Fatigue & Fracture of Engineering Materials & Structures最新文献_第2页

Comparison of Self-Heating Behavior Between Continuous and Interrupted Control Modes 连续和中断控制模式的自热行为比较

IF 3.2 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-24 DOI: 10.1111/ffe.70038

Hamza Elhadri, Johann Petit, Naila Hfaiedh, Danièle Wagner, Olivier Polit

{"title":"Comparison of Self-Heating Behavior Between Continuous and Interrupted Control Modes","authors":"Hamza Elhadri, Johann Petit, Naila Hfaiedh, Danièle Wagner, Olivier Polit","doi":"10.1111/ffe.70038","DOIUrl":"https://doi.org/10.1111/ffe.70038","url":null,"abstract":"<div>\u0000 \u0000 <p>In gigacyclic fatigue testing, reaching 10<sup>9</sup> cycles within a reasonable duration is challenging, leading to the use of ultrasonic fatigue machines operating at 20 kHz (UFT). However, the high testing frequency causes significant temperature rises, potentially enhancing microplasticity and leading to premature failure. This study compares two control modes in gigacyclic fatigue: continuous and interrupted (pulse-pause) during self-heating tests on UFT. Two materials with distinct thermal properties, steel 42CrMo4 and aluminum alloy AA2024-T351, were tested. The temperature evolution was measured using an infrared camera. Then, a local expression of the heat equation is used to estimate the intrinsic dissipation, denoted as \u0000<span></span><math>\u0000 <msub>\u0000 <mi>d</mi>\u0000 <mn>1</mn>\u0000 </msub></math>. Results showed that both modes led to temperature increases with higher displacement, but pulse-pause caused a smaller temperature rise. Reducing the pulse time relative to the pause time decreased temperature variation. For 42CrMo4 steel, self-heating was more pronounced than for AA2024-T351, and the \u0000<span></span><math>\u0000 <msub>\u0000 <mi>d</mi>\u0000 <mn>1</mn>\u0000 </msub></math> value increased with displacement amplitude.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 10","pages":"4517-4527"},"PeriodicalIF":3.2,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013197","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 Crack Initiation in Parallel Double Cracks Based on the Generalized Maximum Tangential Stress Criterion 基于广义最大切向应力准则的平行双裂纹起裂研究

IF 3.2 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-23 DOI: 10.1111/ffe.70037

Junyu Wu, Shu Zhu, Zhende Zhu, Yun Jia

{"title":"Study on the Crack Initiation in Parallel Double Cracks Based on the Generalized Maximum Tangential Stress Criterion","authors":"Junyu Wu, Shu Zhu, Zhende Zhu, Yun Jia","doi":"10.1111/ffe.70037","DOIUrl":"https://doi.org/10.1111/ffe.70037","url":null,"abstract":"<div>\u0000 \u0000 <p>This study proposes a simplified method for calculating the initiation stress of parallel double cracks under compression, based on the generalized maximum tangential stress (GMTS) criterion. The stress intensity factor (SIF) of parallel double cracks is derived by considering the crack interaction mechanism and the superposition method. Using discrete element software, uniaxial compression tests were performed on parallel double crack specimens with varying geometries. The predicted results of the proposed calculation method have been validated through numerical simulations and physical model experiments. The findings demonstrate that incorporating T-stress into the calculation significantly improves the prediction of initiation stress. Crack inclination angle emerges as the predominant factor of initiation stress among geometric parameters. With relatively small crack inclination angles, negative T-stress suppresses fracture initiation, while for larger angles, positive T-stress facilitates fracture initiation.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 10","pages":"4290-4302"},"PeriodicalIF":3.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013178","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

Effect of Contours on the Mechanical Behavior of Metal Extrusion Additive Manufacturing Parts: A Study on Notched 17-4PH Stainless Steel 轮廓对金属挤压增材制造零件力学行为的影响：缺口17-4PH不锈钢的研究

IF 3.2 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-23 DOI: 10.1111/ffe.70041

Eldane Yvana Kamani Tienkoue, Joseph Marae Djouda, Mohamed Ali Bouaziz, François Hild

{"title":"Effect of Contours on the Mechanical Behavior of Metal Extrusion Additive Manufacturing Parts: A Study on Notched 17-4PH Stainless Steel","authors":"Eldane Yvana Kamani Tienkoue, Joseph Marae Djouda, Mohamed Ali Bouaziz, François Hild","doi":"10.1111/ffe.70041","DOIUrl":"https://doi.org/10.1111/ffe.70041","url":null,"abstract":"<p>Material extrusion allows for the fabrication of metallic parts with competitive cost and flexibility in setting fabrication parameters. However, the parts contain defects that are due to the deposition route itself and to the removal of polymers during debinding and sintering. These defects affect the mechanical properties. It is therefore necessary to assess the mechanical properties of the parts with respect to such processing parameters. In this paper, the relationship between two configurations of notch, deposited layer thickness, and the mechanical response of additively manufactured metallic samples is analyzed. The presence of contours in the notch significantly affects the mechanical response. Samples with a machined notch and a 50-μm deposited layer thickness led to brittle fracture, while those with a 125-μm layer thickness experienced stable crack propagation before failure. The deformation mechanisms varied depending on the notch configuration, with strain concentrations at contour boundaries for samples with additively manufactured notches. The crack propagation strongly correlated with the sample mesostructure, often following the ±45° orientation of deposited layers. Debonding at the boundary between the last contour and the infill zone was a common failure mode for the studied samples.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 10","pages":"4339-4351"},"PeriodicalIF":3.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.70041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013179","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

An Adhesive Bonded Single Lap Joint Model 胶粘接单搭接模型

IF 3.2 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-23 DOI: 10.1111/ffe.70017

G. Cricrì, F. Penta

{"title":"An Adhesive Bonded Single Lap Joint Model","authors":"G. Cricrì, F. Penta","doi":"10.1111/ffe.70017","DOIUrl":"https://doi.org/10.1111/ffe.70017","url":null,"abstract":"<p>This paper investigates the mechanical behavior of lap joints by modeling adhesive damage and fracture using the cohesive crack technique. To improve predictive accuracy, the study adopts a linear softening law for the adhesive shear traction-separation response and neglects peeling effects. The main goal is to derive closed-form solutions for the mechanical behavior of lap joints under monotonic loading, reassess traditional failure criteria, and develop a framework linking failure mechanisms to joint length. For short joints, where the adhesive shear traction distribution is nearly uniform, joint strength can be accurately estimated using the average stress method. In contrast, for very long joints, the tractions become highly localized, making the Griffith energy-based fracture criterion a more suitable predictor of failure. The model further shows that a crack in the adhesive layer can only nucleate and propagate when the joint bonded length exceeds a critical value \u0000<span></span><math>\u0000 <msup>\u0000 <mrow>\u0000 <mi>L</mi>\u0000 </mrow>\u0000 <mrow>\u0000 <mo>∗</mo>\u0000 </mrow>\u0000 </msup></math>, which is specific to each adhesive-adherend system. These theoretical results are validated through two-dimensional finite element simulations, which confirm the accuracy and predictive power of the proposed approach.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 10","pages":"4319-4338"},"PeriodicalIF":3.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.70017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013177","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

Influence of Ultrasonic Surface Rolling Process on the Correlation Between Fatigue Strength and Crack Initiation Radius Ratio in Notched Inconel 718 Specimens 超声表面轧制工艺对缺口Inconel 718试样疲劳强度与裂纹起裂半径比相关性的影响

IF 3.2 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-23 DOI: 10.1111/ffe.70033

Fei Li, Yilong Liang, Xinmao Qin, Guigui Peng, Xu Huang, Lingling Wang, Xing Ran

{"title":"Influence of Ultrasonic Surface Rolling Process on the Correlation Between Fatigue Strength and Crack Initiation Radius Ratio in Notched Inconel 718 Specimens","authors":"Fei Li, Yilong Liang, Xinmao Qin, Guigui Peng, Xu Huang, Lingling Wang, Xing Ran","doi":"10.1111/ffe.70033","DOIUrl":"https://doi.org/10.1111/ffe.70033","url":null,"abstract":"<div>\u0000 \u0000 <p>This study examines the effect of ultrasonic rolling on the high-cycle fatigue strength of notched Inconel 718 superalloy. Fatigue strength and crack initiation location are analyzed from microstructural, stress-state, and fatigue-strength perspectives. Results show fatigue strength varies significantly with crack initiation location (normalized radius ratio <i>A</i>). Small cracks originate within the modified layer due to axial stress gradients. Peak strength is governed by stress concentration and triaxiality at crack initiation, affecting dislocation dynamics and γ″ phase strengthening. For <i>Kt</i> = 1.13, peak fatigue strength (700 MPa) occurs when A reaches 0.064, balancing dislocation driving force and precipitation resistance. Beyond <i>A</i> = 0.064, increased triaxiality reduces dislocation emission force, leading to stress concentration, cleavage cracking, and reduced fatigue strength (400 MPa). Focused ion beam (FIB) analysis confirms significantly higher dislocation density in high-stress triaxial regions compared with low-stress regions due to difficulty in dislocation pile-up around precipitates.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 10","pages":"4303-4318"},"PeriodicalIF":3.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013180","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

Effect of Aggregate Size on the Fracture Behavior of Concrete Under Modes I, III, and I/III Conditions I、III和I/III模式下骨料粒径对混凝土断裂行为的影响

IF 3.2 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-22 DOI: 10.1111/ffe.70028

Rashid Afshar, Lohrasb Faramarzi, Mirmilad Mirsayar, Behnam Shahbazian, Mohammad Reza Mohammad Aliha

{"title":"Effect of Aggregate Size on the Fracture Behavior of Concrete Under Modes I, III, and I/III Conditions","authors":"Rashid Afshar, Lohrasb Faramarzi, Mirmilad Mirsayar, Behnam Shahbazian, Mohammad Reza Mohammad Aliha","doi":"10.1111/ffe.70028","DOIUrl":"https://doi.org/10.1111/ffe.70028","url":null,"abstract":"<div>\u0000 \u0000 <p>In this paper, the effects of aggregate size and its corresponding appropriate specimen size on the fracture behavior of concrete under pure mode I, pure mode III, and mixed mode I/III are examined experimentally. The innovation of the present study lies in the use of edge notched disc bend (ENDB) specimens with sizes appropriately scaled to a wide range of aggregate gradations, from mortar to coarse-grained concrete, allowing for meaningful assessment of fracture behavior under mixed-mode I/III conditions. The outcomes provide new insights into the effects of aggregate size on fracture toughness, crack propagation, and applicability of various fracture criteria. It was revealed that aggregate size has a substantial impact on crack propagation behavior under diverse loading conditions. By clarifying the distinction between aggregate volume fraction and maximum aggregate size, we found that fracture toughness generally increases with aggregate size. Larger aggregates contribute to enhanced fracture resistance by promoting greater energy dissipation and facilitating crack bridging mechanisms. Moreover, the experimental results are predicted using several three-dimensional fracture criteria. It is shown that strain-based fracture models exhibit better performance in forecasting fracture behavior in the samples containing larger aggregates than their energy-based and stress-based counterparts.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 10","pages":"4259-4274"},"PeriodicalIF":3.2,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012724","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

Numerical Study on the Fracture Trajectories and Mechanisms of Hole-Contained Brazilian Discs: The Role of Size Effects and Arrangements 含孔巴西盘断裂轨迹和机理的数值研究：尺寸效应和布置的作用

IF 3.2 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-22 DOI: 10.1111/ffe.70030

Yu Fu, Dalang Tian, Guangjian Liu, Faquan Wu

{"title":"Numerical Study on the Fracture Trajectories and Mechanisms of Hole-Contained Brazilian Discs: The Role of Size Effects and Arrangements","authors":"Yu Fu, Dalang Tian, Guangjian Liu, Faquan Wu","doi":"10.1111/ffe.70030","DOIUrl":"https://doi.org/10.1111/ffe.70030","url":null,"abstract":"<div>\u0000 \u0000 <p>This study mostly investigates the effects of the sizes of a single hole and the arrangements of multiple holes on the cracking characteristics of rock-like materials (concrete) under compressive loading based on the extended Non-ordinary state-based peridynamics (NOSBPD) model. The radius sizes of pre-existing single holes overtly affect the fracture trajectories of Brazilian discs. The critical value of the radius of the pre-existing hole can be ascertained to identify the transition of fracture trajectories for single hole-contained Brazilian discs. The numbers and arrangements of pre-existing multiple holes overtly affect the fracture trajectories of Brazilian discs. The extended NOSBPD model can unfailingly predict the breakage trajectories of single and multiple contained holes Brazilian discs. The distribution characteristics of stress fields can analyze the fracture mechanism of flawed Brazilian discs. The stress concentration, the stress concentration transfer, and the stress concentration dissipation can clarify the initiation, growth, and stop of new cracks, respectively.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 10","pages":"4275-4289"},"PeriodicalIF":3.2,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012725","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 Pressure Decompression Model-Based Finite Element Approach for Efficient Dynamic Fracture Analysis in CO2 Pipelines 基于减压模型的CO2管道动态断裂有限元分析方法

IF 3.2 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-21 DOI: 10.1111/ffe.70039

Ying Zhen, Yuguang Cao, Fagen Li, Wenwen Li, Guiyi Wu

{"title":"A Pressure Decompression Model-Based Finite Element Approach for Efficient Dynamic Fracture Analysis in CO2 Pipelines","authors":"Ying Zhen, Yuguang Cao, Fagen Li, Wenwen Li, Guiyi Wu","doi":"10.1111/ffe.70039","DOIUrl":"https://doi.org/10.1111/ffe.70039","url":null,"abstract":"<div>\u0000 \u0000 <p>Running fractures represent the most catastrophic failure mode in CO<sub>2</sub> pipelines. Traditional engineering methods for crack prediction have proven non-conservative, while existing fluid–structure interaction (FSI) models suffer from computational inefficiency. This study proposes a novel finite element simulation method based on an innovative three-dimensional pressure decompression model that effectively characterizes CO<sub>2</sub>'s unique thermodynamic behavior during pipeline fracture. The methodology involves three phases: establishing a simplified yet physically accurate pressure decompression model through systematic analysis of experimental data; validating the approach through full-scale burst tests, demonstrating superior computational efficiency compared to conventional FSI methods while maintaining high accuracy; and conducting comparative analyses that reveal fundamental differences between CO<sub>2</sub> and natural gas pipeline fracture behavior, including larger crack-tip opening angles and more extensive plastic deformation in CO<sub>2</sub> pipelines. These findings advance understanding of CO<sub>2</sub> pipeline fracture mechanisms and provide an efficient computational framework for parametric studies essential for pipeline safety design.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 10","pages":"4245-4258"},"PeriodicalIF":3.2,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012971","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

Modeling of Crack Propagation in Ductile Materials Under Cyclic, Proportional and Non-Proportional Loading Conditions 循环、比例和非比例加载条件下延性材料裂纹扩展模型

IF 3.2 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-19 DOI: 10.1111/ffe.70029

Aris Tsakmakis, Alwin Gibb, Michael Vormwald

引用次数: 0

Effects of Excavation Process and External Disturbance on Fracture Behavior of Rock Around Tunnel: Large-Scale Laboratory Tests 开挖过程及外界扰动对隧道围岩破坏行为的影响：大型室内试验

IF 3.2 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-07-17 DOI: 10.1111/ffe.70034

Qingxiong Zhao, Kaihui Li, Jiezhen Chen, Ping Cao, Qibin Lin, Xiangyang Zhang

{"title":"Effects of Excavation Process and External Disturbance on Fracture Behavior of Rock Around Tunnel: Large-Scale Laboratory Tests","authors":"Qingxiong Zhao, Kaihui Li, Jiezhen Chen, Ping Cao, Qibin Lin, Xiangyang Zhang","doi":"10.1111/ffe.70034","DOIUrl":"https://doi.org/10.1111/ffe.70034","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, taking the deep-buried tunnel excavation as the background, the loading path for simulating excavation unloading and external disturbance was determined. A series of biaxial compression tests were conducted on large sandstone specimens containing single or double circular tunnels with different excavation advances. The results show that the stress adjustment required to fracture the surrounding rock gradually decreases as the tunnel's excavation proceeds. The presence of the preceding tunnel reduces the stress adjustment needed for crack initiation in the surrounding rock during the lagging tunnel excavation. In contrast to the lagging tunnel fracture process for twin-tunnel specimens, the V-shaped notched tunnel fracture for single-tunnel specimens starts at the tunnel entrance and gradually moves toward the tunnel face. The twin-tunnel specimen exhibits more concentrated surface strain and more extensive fracture propagation with more shear cracks than the single-tunnel specimen. Additionally, the sudden change in the deformation trend of the surrounding rock indicates the fracture occurrence. The deformation around the tunnel implies that the range of excavation-damaged zone in the surrounding rock is greater than the range of crack propagation.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 10","pages":"4228-4244"},"PeriodicalIF":3.2,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013033","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