Article
Engineering, Biomedical
Sydney Hitchon, William Anderson, Jaques S. Milner, Gregory Hong, Todor Ivanov, Ryan Willing, David Holdsworth
Summary: This study compared the mechanical behaviors of titanium cylindrical gyroid structures with different porosities. Both experimental and simulation results showed consistent relationships between porosity and apparent modulus of elasticity. Calibration of the fatigue strength coefficient improved the prediction accuracy of fatigue life, but discrepancies between prediction and experiment remained, which could be attributed to difficulties in defining failure and minor differences in porosities.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ying Sun, Wenchao Hu, Song Zhang, Yanjin Lu, Jie Wang, Guangcai Ma, Jinxin Lin, Saman Hosseinkhani, Jia Ma, Qiang Wang
Summary: In this study, the fatigue behavior of the porous biomaterial Ti6Al4V-6Cu, produced by selective laser melting (SLM) in air and in 0.9 wt% NaCl solution, was experimentally investigated. It was found that crack initiation is accelerated in a state of high stress and crack propagation is accelerated in a solution containing 0.9 wt% NaCl. Moreover, the porous Ti6Al4V-6Cu sample has a higher fatigue strength and longer fatigue life compared to the Ti6Al4V sample.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zhongwei Xu, An Liu, Xishu Wang
Summary: This study investigates the performance differences between rolled and selective laser melted (SLM) Ti6Al4V alloys commonly used for orthopedic implants. The results show that the fatigue performance of SLM Ti6Al4V alloy is influenced by the building direction, with certain directions exhibiting excellent crack propagation resistance. Based on these findings, it can be expected that SLM components in different building directions will have varying fatigue performances.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Qinghua Lu, Yangling Ou, Peilei Zhang, Hua Yan
Summary: The SiC/AlSi10Mg composites were created using selective laser melting, and the impacts of process parameters on the density, microstructure, tensile characteristics, and fatigue properties of the composites were investigated. The results showed that the density of the composites was closely related to the laser energy density. The addition of SiC reinforcement significantly improved the fatigue resistance of the materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Thermodynamics
Z. Kazemi, M. Soleimani, H. Rokhgireh, A. Nayebi
Summary: In this study, the selective laser melting method (SLM) was simulated by finite element method (FEM) to manufacture a sample of 316 stainless steel. The temperature variation as a function of time and coordinates was obtained, along with the determination of the melting pool and the creation of keyholes at the end of each track. The obtained temperature distribution will be used to characterize the mechanical properties of the manufactured sample.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Nanoscience & Nanotechnology
L. X. Meng, H. J. Yang, D. D. Ben, H. B. Ji, D. L. Lian, D. C. Ren, Y. Li, T. S. Bai, Y. S. Cai, J. Chen, J. L. Yi, L. Wang, J. B. Yang, Z. F. Zhang
Summary: By changing the processing parameters of SLM, the microstructure and porosity of Ti6Al4V alloy can be influenced, thus affecting its tensile properties. Samples with high porosity result in stochastic ultimate tensile strength and stably low elongation, while samples with low porosity exhibit stable high ultimate tensile strength.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Engineering, Mechanical
Franco Concli, Riccardo Gerosa, Davide Panzeri, Lorenzo Fraccaroli
Summary: This work investigated the low-cycle fatigue and high-cycle fatigue behaviors of selective laser melted AISI 316L and AlSi10Mg. The results revealed that crack nucleation mainly occurs close to the surface due to poor surface quality and presence of near-surface defects. The analysis of fracture surfaces confirmed the ductile behavior of the investigated alloys with the presence of micro-dimples.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Materials Science, Multidisciplinary
Biliang Yuan, Chuanqiang Li, Yong Dong, Yang Yang, Peng Zhang, Zhengrong Zhang
Summary: The as-printed Al0.3CoCrFeNiCu high-entropy alloy (HEA) was successfully fabricated using selective laser melting (SLM) technology. The SLM-processed HEA exhibited a simple disordered face centered cubic solid solution with excellent mechanical properties. However, the presence of defects in the SLM alloy limits its application.
MATERIALS & DESIGN
(2022)
Article
Nanoscience & Nanotechnology
W. B. Li, J. C. Pang, H. Zhang, S. X. Li, Z. F. Zhang
Summary: The study conducted high-cycle fatigue tests on selective laser melted Inconel 718 superalloy at different temperatures, revealing a shift in fatigue damage mechanisms at elevated temperatures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Review
Materials Science, Multidisciplinary
Kun Li, Chen Ji, Shengwen Bai, Bin Jiang, Fusheng Pan
Summary: This paper discusses the defect formation mechanisms during the SLM process and summarizes characteristics in terms of mechanical properties, oxidation and corrosion resistance of magnesium alloys. Optimization schemes from both macro and micro perspectives are reviewed, as well as the effects of alloying elements, composite reinforcement, and post-treatment on the microstructure and properties of SLMed magnesium alloys. Finally, future application development prospects are envisaged based on the comprehensive review.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
T. Wegener, F. Brenne, A. Fischer, T. Moeller, C. Hauck, S. Auernhammer, T. Niendorf
Summary: Specimens made from pre-alloyed Invar powder were fabricated by selective laser melting and stress-relief heat treated. The fabricated parts showed a relative density of 99.6% and exhibited a bimodal microstructure with uniform hardness distribution. The material demonstrated highly reproducible fatigue behavior and high damage tolerance due to its high ductility.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Hailong Liao, Junjie Zhu, Shijie Chang, Gang Xue, Jingxi Pang, Haihong Zhu
Summary: Selective laser melting (SLM) is utilized to fabricate lunar regolith-AlSi10Mg composite successfully, with various metallurgical reactions and re-solidification observed. Specific parameters led to higher relative density and lunar regolith content, resulting in improved sample quality and compressive properties.
Article
Materials Science, Multidisciplinary
Unai Segurajauregi, Adrian Alvarez-Vazquez, Miguel Muniz-Calvente, Iker Urresti, Haydee Naveiras
Summary: This study investigates the impact of manufacturing speed and porosity on the fatigue behavior of a Ti-6Al-4V alloy, finding that the influence of laser velocity on fatigue performance is minor. Additionally, other factors such as roughness or surface defects from manufacturing conditions are identified as significant contributors to crack initiation and premature fatigue failure.
Article
Engineering, Mechanical
Chong-Ming Jiang, Jeng-Rong Ho, Pi-Cheng Tung, Chih-Kuang Lin
Summary: This study investigates the fatigue crack growth (FCG) behavior of selectively laser-melted AISI 420 martensitic stainless steel in different directions, considering the influence of tempering treatment. The results show that the crack growth rate (FCGR) is lower in the parallel direction than in the perpendicular direction, indicating an anisotropic FCG behavior. Tempering treatment moderately reduces the anisotropy of FCG behavior.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Chemistry, Physical
J. Karimi, M. Antonov, L. Kollo, K. G. Prashanth
Summary: This study aimed to enhance the surface quality and mechanical properties of a Ti6Al4V alloy manufactured using selective laser melting (SLM) by applying laser remelting. The research found that increasing the number of remelting steps can improve fatigue strength, strength, and wear resistance of the parts significantly.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Mechanics
Dario Maggiolo, Francesco Picano, Filippo Zanini, Simone Carmignato, Massimo Guarnieri, Srdjan Sasic, Henrik Strom
JOURNAL OF FLUID MECHANICS
(2020)
Article
Medicine, General & Internal
Giulia Brunello, Lisa Biasetto, Hamada Elsayed, Elia Sbettega, Chiara Gardin, Anna Scanu, Simone Carmignato, Barbara Zavan, Stefano Sivolella
JOURNAL OF CLINICAL MEDICINE
(2020)
Article
Engineering, Industrial
S. Carmignato, L. De Chiffre, H. Bosse, R. K. Leach, A. Balsamo, W. T. Estler
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2020)
Article
Nanoscience & Nanotechnology
Hamada Elsayed, Nejc Novak, Matej Vesenjak, Filippo Zanini, Simone Carmignato, Lisa Biasetto
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Engineering, Manufacturing
Laura Cordova, Ton Bor, Marc de Smit, Simone Carmignato, Monica Campos, Tiedo Tinga
ADDITIVE MANUFACTURING
(2020)
Article
Engineering, Manufacturing
S. Khademzadeh, F. Zanini, J. Rocco, K. Brunelli, P. F. Bariani, S. Carmignato
CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY
(2020)
Article
Engineering, Chemical
Meisam Farzaneh, Henrik Strom, Filippo Zanini, Simone Carmignato, Srdjan Sasic, Dario Maggiolo
Summary: The study presents pore-scale simulations of two-phase flows in a reconstructed fibrous porous layer, quantitatively analyzing the dynamics and identifying dominant fluid structures governing mass transport. The significant variations in the microscopic morphology of the fibrous layer have important effects on pore invasion dynamics. These results are significant for the optimal design of face masks to mitigate the current COVID-19 pandemic.
TRANSPORT IN POROUS MEDIA
(2021)
Article
Chemistry, Physical
Roberto Jimenez-Pacheco, Sinue Ontiveros, Jose A. Yague-Fabra, Filippo Zanini, Simone Carmignato, Jose Antonio Albajez
Article
Engineering, Manufacturing
Mandana Moshiri, Dario Loaldi, Filippo Zanini, Damiano Sgaravato, Simone Carmignato, Guido Tosello
Summary: This study analyzed the possibilities and limitations of metal additive manufacturing in plastic injection molding tool applications, showing the potential to limit post-processes and the opportunities for insert production. The results demonstrated that the surface texture of the built cavity with MAM was comparable to that of electrical discharge machining, achieving a replication fidelity higher than 95% in plastic injection molded samples.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Engineering, Manufacturing
Markus Baier, Mirko Sinico, Ann Witvrouw, Wim Dewulf, Simone Carmignato
Summary: This study introduces a novel method for tomographic non-destructive analysis of LPBF channels and bores, aiming to derive key parameters such as sag and dross effects. The methodology, utilizing polar-transformed profiles from X-ray CT data, enables accurate evaluation of the geometry of internal features in metal components.
ADDITIVE MANUFACTURING
(2021)
Article
Chemistry, Multidisciplinary
Christopher G. Klingaa, Filippo Zanini, Sankhya Mohanty, Simone Carmignato, Jesper H. Hattel
Summary: This study conducted a qualitative analysis of the surface texture of AlSi10Mg channels using X-ray computed tomography and found profile parameters that can be used for characterizing surface texture variations. Additionally, a method for predicting the equivalent diameter of unobstructed cross-sectional area and an empirical model for predicting roughness and internal geometry were presented.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Manufacturing
Nejc Novak, Lisa Biasetto, Pietro Rebesan, Filippo Zanini, Simone Carmignato, Lovre Krstulovic-Opara, Matej Vesenjak, Zoran Ren
Summary: The auxetic cellular structures with tetrachiral and hexachiral geometries were fabricated using LPBF technology from two different materials, and their mechanical properties were experimentally determined. Results showed that hexachiral structures have a more ductile response compared to tetrachiral structures.
ADDITIVE MANUFACTURING
(2021)
Article
Engineering, Biomedical
S. Murchio, M. Dallago, F. Zanini, S. Carmignato, G. Zappini, F. Berto, D. Maniglio, M. Benedetti
Summary: This study investigated the mechanical properties of thin L-PBF Ti6Al4V lattice struts at different building orientations. The results showed a tendency for fatigue life to decrease with decreasing building angle, mainly due to the increase in surface texture and decrease in cross-sectional regularity for low printing angles. The sensitivity to these factors was low in monotonic tensile tests, and strut failure behavior was examined using dynamic digital image correlation (DIC) of tensile tests and scanning electron imaging (SEM) of fracture surfaces.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Engineering, Mechanical
Matteo Benedetti, Ciro Santus, Vigilio Fontanari, Danilo Lusuardi, Filippo Zanini, Simone Carmignato
Summary: In this study, the possibility of inferring the critical distance from different notched geometries in fatigue critical scenarios is explored, and the proposed method is applied to notch fatigue prognosis of ductile cast iron.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Chemistry, Multidisciplinary
Lokesh Chandrabalan, Markus Baier, Roberto Meloni, Marco Pieri, Luca Ammannato, Eugenio Del Puglia, Simone Carmignato
Summary: Metal additive manufacturing, especially laser powder bed fusion, is used more and more in the gas turbine industry for creating small diameter channels. This paper proposes a new method to evaluate the geometrical and functional equivalent diameters of cylindrical channels and the roughness on the internal surface using X-ray computed tomography. The method was validated with experimental flow tests, providing a faster approach compared to traditional flow tests.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Mechanical
Miloslav Kepka, Miloslav Kepka Jr, Radovan Minich
Summary: This paper focuses on the fatigue life evaluation of the bodywork of a new articulated electric (battery) bus. The findings resulted in recommendations to improve the operational reliability of a particular vehicle and provided challenges for future research.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
T. Dusautoir, B. Berthel, S. Fouvry, P. Matzen, K-D. Meck
Summary: This study investigates the impact of post-processing treatments on the fatigue limit of additive manufactured Ti-6Al-4V under stress gradients, with a focus on surface integrity.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Zhuofan Xia, Di Wu, Xiaochen Zhang, Jianqiu Wang, En -Hou Han
Summary: The study reveals the surface-initiated rolling contact fatigue (RCF) failure mechanism under heavy load and initial high roughness surface. The results indicate that precursor of collapsed morphology and nanocrystalline layer are the main factors causing lower RCF life with high roughness compared to low roughness surfaces. The spalling failure initiating from low roughness surface under heavy load is strongly dependent on surface plastic deformation.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Daniel Gren, Knut Andreas Meyer
Summary: Rolling contact loading can cause plastic deformation and fatigue cracks. Current rail standards do not consider the effect of plasticity on mechanical behavior. This study proposes a new method for evaluating the fatigue life of deformed material and finds that superimposed compressive axial loads can increase fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
R. Kumar, S. Sanyal, J. Bhagyaraj, E. Hari Krishna, S. Mukherjee, K. Prasad, S. Mandal
Summary: This study investigates the thermomechanical fatigue (TMF) behavior of Timetal 834 alloy under different loading conditions. The results show that the alloy exhibits different cyclic hardening and softening responses at different strain amplitudes. The strain amplitude and phase angle have significant effects on the TMF life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Kai Donnerbauer, Tobias Bill, Peter Starke, Ruth Acosta, Bharath Yerrapa, Christian Boller, Klaus Heckmann, Frank Walther
Summary: Given the aging of nuclear power plants, it is important to develop methods for evaluating the integrity of components and structures in nuclear engineering. Suitable nondestructive testing methods can detect material degradation and determine its fatigue life. This study utilized various NDT parameters and scanning electron microscopic methods to explore the relationship between microstructure evolution and NDT data.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Liuyong He, Jiang Zheng, Tianjiao Li, Houkun Zhou, Lihong Xia, Bin Jiang
Summary: This study quantitatively analyzed the effects of precipitates on the deformation mode, cracking mode, and mechanical behavior of WE54 magnesium alloy during low-cycle fatigue. It was found that precipitates promoted the activation of dislocation slip and suppressed the activation of twinning, affecting the cracking mode and mechanical behavior.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Xiangkang Zeng, Conghui Zhang, Wenguang Zhu, Mingliang Zhu, Tongguang Zhai, Xiaomei He, Kangkai Song, Zhuohang Xie
Summary: The cyclic deformation behaviors and damage mechanisms of pure Zr were investigated. The cyclic stress response was mainly influenced by substructure evolutions. Prismatic < a > dislocation slip was identified as the dominant deformation mechanism. Fatigue damage was not only influenced by the initial texture, but also other factors.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Jingyu Yang, Bingbing Li, Yiming Zheng, Gang Chen, Xu Chen
Summary: Heat treatment is used to improve the low-cycle fatigue performance of additive manufactured 316LN stainless steel. The heat-treated material demonstrates initially cyclic hardening followed by softening behavior, and shows a stronger resistance to crack propagation compared to the as-built material, resulting in a longer fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Lang Zou, Dongfang Zeng, Xiong Chen, Jun Li, Hai Zhao, Liantao Lu
Summary: This study investigates the competitive relationship between fretting fatigue and plain fatigue in press-fitted railway axles. By changing the depth of the stress relief groove, the plain fatigue limit and fretting fatigue strength were tested. Detailed information was gathered, and an evaluation methodology integrating finite element simulation and the Modified Wohler Curve Method was established. The study concludes that the optimal groove depth, which balances the anti-fatigue capabilities, depends on the number of test cycles.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Davide Leonetti, Koji Kinoshita, Yukina Takai, Alain Nussbaumer
Summary: This paper investigates the fatigue behavior of non-load-carrying transverse welded steel attachments, including fatigue crack monitoring and fracture surface analysis under constant and variable amplitude loading. A procedure is proposed to obtain a Markov transition matrix based on the measured strain signal and to randomly resample the stress history for variable amplitude fatigue tests.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Zhe Zhang, Bing Yang, Yuedong Wang, Shoune Xiao
Summary: This paper presents a method for designing fatigue life prediction models with small sample sizes by handling limited sample data. The method integrates the equivalent structural stress method with the maximum likelihood estimation method and adds reliability verification, resulting in enhanced goodness of fit, stability, and optimized sample quantity.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Cooper K. Hansen, Gary F. Whelan, Jacob D. Hochhalter
Summary: This paper presents a method to address the computational demand issue of computing FIPs using CPFEM by developing an interpretable machine learning model. Genetic programming is used to evolve interpretable expressions of FIPs from microstructure features, and these models can serve as efficient substitutes for CPFEM and be easily integrated into engineering workflows.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Luca Susmel
Summary: This paper discusses the problem of estimating notch fatigue limits using machine learning. The results show that machine learning is a promising approach for designing notched components against fatigue. The accuracy in estimating the fatigue limit can be increased by increasing the size and quality of the calibration dataset, as well as including additional input features.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Kefeng Gao, Guoqi Tan, Yanyan Liu, Qiang Wang, Qian Tang, Xuegang Wang, Qiqiang Duan, Zengqian Liu, Zhe Yi, Zhefeng Zhang
Summary: Bioinspired architectures have significant effects on material enhancement. This study investigates the fatigue properties of bioinspired ceramic-polymer composites and natural nacre, revealing the close relationship between architectural types, orientations, fatigue performance, and damage mechanisms.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)