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

Study on Fracture Characteristics of Mode II Fractured Rocks Under Different Heat Treatments 不同热处理条件下II型裂隙岩石断裂特性研究

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-03-25 DOI: 10.1111/ffe.14630

Leijun Ma, Lei Zhou, Zheming Zhu, Haohan Wang, Xin Shui, Bang Liu

{"title":"Study on Fracture Characteristics of Mode II Fractured Rocks Under Different Heat Treatments","authors":"Leijun Ma, Lei Zhou, Zheming Zhu, Haohan Wang, Xin Shui, Bang Liu","doi":"10.1111/ffe.14630","DOIUrl":"https://doi.org/10.1111/ffe.14630","url":null,"abstract":"<div>\u0000 \u0000 <p>In vigorously developing geothermal projects, in order to improve mining efficiency, it is necessary to explore the mechanism of rock failure in high-temperature environments. This study conducted compression experiments on pure type II fractured rocks subjected to heat treatment at different temperatures. The relationships between fracture toughness, crack propagation velocity, and fracture energy with heat treatment temperature were explored. By comparing the paths and initiation angles of crack propagation before and after aggregation at different temperatures, it can be found that granite is more prone to intergranular fracture after high temperatures. According to the relationship between energy and crack propagation rate, it was found that crack propagation velocity cannot be used to characterize fracture energy. The strain amplitudes of rock were analyzed using DIC technology, and it was found that the maximum strain value of granite at peak time was positively correlated with temperature, with a larger variation amplitude.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 6","pages":"2633-2648"},"PeriodicalIF":3.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909608","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

The damage and deterioration effects of dry–wet cycles on impurity-bearing gypsum rock and a fractal damage constitutive model 干湿循环对含杂质石膏岩的损伤变质效应及分形损伤本构模型

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-03-22 DOI: 10.1111/ffe.14628

Xiao-meng Yin, Lu-nan Wang, Wan-li Liu

{"title":"The damage and deterioration effects of dry–wet cycles on impurity-bearing gypsum rock and a fractal damage constitutive model","authors":"Xiao-meng Yin, Lu-nan Wang, Wan-li Liu","doi":"10.1111/ffe.14628","DOIUrl":"https://doi.org/10.1111/ffe.14628","url":null,"abstract":"<div>\u0000 \u0000 <p>Uniaxial compression tests and scanning electron microscopy were utilized to investigate the mechanical deterioration and microstructural damage patterns of impurity-bearing gypsum samples affected by dry–wet cycles. The results show that as the number of cycles increases, the failure of axially compressed samples shifts from tensile-dominant to shear-dominant, and the uniaxial compressive strength (UCS) and elastic modulus decrease exponentially. Energy dissipation in loaded rock undergoes three stages of evolution prior to peak stress. The third evolution stage of samples subjected to cyclic processing appears to be prolonged relative to that of natural samples, suggesting that the brittleness attenuation of rock is caused by dry–wet cycles. Moreover, cycling-induced microstructural damage can be quantitatively characterized by the fractal dimension of defects, and the strong dependence of mechanical deterioration on microstructural damage was therefore elucidated in explicit functional forms. Additionally, a damage constitutive model with a microstructural damage variable was constructed. The responses of the UCS, strain, and brittleness of rock to dry–wet cycles are well characterized by the parameters of the model.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 6","pages":"2599-2617"},"PeriodicalIF":3.1,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909566","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

In Situ Study on Fracture Process of Sandstones With Internal Flaws Using X-Ray Microtomography 含内部缺陷砂岩断裂过程的x射线微层析成像原位研究

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-03-20 DOI: 10.1111/ffe.14627

Yulong Shao, Jingwei Yang, Junsu Leem, Hong Yin, Seyedahmad Mehrishal, Jae-Joon Song

引用次数: 0

Post-Maintenance Crack Size Consideration for Bayesian Analysis of Subcritical Crack Growth 亚临界裂纹扩展贝叶斯分析中维修后裂纹尺寸的考虑

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-03-18 DOI: 10.1111/ffe.14615

Hongseok Kim, Hyeok-Jun Kwon, Youngchan Kim, Dooyoul Lee

{"title":"Post-Maintenance Crack Size Consideration for Bayesian Analysis of Subcritical Crack Growth","authors":"Hongseok Kim, Hyeok-Jun Kwon, Youngchan Kim, Dooyoul Lee","doi":"10.1111/ffe.14615","DOIUrl":"https://doi.org/10.1111/ffe.14615","url":null,"abstract":"<div>\u0000 \u0000 <p>Post-maintenance crack size distribution is assumed to be the same as the initial crack size distribution for conventional structural reliability analysis (SRA). This may be true for replacement; however, other maintenance methods, including crack blending and repair welding, will likely have significantly different crack size distribution. Bayesian search theory was applied to estimate the initial crack size distribution, which is critical for the SRA of aircraft structures due to its high uncertainty. The basic idea is to formulate a likelihood function that filters unlikely long or too-short crack sizes. Both objective and subjective information were used to construct the likelihood function. The result shows that posterior crack size distribution after maintenance using the information of eddy current inspection likelihood function was comparable to field measurement data. Using the Bayesian search theory reduces the uncertainty in the crack size distribution after maintenance; thus, more accurate SRA can be conducted.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 6","pages":"2557-2569"},"PeriodicalIF":3.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909669","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 Analysis of the Relationship Between Kernel Average Misorientation and Cyclic Plasticity in Circular-Like Single-Edge Notches 圆形单边缺口核平均取向偏差与循环塑性关系的数值分析

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-03-18 DOI: 10.1111/ffe.14626

Zhanguang Zheng, Li Li, Changji Xie, Xiangyu Ruan, Jun Yang

{"title":"Numerical Analysis of the Relationship Between Kernel Average Misorientation and Cyclic Plasticity in Circular-Like Single-Edge Notches","authors":"Zhanguang Zheng, Li Li, Changji Xie, Xiangyu Ruan, Jun Yang","doi":"10.1111/ffe.14626","DOIUrl":"https://doi.org/10.1111/ffe.14626","url":null,"abstract":"<div>\u0000 \u0000 <p>This study constructs a kernel average misorientation (<i>KAM</i>) evolution model based on the crystal plasticity finite element (CPFE) model, simulating the cyclic deformation of circular-like single-edge notched (CL-SEN) specimens under variable strain amplitudes and mean strains. The relationship between <i>KAM</i> and cyclic plasticity (plastic strain amplitude and mean plastic strain) is analyzed. The results show that the CL-SEN does not affect the linear relationship between <i>KAM</i> and plastic strain amplitude. For the first time, a linear relationship between <i>KAM</i> and mean plastic strain is proposed, with the influence of strain amplitude on <i>KAM</i> being significantly greater than that of mean strain. Additionally, the distribution patterns of <i>KAM</i> and plastic strain are consistent, further confirming their close correlation. The findings enhance understanding of fatigue damage mechanisms and provide guidance for improving the fatigue performance of materials.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 6","pages":"2570-2585"},"PeriodicalIF":3.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909670","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

Progressive Failure Process of Sandstone Under Different Loading Conditions via Acoustic Emission Characteristics 基于声发射特征的不同加载条件下砂岩渐进破坏过程

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-03-14 DOI: 10.1111/ffe.14621

Juanxia Lyu, Caiyuan Fan, Shijie Li, Zhen Huang

{"title":"Progressive Failure Process of Sandstone Under Different Loading Conditions via Acoustic Emission Characteristics","authors":"Juanxia Lyu, Caiyuan Fan, Shijie Li, Zhen Huang","doi":"10.1111/ffe.14621","DOIUrl":"https://doi.org/10.1111/ffe.14621","url":null,"abstract":"<div>\u0000 \u0000 <p>This study investigates the acoustic emission (AE) characteristics during sandstone failure under three typical mechanical tests:direct shear test (DST), Brazilian splitting test (BST), and uniaxial compression test (UCT). Results show a significant difference in the log-linear slope between AE count and amplitude across different tests, reflecting variations in the scaling distribution characteristics of AE signals. Peak frequency distributions vary, with DST predominantly in the 150- to 200-kHz range, BST in the 0- to 100-kHz range, and UCT showing a mixed distribution. RA (rise time/amplitude) and AF (counts/duration) analysis classified crack types, indicating shear-type signals dominate in DST, tensile-type signals in BST, and a slight dominance of tensile cracks in UCT. Shear cracks generally exhibit higher AE energy, especially in high-energy ranges (10–1000 mV*mS), whereas tensile cracks dominate the low-energy range (0.1–1 mV*mS). These findings advance the understanding of rock failure mechanisms and AE signal behavior.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 6","pages":"2540-2556"},"PeriodicalIF":3.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909309","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 Fatigue Damage Accumulation Model Considering Load Interaction and Material Parameters Under Variable Load Conditions 变载荷条件下考虑载荷相互作用和材料参数的疲劳损伤累积模型

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-03-12 DOI: 10.1111/ffe.14624

Xinyu Ge, Chao Zhang, Guiyi Liu, Shuai Xu, Jing Zhang, Yangbiao Wu

引用次数: 0

Influence of Specimen Thickness on Fatigue Crack Growth at High Temperature Under Mixed-Mode Loading 混合模式载荷下试样厚度对高温疲劳裂纹扩展的影响

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-03-03 DOI: 10.1111/ffe.14587

Chun Hu, Xin Huang, Shaolin Li, Hongyu Qi, Xiaoguang Yang, Duoqi Shi

{"title":"Influence of Specimen Thickness on Fatigue Crack Growth at High Temperature Under Mixed-Mode Loading","authors":"Chun Hu, Xin Huang, Shaolin Li, Hongyu Qi, Xiaoguang Yang, Duoqi Shi","doi":"10.1111/ffe.14587","DOIUrl":"https://doi.org/10.1111/ffe.14587","url":null,"abstract":"<div>\u0000 \u0000 <p>The high-temperature components of aeroengines operate under high-temperature and fatigue-loading conditions, resulting in complex crack-related issues. This study presents fatigue crack growth (FCG) experiments under mixed-mode loading performed on compact tension shear specimens fabricated from a nickel-based superalloy, tested at 550°C under varying thicknesses. The influence of specimen thickness on FCG behavior under mixed-mode loading was analyzed through experimental investigations and finite element method simulations. The expanded FCG model, incorporating thickness effects based on closure theory, enables more precise predictions of crack growth rates under mixed-mode loading conditions. Additionally, the FCG d<i>a</i>/d<i>N</i> − Δ<i>K</i> curve for nickel-based superalloys exhibits a vertical shift with varying specimen thickness, while the FCG angle under mixed-mode loading remains unaffected by thickness. These findings provide valuable insights for improving damage tolerance design in aircraft engines.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 6","pages":"2506-2517"},"PeriodicalIF":3.1,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909004","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 and Numerical Investigation on Fatigue Limit Improvement of Laser Shock Peening on Airfoil Specimens Subjected to Foreign Object Damage 外来物损伤下翼型激光冲击强化提高疲劳极限的实验与数值研究

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-02-27 DOI: 10.1111/ffe.14619

Jianxing Mao, Weixin Lu, Dianyin Hu, Jinchao Pan, Wulin Si, Jianxin Liu, Xiaoming Shan, Shikun Zou, Yang Gao, Liucheng Zhou, Rongqiao Wang

{"title":"Experimental and Numerical Investigation on Fatigue Limit Improvement of Laser Shock Peening on Airfoil Specimens Subjected to Foreign Object Damage","authors":"Jianxing Mao, Weixin Lu, Dianyin Hu, Jinchao Pan, Wulin Si, Jianxin Liu, Xiaoming Shan, Shikun Zou, Yang Gao, Liucheng Zhou, Rongqiao Wang","doi":"10.1111/ffe.14619","DOIUrl":"https://doi.org/10.1111/ffe.14619","url":null,"abstract":"<div>\u0000 \u0000 <p>Foreign object damage (FOD) has been a critical issue for fan and compressor blades in aero-engines due to the cause of high cycle fatigue (HCF) failure. To address it, anti-fatigue design is imperative. In this paper, laser shock peening (LSP) was employed to improve fatigue resistance of the airfoil specimens with FOD. Systematic experimental investigations were carried out to determine the notch geometry, residual stress, and cumulative plastic damage are the dominant factors in improving HCF resistance. Compared with the as-received specimens, LSPed specimens exhibited fatigue limit increase ranging from 6.4% to 47.4%, which was affected by the scatter of the notch geometry. Therefore, detailed finite element analyses were conducted to determine the distributions of residual stress and plastic strain of individual notches and quantify the superimposed effects of FOD and LSP on fatigue limit. Accordingly, a modified Kitagawa–Takahashi diagram was proposed, with a maximum error within 10% for different depths of notches.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 6","pages":"2477-2494"},"PeriodicalIF":3.1,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909616","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

Evaluation of Small Fatigue Crack Growth Rates in HIP FGH96 Superalloy Under Microstructural Influences 组织影响下HIP - FGH96高温合金疲劳裂纹扩展速率的评价

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-02-27 DOI: 10.1111/ffe.14620

Rui-Guo Yan, Li-Na Zhu, An Liu, Xi-Shu Wang

{"title":"Evaluation of Small Fatigue Crack Growth Rates in HIP FGH96 Superalloy Under Microstructural Influences","authors":"Rui-Guo Yan, Li-Na Zhu, An Liu, Xi-Shu Wang","doi":"10.1111/ffe.14620","DOIUrl":"https://doi.org/10.1111/ffe.14620","url":null,"abstract":"<div>\u0000 \u0000 <p>The effects of different evaluation methods and microstructural characteristics on the surface small fatigue crack growth rate of HIP FGH96 superalloy were quantitatively investigated using SEM in situ and other testing technologies. The results indicate that the effect of projected length <i>a</i><sub>1</sub> and physical length <i>a</i><sub>2</sub> on the small fatigue crack growth rate can be ignored, even if there are some deflection angles in small crack growth path. However, clear distinctions emerge when evaluating the small fatigue crack growth rate near the crack growth threshold under mixed-mode (Mode I/II) conditions, where the influence is quantitatively assessed using the maximum tangential stress criterion. Furthermore, differences between various evaluation methods of small fatigue crack growth rates and several important damage tolerance design parameters, such as Δ<i>K</i><sub>th</sub>, <i>a</i><sub>eq</sub>, or <i>σ</i><sub>w</sub>, were quantitatively predicted based on Weibull distribution analysis.</p>\u0000 </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 6","pages":"2495-2505"},"PeriodicalIF":3.1,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909617","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