Fatigue & Fracture of Engineering Materials & Structures最新文献_第5页

Analysis of Crack-Tip Field in Orthotropic Compact Tension Shear Specimens: The Role of Elastic Mode Mixity and T-Stress 正交各向异性致密拉剪试件裂纹尖端场分析：弹性模态混合和t应力的作用

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-25 DOI: 10.1111/ffe.14577

Pengfei Jin, Xianghao Duan, Ce Luo, Qi Guo, Zheng Liu, Xin Wang, Xu Chen

{"title":"Analysis of Crack-Tip Field in Orthotropic Compact Tension Shear Specimens: The Role of Elastic Mode Mixity and T-Stress","authors":"Pengfei Jin, Xianghao Duan, Ce Luo, Qi Guo, Zheng Liu, Xin Wang, Xu Chen","doi":"10.1111/ffe.14577","DOIUrl":"https://doi.org/10.1111/ffe.14577","url":null,"abstract":"<div>\u0000 \u0000 <p>The analysis of mixed-mode crack propagation mechanisms in anisotropic materials remains a pivotal research focus. Although the compact tension shear (CTS) test is a recommended laboratory method, the lack of solutions for anisotropic crack-tip field parameters hinders accurate assessment of stress states and deformations during crack propagation. To address this gap, this study conducted a systematic finite element analysis (FEA) to compute the elastic mode mixity and <i>T</i>-stress results. It is found that by adjusting the loading angle along with the initial crack length, CTS tests on orthotropic specimens can similarly achieve a broad spectrum of <i>M</i><sub><i>e</i></sub> at the crack-tip. Statistical analysis indicates that applying isotropic solutions to estimate orthotropic <i>T</i>-stress can lead to average errors of 234.1%. Subsequently, crack-tip fields were analyzed, with crack initiation angles predicted using the maximum tangential stress (MTS) criterion and plastic zone profiles determined based on Hill's yield criterion. Larger fracture process zones enhance <i>T</i>-stress correction effects on crack initiation angles, with positive <i>T</i> intensifying crack deflection, while negative <i>T</i> reduces it. Additionally, <i>T</i> also significantly affects the plastic zone's shape and size, with patterns varying according to material orthotropy. A detailed multiparameter characterization of crack-tip fields will enhance the use of the CTS test for assessing multiaxial strength and mixed-mode fracture mechanisms in anisotropic materials.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 4","pages":"1741-1757"},"PeriodicalIF":3.1,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581880","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

Enhancing Fracture Performance of Non-Conductive Composite Adhesively Bonded Joints With Magnetically Aligned MWCNT/Fe₃O₄ Hybrid Nanofillers 磁取向MWCNT/Fe₃O₄杂化纳米填料增强非导电复合粘结接头断裂性能

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-22 DOI: 10.1111/ffe.14567

Yousef Ghanbari, Amir Reza Fatolahi, Hadi Khoramishad

{"title":"Enhancing Fracture Performance of Non-Conductive Composite Adhesively Bonded Joints With Magnetically Aligned MWCNT/Fe₃O₄ Hybrid Nanofillers","authors":"Yousef Ghanbari, Amir Reza Fatolahi, Hadi Khoramishad","doi":"10.1111/ffe.14567","DOIUrl":"https://doi.org/10.1111/ffe.14567","url":null,"abstract":"<div>\u0000 \u0000 <p>The Mode-I fracture behavior of non-conductive composite adhesively bonded joints (ABJs) reinforced with multi-walled carbon nanotube/iron oxide (MWCNT/Fe₃O₄) hybrid nanofillers aligned in different directions was studied using double cantilever beam (DCB) tests. Fe₃O₄ nanoparticles were chemically coated onto MWCNTs to explore the practical potential of these produced magnetically controllable nanofillers in high-tech industries that require precise nanofiller alignment in specific directions. Nanofillers were aligned within the ABJ adhesive layer using a low magnetic field at 0°, 45°, and 90° relative to the crack growth path, verified by Raman spectroscopy. ABJs with 90° alignment exhibited the highest fracture energy, surpassing unreinforced and randomly dispersed specimens by 136% and 41%, respectively. In contrast, 0°-alignment showed the lowest fracture energy, while 45° alignment demonstrated intermediate performance. Cohesive zone modeling simulated the ABJ damage behavior, and the effects of nanofiller alignment on macro and microscale fracture mechanisms were assessed using optical and scanning electron microscopy.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 4","pages":"1667-1680"},"PeriodicalIF":3.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143582000","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

Influence of Low-Velocity Impact Damage on Residual Strength and Fatigue Behavior of GFRP Composites 低速冲击损伤对GFRP复合材料残余强度和疲劳性能的影响

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-22 DOI: 10.1111/ffe.14584

P. Karthick, P. M. Radhakrishnan, K. Ramajeyathilagam

{"title":"Influence of Low-Velocity Impact Damage on Residual Strength and Fatigue Behavior of GFRP Composites","authors":"P. Karthick, P. M. Radhakrishnan, K. Ramajeyathilagam","doi":"10.1111/ffe.14584","DOIUrl":"https://doi.org/10.1111/ffe.14584","url":null,"abstract":"<div>\u0000 \u0000 <p>Predicting the residual strength of structures subjected to low-velocity impact is one of the most difficult problems. Therefore, the residual static strength of the damaged specimens with 5- and 10-J impact energy was assessed by corresponding tension, compression, in-plane shear, bending tests, and residual fatigue life using tension–tension fatigue test for three stress levels at a stress ratio of 0.1. The reduction in strength is more for 10-J impact and found to be more than 50% for tensile and compressive, 40% for bending, and around 27% for shear loading compared to unimpacted specimens. Deterioration of fatigue stiffness, progression of cyclic creep strain, and fluctuations in hysteresis loop under cyclic loading have been reported. Furthermore, the fatigue life of impacted specimens has been predicted using analytical models, demonstrating strong concordance with the experimental stress-life curve. Moreover, the design fatigue life at varying reliability levels has been estimated by a statistical method.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 4","pages":"1681-1696"},"PeriodicalIF":3.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143582001","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

Exploring Damage and Penetration in Soft Armors Under Ballistic Impact Through a Novel and Efficient 3D Peridynamic Model 利用一种新颖高效的三维周动力学模型研究软装甲在弹道冲击下的损伤和侵彻

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-22 DOI: 10.1111/ffe.14580

Daud Ali Abdoh

引用次数: 0

Quantitative Review of Critical Plane Criteria and Stress Analysis Approaches for Multiaxial Fatigue of Welded Joints 焊接接头多轴疲劳临界平面准则和应力分析方法的定量评述

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-22 DOI: 10.1111/ffe.14571

Chin Tze Ng, Luca Susmel

{"title":"Quantitative Review of Critical Plane Criteria and Stress Analysis Approaches for Multiaxial Fatigue of Welded Joints","authors":"Chin Tze Ng, Luca Susmel","doi":"10.1111/ffe.14571","DOIUrl":"https://doi.org/10.1111/ffe.14571","url":null,"abstract":"<p>This quantitative review evaluates the effectiveness of stress-based critical plane criteria, specifically Findley's criterion, the approach due to Carpinteri–Spagnoli (CS), and the Modified Wöhler Curve Method (MWCM), in assessing fatigue strength in aluminum and steel welded joints subjected to constant amplitude (CA) and variable amplitude (VA) multiaxial loading. These criteria were analyzed alongside stress analysis approaches, including nominal stress (NS), hot-spot stress (HSS), effective notch stress (ENS), and the Theory of Critical Distances–Point Method (TCD PM). Results confirm that all criteria effectively estimate fatigue life for steel welded joints under CA loading, with MWCM combined with HSS proving most accurate. For aluminum joints, estimations showed greater conservatism and scatter, highlighting the need for further experimental data to improve accuracy. Experimentally calibrated constants significantly enhanced prediction reliability. Future research should refine these criteria for diverse aluminum grades and thicknesses, ensuring accurate estimations and robust alternatives to established codes.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 4","pages":"1393-1428"},"PeriodicalIF":3.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14571","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143582003","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

On the Relative Significance of Roughness, Printing Defects and Microstructure on the Fatigue Behavior of Electron Beam Melted Ti-6Al-4V 粗糙度、印刷缺陷和显微组织对电子束熔化Ti-6Al-4V疲劳行为的相对影响

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-21 DOI: 10.1111/ffe.14565

Marcos Antonio Bergant, Sergio Raúl Soria, Raúl Ignacio Bustos, Hugo Ramón Soul, Alejandro Andrés Yawny

{"title":"On the Relative Significance of Roughness, Printing Defects and Microstructure on the Fatigue Behavior of Electron Beam Melted Ti-6Al-4V","authors":"Marcos Antonio Bergant, Sergio Raúl Soria, Raúl Ignacio Bustos, Hugo Ramón Soul, Alejandro Andrés Yawny","doi":"10.1111/ffe.14565","DOIUrl":"https://doi.org/10.1111/ffe.14565","url":null,"abstract":"<div>\u0000 \u0000 <p>In contrast, but complementary to previous studies, this study examines the fatigue behavior in Ti-6Al-4V obtained by electron beam powder bed fusion, focusing on damage initiation sites, fatigue damage progression, and correlating these with fatigue life curves. Three material conditions were considered: as-built specimens with original surfaces after printing (AB), as-built specimens with a machined and polished surface (MP), and hot isostatic pressed specimens with a machined and polished surface (H). Fatigue fracture surface topography was analyzed using scanning electron microscopy and surface metrology microscopy. Different fatigue responses were observed, with crack initiation at surface roughness in AB, lack of fusion defects in MP, and phase facet formation in H specimens. Interaction between cracks and manufacturing defects was investigated. Kitagawa-Takahashi diagrams were applied successfully to AB and MP specimens. This study aims to enhance understanding of crack initiation and interaction mechanisms, improving life prediction capabilities through microstructure and defect-sensitive modeling.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 4","pages":"1647-1666"},"PeriodicalIF":3.1,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143582099","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

Experimental Research on Characterizing Elastic–Plastic Mixed-Mode Crack Extension Based on Ultimate Elastic Strain Energy Storage 基于极限弹性应变储能的弹塑性混模裂纹扩展特性试验研究

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-19 DOI: 10.1111/ffe.14572

Dongdong Chang, Tianfeng Fan, Zheng An, Xiaofa Yang, Yuxiang Lu, Xuanxuan Han, Wenqi Lin, Hong Zuo, Yingxuan Dong

{"title":"Experimental Research on Characterizing Elastic–Plastic Mixed-Mode Crack Extension Based on Ultimate Elastic Strain Energy Storage","authors":"Dongdong Chang, Tianfeng Fan, Zheng An, Xiaofa Yang, Yuxiang Lu, Xuanxuan Han, Wenqi Lin, Hong Zuo, Yingxuan Dong","doi":"10.1111/ffe.14572","DOIUrl":"https://doi.org/10.1111/ffe.14572","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper proposes a new insight into describing elastic–plastic mixed-mode crack extension based on ultimate elastic strain energy storage (ESES). The experimental fixture and specimen are specially designed and processed, and a series of experiments of mixed-mode I–II crack extension are conducted with different loading angles. It is found that the ultimate ESES invariably decreases as the crack length increases during mixed-mode crack extension with different loading angles, whereas the ultimate elastic strain energy storage release rate (ESESRR) is demonstrated to be stable in various loading angles. Moreover, the magnitude of the initial ultimate ESES can measure the difficulty of crack initiation, and its value is affected by loading conditions and specimen shape. Eventually, the theoretical and experimental values of the ultimate ESESRR fit well by excluding three nonnegligible physical factors. Therefore, the ultimate ESESRR provides a new perspective to characterize mixed-mode I–II crack extension in elastic–plastic materials.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 4","pages":"1630-1646"},"PeriodicalIF":3.1,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581952","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

Critical Analysis of the Systems Used to Reduce Self-Heating in Polymer Composites Subjected to Very High Cycle Fatigue Regimes 用于降低高周疲劳状态下聚合物复合材料自热系统的关键分析

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-16 DOI: 10.1111/ffe.14561

P. N. B. Reis, A. Katunin, J. Amraei

{"title":"Critical Analysis of the Systems Used to Reduce Self-Heating in Polymer Composites Subjected to Very High Cycle Fatigue Regimes","authors":"P. N. B. Reis, A. Katunin, J. Amraei","doi":"10.1111/ffe.14561","DOIUrl":"https://doi.org/10.1111/ffe.14561","url":null,"abstract":"<div>\u0000 \u0000 <p>The self-heating effect occurring during fatigue loading of polymer-matrix composites remains to be a significant problem due to its role in accelerating structural lifespan degradation. This is especially challenging when accelerated tests are applied at very high-frequency regimes since without cooling the tested structure is dominated by this phenomenon and rapidly reaching critical temperature value, and finally fails prematurely. This study reviews the approaches to reduce self-heating effect through the modification of materials systems to increase heat transfer and by applying specific load sequences or external cooling systems. The authors describe the possibility of hybridizing the reinforcement to obtain multifunctionality and an overall improvement in mechanical and thermal performance of the composites, as well as applying surface cooling techniques with the physical limitations of their applications. The results of this review demonstrate the practical possibilities of applying cooling approaches to reduce the negative impact of self-heating on structural residual life.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 4","pages":"1371-1392"},"PeriodicalIF":3.1,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581630","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

AI Safety for Physical Infrastructures: A Collaborative and Interdisciplinary Approach 物理基础设施的人工智能安全：协作和跨学科方法

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-16 DOI: 10.1111/ffe.14575

Fariborz Farahmand, Richard W. Neu

{"title":"AI Safety for Physical Infrastructures: A Collaborative and Interdisciplinary Approach","authors":"Fariborz Farahmand, Richard W. Neu","doi":"10.1111/ffe.14575","DOIUrl":"https://doi.org/10.1111/ffe.14575","url":null,"abstract":"<p>Where AI systems are increasingly and rapidly impacting engineering, science, and our daily lives, progress in AI safety for physical infrastructures is lagging. Most of the research and educational programs on AI safety do not consider that, in today's connected world, safety and security in physical infrastructures are increasingly entangled. This technical note sheds light, for the first time, on how computer science and engineering communities, for example, mechanical and civil, can collaborate on addressing AI safety issues in the physical infrastructures and the mutual benefits of this collaboration. We offer examples of how probabilistic views of engineers on safety can contribute to quantifying critical parameters such as “threshold” and “safety buffer” in the AI safety models, developed by the world-leading computer scientists. We also offer examples of how novel AI and machine learning tools, for example, <i>do</i>-operator, a mathematical operator for intervention (vs. conditioning); <i>do</i>-calculus, machinery of causal calculus; and physics-informed neural networks with a small number of samples can help fatigue and fracture research. We envision AI safety as a process, not an object, and contribute to realizing this vision by initiating a collaborative and interdisciplinary approach in establishing this process.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 4","pages":"1919-1928"},"PeriodicalIF":3.1,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14575","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581629","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 Physics-Guided Neural Network for Probabilistic Fatigue Life Prediction Under Multiple Overload Effects 基于物理导向的疲劳寿命概率预测神经网络

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-16 DOI: 10.1111/ffe.14557

Shan Jiang, Yingchun Zhang, Wei Zhang

{"title":"A Physics-Guided Neural Network for Probabilistic Fatigue Life Prediction Under Multiple Overload Effects","authors":"Shan Jiang, Yingchun Zhang, Wei Zhang","doi":"10.1111/ffe.14557","DOIUrl":"https://doi.org/10.1111/ffe.14557","url":null,"abstract":"<div>\u0000 \u0000 <p>A Physics-guided Neural Network (PgNN) is proposed to provide a robust probability distribution of fatigue life under arbitrary multiple overloads, which integrates the physical mechanism model (PMM) and neural network (NN). Notably, the proposed PgNNs are trained solely using data under constant amplitude loading scenarios. Firstly, a PMM is developed to predict fatigue life based on linear elastic fracture mechanics, considering crack closure. A data preprocessing approach informing PMM is presented, transforming arbitrary overload conditions into equivalent constant amplitude loading with stress ratio \u0000<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>R</mi>\u0000 <mo>=</mo>\u0000 <mn>0</mn>\u0000 </mrow>\u0000 <annotation>$$ mathrm{R}&#x0003D;0 $$</annotation>\u0000 </semantics></math>. Moreover, a back-propagation NN is constructed, where a loss function integrating the PMM and mean square error is designed. The PgNN framework encompasses the uncertainties associated with stress levels, material coefficients and equivalent initial flaw size. The fatigue data of aluminum alloy 7075-T6 and Al-Li alloy 2060 are used for model validation. The results affirm that the PgNN exhibits superior accuracy and robustness.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 4","pages":"1612-1629"},"PeriodicalIF":3.1,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581611","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