical determination of the fatigue notch factor in as-built wire arc additive manufacturing steel components","authors":"Davide Leonetti, Elena Zancato, Giovanni Meneghetti, Johan Maljaars","doi":"10.1111/ffe.14430","DOIUrl":"https://doi.org/10.1111/ffe.14430","url":null,"abstract":"Parts manufactured by wire arc additive manufacturing (WAAM) are characterized by a peculiar surface morphology, namely, surface waviness, that negatively affects the fatigue performance. To exploit the full potential of WAAM and minimize the need for postproduction work, it is crucial to utilize the components in the as-built state. This is because conventional machining techniques, typically employed for postprocessing operations, severely curtail the freedom of geometry of the components. This study focuses on an experimental and numerical characterization of the notch effect of the surface waviness for an AISI 308 LSi stainless steel. This is done by quantifying the fatigue notch factor in a probabilistic fashion, considering the results of ad-hoc designed fatigue tests. A finite element model is developed by considering a 3D scan of the geometry of WAAMed plates, allowing to determine the theoretical stress concentration factor. The fatigue notch factor is also estimated from the numerical model by making use of the gradient correction according to the FKM guidelines. To validate the numerical approach, test data produced for different testing conditions are correlated by using the local stress approach, showing that classical methods are also applicable to additive manufactured parts.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14430","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430344","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

Plastic damage fracture characteristics and constitutive modeling of rocks under uniaxial compression considering crack geometry 考虑裂缝几何形状的单轴压缩下岩石的塑性破坏断裂特征和构造模型

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-08-26 DOI: 10.1111/ffe.14425

Hongtao Xu, Tingye Qi, Guorui Feng, Tian Qiu, Haochen Wang, Linfei Wang, Zhicheng Zhang, Siyuan Cheng

{"title":"Plastic damage fracture characteristics and constitutive modeling of rocks under uniaxial compression considering crack geometry","authors":"Hongtao Xu, Tingye Qi, Guorui Feng, Tian Qiu, Haochen Wang, Linfei Wang, Zhicheng Zhang, Siyuan Cheng","doi":"10.1111/ffe.14425","DOIUrl":"https://doi.org/10.1111/ffe.14425","url":null,"abstract":"The study of damage and failure in fractured rock masses is crucial. This study employs the representative volume element (RVE) method to develop a microscale rock model. The model simulates the propagation and rupture of fractures by integrating factors including actual mineralogical composition, the Weibull distribution function, the Mohr–Coulomb damage criterion, and strain softening. Results indicate that fractures reduce the uniaxial compressive strength of the rock and that peak strength is significantly correlated with crack geometries. Plastic damage in rocks was categorized into three stages: elastic, rapid growth, and postpeak softening. A logistic growth model describes the plastic volume change curves for rocks with various fracture geometries, establishing the relationship between plastic damage volume and damage variables. Constitutive models for rocks with varying fracture geometries under uniaxial compression were formulated. The accuracy and applicability of these models were validated, providing a theoretical basis for rock engineering applications.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142430181","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