Article
Materials Science, Ceramics
Mingming Chen, Qinghui Liu
Summary: A multi-scale modelling approach was developed in this paper to predict the progressive damage and failure behaviour of 2D woven SiC/SiC composites. By establishing models at the tow scale and meso-scale, the damage and failure processes of the composite were successfully simulated.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Xu Ren, Yuanming Huo, Seyed Reza Elmi Hosseini, Tao He, Zhenrong Yan, Fabio A. O. Fernandes, Antonio B. Pereira, Hongchao Ji, Jie Bai, Zhiyuan Bian, Xiangyang Du
Summary: In this paper, a novel multi-scale modeling approach is proposed to predict and simulate the evolution of microstructure in cross-wedge rolling. The cellular automata model and finite element method are coupled to visually simulate and predict the dynamic recrystallization microstructure. The simulation results on the high-speed railway axle reveal significant differences in microstructure among different regions, indicating that cross-wedge rolling is a typical local forming process.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Mechanics
Jide Oyebanji, Changze Sun, Mohamed Nasr Saleh, Kapil Krishnan, Zhongwei Guan
Summary: In this paper, a plug-in called FibrePlug, which is developed within the ABAQUSTM Simple GUI (RSG) and Fox GUI development environments, is introduced. Unlike traditional meso-scale modeling, FibrePlug provides an advanced user-friendly environment for modeling fibers at both micro- and meso-scales simultaneously.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Manufacturing
S. Z. H. Shah, P. S. M. Megat-Yusoff, S. Karuppanan, R. S. Choudhry, Z. Sajid
Summary: This study introduces a multiscale progressive damage modelling methodology for 3D woven composites, which accurately simulates the damage response. The model combines global analysis with local damage response and has been validated through experiments on different composite materials to demonstrate its accuracy and efficiency.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Mechanics
Xinyi Song, Di Zhang, Jin Zhou, Xuefeng Chen, Shenghao Zhang, Longteng Bai, Xiaohui Yang, Feiping Du, Zhongwei Guan, Xitao Zheng, Wesley J. Cantwell
Summary: A hierarchical multi-scale numerical model is developed to predict the effect of cross-sectional geometric properties on the mechanical response of 3D braided composites. Damage evolution is evaluated based on a continuous damage mechanics approach. The research offers a theoretical analysis for selecting the optimized fiber bundle geometry for FE predictions of 3D braided composites.
COMPOSITE STRUCTURES
(2023)
Article
Construction & Building Technology
Sadjad Naderi, Mingzhong Zhang
Summary: This study used a novel computational framework to simulate the fracture process of concrete under static and dynamic tensile loading, revealing the significant role of irregularly shaped coarse aggregates in micro-crack nucleation and ultimate fracture pattern, while showing an insignificant effect on the tensile strength of concrete.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Mechanics
Sadjad Naderi, Mingzhong Zhang
Summary: This paper presents a novel meso-scale modelling framework to investigate the fracture process in steel fibre reinforced concrete under uniaxial tension and compression. The study considers the 3D mesostructural characteristics of the SFRC, including different types of fibres, realistic shaped aggregates, mortar, interfacial transition zone, and voids. The results show that straight and hooked-end fibres significantly improve the compressive damage tolerances of concrete while spiral fibres have a negligible effect. The tensile macro-damage level index is reduced by all fibres, with the higher anchoring capacity of spiral fibres reducing the reinforcement performance.
COMPOSITE STRUCTURES
(2022)
Article
Construction & Building Technology
Sadjad Naderi, Wenlin Tu, Mingzhong Zhang
Summary: A meso-scale modelling framework was used to investigate the fracture process in concrete under compression, showing that aggregate shape has minimal effect on compressive strength while aggregate irregularity significantly influences crack initiation and growth in concrete.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Mechanics
Ivica Smojver, Dominik Brezetic, Darko Ivancevic
Summary: In this study, a multi-scale framework is used to model the low velocity impact and post-impact healing of woven intrinsically self-healing FRP composite structures. The developed model accurately predicts damaging mechanisms and fiber damage, which is validated by experimental results.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Mechanical
Ahmed Boukar, Stephane Corn, Pierre R. L. Slangen, Patrick Ienny
Summary: The dynamic behavior of biaxial glass fiber reinforced laminate composites under low velocity impact test is described in this paper through finite element modeling and experimental investigations. The proposed model shows good correlation with experimental results and captures the progressive dynamic failure of the laminate composite.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
K. Sithole, C. L. Taylor, J. P. Rouse, C. J. Hyde
Summary: The study aims to determine the capability of the small punch test in measuring the mechanical properties of CoNiCrAlY, a two-phase bond-coat material in thermal barrier coatings. It utilizes a multi-scale modeling approach, developing 2-dimensional representative volume elements and finite element models for the small punch test. The obtained Young's moduli and Poisson's ratios from the representative volume elements are compared with analytical homogenization methods. The results suggest that the small punch test is influenced more by material yield properties rather than variations in elastic behavior.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Composites
Yutong Fu, Xuefeng Yao
Summary: The research explores the designing and fabrication of continuous fiber reinforced thermoplastic composites through additive manufacturing technology. It simulates the manufacturing process and mechanical properties, providing insights for the design and evaluation of 3D printed CFRTPCs. The study offers a theoretical basis and simulation method for predicting the mechanical properties of 3D printed CFRTPCs.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Peng Zhang, Chunyu Yang, Yonggang Tong, Lairong Yin, Yongle Hu, Xiubing Liang, Yang Li, Zhibin Zhang
Summary: This paper establishes a multi-scale finite element model to predict the mechanical properties and failure behaviors of 3D needled C/C-SiC composites. The effects of fiber volume fraction, inter-facial bonding strength, residual Si elements, and porosity on the mechanical properties are systematically analyzed. The damage evolution process and failure mechanism of the composites are also investigated in detail.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Mechanics
Carolyn Oddy, Magnus Ekh, Martin Fagerstrom
Summary: There is a growing demand for lightweight materials with improved performance and reduced manufacturing costs in various industries. This study proposes a macroscopic model to predict the material response of a 3D glass fiber reinforced epoxy material system, capturing experimentally observed inelastic strains and stiffness reductions. The model is general, thermodynamically consistent, and allows for modular addition and calibration of various non-linear phenomena depending on loading direction.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Mechanics
An Le, Sanjay Nimbalkar, Navid Zobeiry, Sardar Malek
Summary: This paper investigates the bending response of cured and uncured viscoelastic composite laminates at different loading rates using a three-dimensional multi-scale modelling framework. The study aims to understand the effect of fibre waviness on wrinkling evolution during the forming process of advanced composites. The results show that the proposed multi-scale modelling framework is effective in predicting the behaviour of viscoelastic composites with various yarn architectures.
COMPOSITE STRUCTURES
(2022)
Article
Chemistry, Physical
T. J. Marrow, I Sulak, B-S Li, M. Vuksic, M. Williamson, D. E. J. Armstrong
Summary: Nano-indentation was used to study the (0001) surface of highly oriented pyrolytic graphite at temperatures up to 600 degrees C. The results revealed an increased tendency for inelastic deformation at high temperature, with buckling and kink formation of the graphite crystals.
Article
Computer Science, Interdisciplinary Applications
Jose Maria Benitez, Luis Garcia-Mozos, Anastasio Santos, Francisco Javier Montans, Luis Saucedo-Mora
Summary: Tumor-induced angiogenesis is a process where new blood vessels are formed from hypoxic cells in tumors. Angiogenic factors released by these cells diffuse and facilitate the development of new micro-vessels from the existing vascular network. This study presents a new 3D agent-based model that considers the role of hypoxia and the relative position of the existing vessels and tumor structure in the distribution of new blood vessels. The diffusion of angiogenic factors and oxygen is modeled using a numerical convolution superposition approach. Results demonstrate the importance of tip endothelial cells in early stages of angiogenesis and the role of anastomosis in reducing hypoxia at later stages.
ENGINEERING WITH COMPUTERS
(2022)
Article
Materials Science, Multidisciplinary
Jie Shen, T. James Marrow, Daniel Scotson, Xiaochao Jin, Houzheng Wu, Hongniao Chen
Summary: The fracture toughness of fine-grained nuclear graphite SNG742 was investigated through observation of stable crack propagation and numerical simulations using digital volume correlation and image processing algorithms. The method allows evaluation of fracture toughness without prior knowledge of the material's elastic properties and has potential applications.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Abdalrhaman Koko, Elsiddig Elmukashfi, Thorsten H. Becker, Phani S. Karamched, Angus J. Wilkinson, James Marrow
Summary: This study used high angular resolution electron backscatter diffraction to quantify the local elastic field in intragranular slip bands of age-hardened duplex stainless steel, revealing the changes in elastic fields around the tip of slip bands under different loading conditions.
Article
Materials Science, Multidisciplinary
S. Zhao, Y. Chen, L. Saucedo-Mora, T. Connolley, T. J. Marrow
Summary: This study aims to develop a novel methodology for measuring the deformation of ceramic composite tubes. By observing the burst test of SiC/SiC composite tubes using high resolution X-ray tomography and measuring the three-dimensional displacements using digital volume correlation, the results regarding strain and cracking were obtained.
EXPERIMENTAL MECHANICS
(2023)
Article
Nanoscience & Nanotechnology
Eloise Veys, Louis Makower, Marcus Williamson, Lena M. Saure, Rainer Adelung, Fabian Schutt, Nicola M. Pugno, Thomas James Marrow
Summary: Zinc oxide tetrapods possess remarkable functional and mechanical properties and can be applied in various fields including nanoelectronic and optoelectronic sensing, functional composites and coatings, and energy harvesting and storage. Through assembly into high porosity macroscopic ceramic framework structures, they can serve as versatile templates for fabricating other foam-like materials with multiple scales. In this study, we investigated the three-dimensional structure of low density interconnected zinc oxide tetrapod networks using high resolution X-ray computed tomography. In-situ observations during mechanical loading revealed the heterogeneous development of anelastic strain (damage) during compression and the homogeneous elastic recovery during unloading. Individual tetrapods were observed to deform through arm rotation to accommodate strain.
SCRIPTA MATERIALIA
(2023)
Article
Engineering, Civil
Ismael Ben-Yelun, Miguel Diaz-Lago, Luis Saucedo-Mora, Miguel Angel Sanz, Ricardo Callado, Francisco Javier Montans
Summary: Applications of Structural Health Monitoring (SHM) combined with Machine Learning (ML) techniques enhance real-time performance tracking and increase structural integrity awareness of civil, aerospace and automotive infrastructures. In this paper, a novel ML algorithm is developed to predict fatigue damage in composite materials using the signals of Lamb Waves and other meaningful features. The proposed algorithm achieves good accuracy and computation times comparable to other ML algorithms.
ENGINEERING STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Abdalrhaman Koko, Thorsten H. Becker, Elsiddig Elmukashfi, Nicola M. Pugno, Angus J. Wilkinson, James Marrow
Summary: Understanding the local fracture resistance of microstructural features is crucial for the microstructure-informed design of materials. This study presents a novel approach to evaluate stress intensity factors directly from experimental measurements, using high-resolution electron backscatter diffraction. An exemplar study is conducted on a quasi-static crack propagating on low index {hkl} planes in a (001) single crystal silicon wafer.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Chemistry, Physical
Ismael Ben-Yelun, Guillermo Gomez-Carano, Francisco J. San Millan, Miguel Angel Sanz, Francisco Javier Montans, Luis Saucedo-Mora
Summary: The goal of this research is to introduce a novel tunable 3D metamaterial that can reproduce a wide spectrum of 3D auxetic and non-auxetic Poisson's ratios and Young's moduli. By changing the connectivity and position of the cell's internal nodes, this metamaterial can accommodate different spatial curvatures and boundaries. This wide range of variation is achieved through simple spatial triangularization and allows for better adaptability to component design boundaries and shapes.
Article
Chemistry, Physical
Thomas Zillhardt, Genoveva Burca, Wolfgang Ludwig, Dong Liu, T. James Marrow
Summary: This study demonstrates that the reorientation of crystal domains accompanies the accommodation of mechanical strain in unirradiated polygranular graphite. The researchers used in situ neutron and synchrotron X-ray experiments to observe the changes in crystal orientation and local neutron scattering when strain was applied. The study provides new evidence for crystal deformation mechanisms that contribute to the elastic non-linearity and permanent set of polycrystalline graphite.
Article
Mathematics, Applied
Luis Saucedo-Mora, Ismael Ben-Yelun, Hugo Garcia-Modet, Miguel Angel Sanz-Gomez, Francisco Javier Montans
Summary: 3D printing is changing the design and manufacturing of high value industrial components, pursuing a macro-micro structural optimization of architected metamaterials to customize mechanical properties. Topology optimization techniques facilitate the design of microstructures and overall component topology. A novel topology optimization algorithm is proposed, aiming to homogenize the strain level by minimizing its standard deviation, without imposing constraints and reducing external parameters. The proposed technique, working directly with moduli, is suitable for material-component design using functionally graded metamaterials and can be extended to non-linear isotropic materials.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2023)
Article
Computer Science, Software Engineering
Ismael Ben-Yelun Insenser, Elemer Jose San Miguel Niddam, Luis Saucedo-Mora, Miguel angel Sanz Gomez, Jose Maria Benitez Baena, Francisco Montans Leal
Summary: The presented software is capable of filling a complex design in .stl format with a given metamaterial, achieving a graded stiffness. It is also configured to create the final design in different formats for virtual testing in a commercial FEM, editing the design in a CAD software, and exporting it in a 3D printable format.
Article
Engineering, Multidisciplinary
Clara Guilhaumon, Jorge Arias, Angel A. Rodriguez-Sevillano, Luis Saucedo-Mora, Francisco Montans
RESULTS IN ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Ismael Ben-Yelun, Luis Saucedo-Mora, Miguel Angel Sanz, Jose Maria Benitez, Francisco Javier Montans
Summary: The micron resolutions achieved by 3D printers enable a paradigm shift in the design of components, where the focus is on optimizing both the topology and microstructure of the material. This new design approach allows for tailored material properties at different locations in the component, resulting in different mechanical properties and optimal microstructures. The authors propose a new topology optimization approach that aims to minimize the standard deviation of deformation levels across the component, leading to a homogeneously deformed component with optimized material properties. This method can be extended to anisotropy, nonlinearity, and other optimization objectives.
COMPUTERS & STRUCTURES
(2023)
