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

Comparative assessment of Ti-6Al-4 V titanium alloy fatigue life improvement by vibratory peening, shot peening, and vibratory finishing 通过振动强化、喷丸强化和振动光饰提高 Ti-6Al-4 V 钛合金疲劳寿命的比较评估

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-25 DOI: 10.1111/ffe.14447

Maxime Paques, Apratim Chakraborty, Benoit Changeux, Hong Yan Miao, Waqas Muhammad, Sylvain Turenne, Kaan Inal, Etienne Martin

{"title":"Comparative assessment of Ti-6Al-4 V titanium alloy fatigue life improvement by vibratory peening, shot peening, and vibratory finishing","authors":"Maxime Paques, Apratim Chakraborty, Benoit Changeux, Hong Yan Miao, Waqas Muhammad, Sylvain Turenne, Kaan Inal, Etienne Martin","doi":"10.1111/ffe.14447","DOIUrl":"https://doi.org/10.1111/ffe.14447","url":null,"abstract":"The effects of vibratory peening (VP), shot peening (SP), and SP followed by vibratory finishing (SPVF) on the surface and fatigue properties of Ti-6Al-4 V were compared to conventional low-stress grinding (LSG). VP processing produced seven times smoother surface finish than SP and 66% deeper compressive residual stresses (CRS) but with 12% lower magnitudes. SPVF produced optimal surface properties with a perfectly flat surface and CRS-like SP. All three mechanical surface treatments generated similar fatigue life improvements (108–122%) over LSG when the cyclic stress was below the yield stress. Above the yield stress, most of the CRS relaxed during the first cycle in VP specimens, resulting in up to 97% fatigue life improvement over LSG. The CRS relaxed more gradually in SP specimens leading to larger (up to 239%) fatigue life improvement. This shows the need to amplify CRS magnitudes produced in VP to maximize fatigue life improvement.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"47 12","pages":"4588-4606"},"PeriodicalIF":3.1,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665160","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 infill pattern and layer height on surface characteristics and fatigue behavior of FFF-printed PEEK 填充图案和层高对 FFF 印刷 PEEK 表面特性和疲劳行为的影响

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-24 DOI: 10.1111/ffe.14450

Alessandro Greco, Alessandro De Luca, Salvatore Gerbino, Giuseppe Lamanna, Raffaele Sepe

{"title":"Influence of infill pattern and layer height on surface characteristics and fatigue behavior of FFF-printed PEEK","authors":"Alessandro Greco, Alessandro De Luca, Salvatore Gerbino, Giuseppe Lamanna, Raffaele Sepe","doi":"10.1111/ffe.14450","DOIUrl":"https://doi.org/10.1111/ffe.14450","url":null,"abstract":"PolyEther Ether Ketone (PEEK) is a leading thermoplastic biomaterial renowned for its exceptional overall properties and suitability for processing via Fused Filament Fabrication (FFF) Additive Manufacturing (AM). Despite its widespread use in industries, its fatigue behavior remains a critically underexplored aspect. This study aims to investigate the fatigue behavior of FFF-produced PEEK, considering variations in infill pattern (triangular or rectilinear) and layer height (0.15 mm or 0.25 mm). Fatigue tests revealed a significant influence of the infill pattern on fatigue behavior, with the rectilinear pattern outperforming the triangular one. Layer height had a negligible effect when paired with rectilinear infill. Specimens with rectilinear patterns exhibited superior fatigue performance, achieving infinite fatigue life at maximum applied stress around 70% of ultimate tensile stress. Surface roughness assessment and fracture surface analysis at scanning electron microscope enhanced the interpretation of the results. This pioneering study lays the groundwork for future research in design for AM.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"47 12","pages":"4741-4754"},"PeriodicalIF":3.1,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14450","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665120","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

Fractal fracture characteristics and acoustic emission analysis of soft rock-coal combinations under low-frequency disturbance 低频扰动下软岩-煤组合的分形断裂特征和声发射分析

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-23 DOI: 10.1111/ffe.14448

Jianlong Wang, Dong Wang, Yujing Jiang, Hengjie Luan, Jiankang Liu, Bin Liang

引用次数: 0

Tuning residual stresses in welded structures by exploiting bio-inspired suture interfaces 利用生物启发缝合界面调节焊接结构中的残余应力

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-22 DOI: 10.1111/ffe.14445

Paolo Ferro, Keke Tang, Filippo Berto, Enrico Salvati

{"title":"Tuning residual stresses in welded structures by exploiting bio-inspired suture interfaces","authors":"Paolo Ferro, Keke Tang, Filippo Berto, Enrico Salvati","doi":"10.1111/ffe.14445","DOIUrl":"https://doi.org/10.1111/ffe.14445","url":null,"abstract":"Nature offers a valuable source of inspiration when designing optimized structures. For instance, when two or more shells are joined during growth processes, Nature prefers to exploit interlocking paradigms to enhance the strength of the bond—cranial sutures are one example. Mimicking this distinctive characteristic when welding thin metallic elements may offer some structural benefits. The present study theoretically investigates the possibility of mitigating the detrimental tensile residual stress that always originated by welding processes, by exploiting Computational Welding Mechanics. Specifically, two plates joined by laser welding following sinusoidal paths (i.e., wave-like), alongside a linear one, will be studied and compared. Thanks to the distinctive temporal and spatial heat distributions of sinusoidal welding, both welding stress and strain develop in dissimilar ways compared with linear path welding—this is reflected to the resulting weldment distortion too. The results show that geometrically optimized sinusoidal welding can effectively reduce residual stress magnitudes compared with the linear configuration counterpart. The implications of these findings are of particular interest when dealing with the structural performance of welded structures, especially in fatigue contexts.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"47 12","pages":"4560-4572"},"PeriodicalIF":3.1,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14445","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665010","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

Effects of the manufacturing process on the flexural properties of EBMed lattice structures 制造工艺对 EBMed 晶格结构弯曲特性的影响

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-19 DOI: 10.1111/ffe.14449

Costanzo Bellini, Rosario Borrelli, Vittorio Di Cocco, Stefania Franchitti, Francesco Iacoviello, Larisa Patricia Mocanu, Luca Sorrentino

{"title":"Effects of the manufacturing process on the flexural properties of EBMed lattice structures","authors":"Costanzo Bellini, Rosario Borrelli, Vittorio Di Cocco, Stefania Franchitti, Francesco Iacoviello, Larisa Patricia Mocanu, Luca Sorrentino","doi":"10.1111/ffe.14449","DOIUrl":"https://doi.org/10.1111/ffe.14449","url":null,"abstract":"Lattice structures are very interesting since they present good mechanical properties coupled with lightness. Today, the maturity reached by additive manufacturing technologies allows the production of such structures. However, the mechanical properties of the constituting material can be affected by the process itself, because of the particular geometry. In fact, in a previous work, the mechanical characteristics of the bulk-printed material were used for modelling the bending behavior of lattice-cored specimens made of Ti6Al4V and produced through electron beam melting (EBM) process, but a certain discrepancy with experimental results was found. Therefore, in this work, a procedure was proposed to determine the mechanical properties of the material the lattice specimen is made of, in order to reduce the gap between the numerical and the experimental results. By considering the redetermined yield strength, such mismatch was reduced. Moreover, the metallographic analysis of the material found that the α laths of the α + β microstructure, typical of the studied alloy, were thinner than those of bulk specimens, and the presence of α′ martensite was discovered too. The fracture surface analysis determined a ductile failure mode for the lattice core while a fragile mode for the skins.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"47 12","pages":"4729-4740"},"PeriodicalIF":3.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664994","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 influence of slit pipe wall thickness on the rock breaking effect of slit charge explosion 狭缝管壁厚对狭缝装药爆炸破岩效果的影响研究

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-19 DOI: 10.1111/ffe.14443

Jianguo Wang, Zeqing Zhou, Jun Ma, Xianglong Li

{"title":"Study on the influence of slit pipe wall thickness on the rock breaking effect of slit charge explosion","authors":"Jianguo Wang, Zeqing Zhou, Jun Ma, Xianglong Li","doi":"10.1111/ffe.14443","DOIUrl":"https://doi.org/10.1111/ffe.14443","url":null,"abstract":"In this study, the influence of slit pipe wall thickness on shaped charge blasting efficiency was investigated. The influence of different slit pipe wall thicknesses on the dynamic behavior of slotted charge blasting was analyzed by a combination of experimental observations and numerical simulations. Polymethyl methacrylate (PMMA) was used as a rock simulation material to prepare slit pipes with different slit pipe wall thicknesses (0.5, 1.0, and 1.5 mm). A dynamic caustics system is used to capture the crack propagation process. ANSYS/LS-DYNA was used for the numerical simulation analysis. The experimental results show that there is a positive correlation between the slit pipe wall thickness and the crack propagation length, velocity, and dynamic stress intensity factor. With increasing slit pipe wall thickness, the directional propagation and energy concentration ability of cracks are significantly improved, but an increase in the slit pipe wall thickness will also promote the propagation of secondary cracks. In addition, the numerical simulation results support the experimental observations and reveal the existence of an optimal slit pipe wall thickness that can maximize the blasting efficiency while maintaining structural integrity. This study not only deepens the understanding of the physical laws of the blasting process but also provides a practical reference for the optimal design of slotted charges in engineering applications.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"47 12","pages":"4545-4559"},"PeriodicalIF":3.1,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664993","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

Multidimensional complex signal processing and feature extraction for fatigue testing data 疲劳测试数据的多维复杂信号处理和特征提取

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-16 DOI: 10.1111/ffe.14444

Weihao Liu, Lei Gan, Hao Wu, Zheng Zhong

引用次数: 0

Effect of chemical etching time on the fatigue behavior of Ti-6Al-4V produced by laser powder bed fusion 化学蚀刻时间对激光粉末床熔融制备的 Ti-6Al-4V 的疲劳行为的影响

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-16 DOI: 10.1111/ffe.14392

David Melle, Etienne Pessard, Franck Morel, Daniel Bellett, Frédéric Adamski, Rene Billardon

{"title":"Effect of chemical etching time on the fatigue behavior of Ti-6Al-4V produced by laser powder bed fusion","authors":"David Melle, Etienne Pessard, Franck Morel, Daniel Bellett, Frédéric Adamski, Rene Billardon","doi":"10.1111/ffe.14392","DOIUrl":"https://doi.org/10.1111/ffe.14392","url":null,"abstract":"This study focuses on the evolution of the fatigue strength of Laser Powder Bed Fusion (L-PBF) produced Ti-6Al-4V as a function of the chemical etching finishing process. The aim is to identify the critical fatigue crack initiation mechanisms and the transitions between them in terms of the evolution of the surface micro-geometry. This is done using three different geometries and six different surface states. The evolution of the crack initiation mechanisms is then used to explain the evolutions of the fatigue strength and the fatigue scatter. Chemical etching affects the fatigue life via a polishing effect, which directly influences both the finite and the high cycle fatigue domains. It is shown that chemical etching makes it possible to obtain fatigue strengths that are almost similar to those of the machined surface. However, it is also observed that etching cannot fully counteract the effects of large surface cavities caused by surface connected porosities.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"47 12","pages":"4498-4515"},"PeriodicalIF":3.1,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14392","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665062","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

Rate-dependent mechanical properties and acoustic emission characteristic of recycled aggregate concrete under four-point bending 四点弯曲下再生骨料混凝土随速率变化的力学性能和声发射特性

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-16 DOI: 10.1111/ffe.14433

Gang Ma, Lixing Wang, Kai Yang, Yuan Zhao, Zhuo Tang

{"title":"Rate-dependent mechanical properties and acoustic emission characteristic of recycled aggregate concrete under four-point bending","authors":"Gang Ma, Lixing Wang, Kai Yang, Yuan Zhao, Zhuo Tang","doi":"10.1111/ffe.14433","DOIUrl":"https://doi.org/10.1111/ffe.14433","url":null,"abstract":"The application of recycled aggregate is crucial for waste concrete recycling, while the loading rate significantly influences the fracture behavior of recycled aggregate concrete. Herein, we investigate the effect of loading rate on the flexural and fracture behaviors of recycled aggregate concrete, along with associated acoustic emission characteristics. Results show that the flexural strength and energy absorption capacity maximum increase by 15.18% and 38.39%, respectively, as the loading rate rises. As the loading rate increases from 0.05 to 1 mm/min, peak frequency is primarily clustered in 0 ~ 75 kHz and 75 ~ 225 kHz and tends to be dense, while the b value decreases by 19.28%, 23.30%, and 30.17%, respectively. Additionally, the proportion of shear failure also decreases, which relates to the high energy release rate. Further, the multifractal spectrum α − f(α) resembles a quadratic distribution, with both multifractal intensity ∆f and spectrum width ∆α showing a downward trend as the loading rate rises.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"47 12","pages":"4528-4544"},"PeriodicalIF":3.1,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665087","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

Fretting fatigue fracture behavior of Ti6Al4V dovetail joint specimens at 500°C treated with nanosecond stacked femtosecond laser impact strengthening 500°C 下经纳秒堆叠飞秒激光冲击强化处理的 Ti6Al4V 燕尾接头试样的摩擦疲劳断裂行为

IF 3.1 2区材料科学

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-09-10 DOI: 10.1111/ffe.14440

Fan Niu, Tai-Li Chen, Zhi-Guo Wang, Wei Wang, Xiu-Fang Gong, Xiu-Yang Fang, Jing Ni, Zhen-Bing Cai

{"title":"Fretting fatigue fracture behavior of Ti6Al4V dovetail joint specimens at 500°C treated with nanosecond stacked femtosecond laser impact strengthening","authors":"Fan Niu, Tai-Li Chen, Zhi-Guo Wang, Wei Wang, Xiu-Fang Gong, Xiu-Yang Fang, Jing Ni, Zhen-Bing Cai","doi":"10.1111/ffe.14440","DOIUrl":"https://doi.org/10.1111/ffe.14440","url":null,"abstract":"The high-temperature fretting fatigue damage characteristics of dovetail specimens strengthened by nanosecond laser (NL) and nanosecond combined femtosecond laser (F-NL) were investigated. The results show that the fretting fatigue life of the NL strengthened sample (NL sample) is improved by 211.2% compared to the base metal samples (BM sample). The lifetime of the nanosecond combined femtosecond strengthened sample (F-NL sample) was increased by 319.6%. It was attributed to the strengthening introducing hardened layers, residual compressive stress field, and high density of dislocations. The combined strengthening process reduces the surface roughness of the NL strengthened surfaces, while the strengthening influence layer is further increased. The fracture morphology shows that the crack source of the strengthened specimen has changed from multi-source sprouting to single-source sprouting, and the crack source sprouted on the subsurface. The fatigue strip morphology similarly confirms that a reduction in the crack propagation rate occurs.","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"47 12","pages":"4478-4497"},"PeriodicalIF":3.1,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664762","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