Article
Materials Science, Composites
Mingyang Chen, Zhibin Li, Zeshuai Yuan, Liao-Liang Ke
Summary: In this paper, a new class of composites reinforced by axially functionally graded fibers is proposed, with high stiffness in the middle and degrading to low stiffness at the ends. The analysis shows that this functionally graded design effectively alleviates shear stress concentration and enhances the mechanical performance of the composite by raising the threshold of interfacial debonding. The study also discusses the effects of design parameters on the mechanical properties of the composite.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Industrial
Wenhai Zheng, Dabin Zhang, Dongsheng Wu, Ninshu Ma, Peihao Geng
Summary: The use of zirconia-toughened alumina (ZTA) can improve the performance of titanium/ceramic functionally graded materials (FGMs) and suppress cracks during the manufacturing process.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
B. Cheraghali, H. M. Ghasemi, M. Abedini, R. Yazdi
Summary: This study aims to improve the biocompatibility and tribocorrosion performance of titanium alloys by generating a porous anodic oxide layer. The results show that the anodized layers can withstand tribological stresses at certain sliding distances but experience local damages or complete removal under longer sliding distances.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Biology
Abdelhak Ouldyerou, Hassan Mehboob, Ali Merdji, Laid Aminallah, Ali Mehboob, Osama M. Mukdadi
Summary: The long-term success of dental implants depends on the implant material, design, and bone density. Functionally graded porous materials and designs can address the complications of conventional implants in high-density bone, as they can control stiffness locally to meet biomechanical requirements.
COMPUTERS IN BIOLOGY AND MEDICINE
(2022)
Article
Engineering, Multidisciplinary
A. Pais, J. L. Alves, J. Belinha
Summary: Recent developments suggest the potential use of triply periodic minimal surfaces as bone tissue scaffold, with the ability to enhance mechanical properties through functional gradients of cellular structures to avoid stress shielding and bone decay. The study found that the gyroid infill exhibits similar mechanical behavior to bone tissue and can be extrapolated to other materials, showing promising results for bone scaffolding applications.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Mechanics
R. C. Batra
Summary: The study delves into controlling the mechanical properties of materials under different conditions, highlighting the importance of utilizing stress components to maximize material performance. Analyzing the behavior of FG and linearly elastic beams under three-dimensional flexural deformations reveals the influence of Young's modulus distribution on beam performance under certain conditions.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Manufacturing
Rui Wang, Dongdong Gu, Kaijie Lin, Caiyan Chen, Qing Ge, Deli Li
Summary: This research reveals the mechanisms of material densification, element diffusion, interfacial reaction, crystal growth, and performance enhancement in multi-material laser powder bed fusion (LPBF) through experiments and simulations. Fully dense multi-material parts with strong metallurgical bonding and gradually changing microhardness at the interface were achieved by optimizing the printing parameters. The laser printed TiB2/Ti6Al4V multi-material parts exhibited excellent flexural performance with improved strength and ductility. This study is significant for the manufacturing and strengthening of ceramic/metal multi-material using laser additive manufacturing technology.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2022)
Article
Mechanics
F. Moleiro, J. F. A. Madeira, E. Carrera, A. J. M. Ferreira
Summary: This study focuses on the multiobjective design optimization of sandwich plates with ceramic-metal-ceramic functionally graded cores, considering symmetric and non-symmetric configurations under thermo-mechanical loadings. The thermal and mechanical problems are fully coupled using a mixed least-squares model with multi-field independent variables, and the optimization problem is solved by a derivative-free method. The numerical results provide optimal designs for validation, taking into account different constituent materials.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Yajun Cao, Huaiwei Huang, Yifei Ding
Summary: This paper proposes an isogeometric optimization method to optimize the material distribution of piezoelectric functionally graded material (PFGM) energy harvester. By conducting numerical examples, the convergence and accuracy of the optimization results, as well as the effects of the metallic volume ratio constraint and the initial design domain on the optimized material distribution, are studied.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Multidisciplinary
Ying Yuan, Zhen-yang Liu, Suo He, Chao Ge, Qing-bo Yu, Yuan-feng Zheng, Hai-fu Wang
Summary: This study investigated the reaction behaviors of a novel functionally graded reactive material through ballistic impact experiments, revealing that the impact direction and shock impedance of the material play a significant role in the reaction. The theoretical model developed in the study predicted that materials with higher shock impedance are conducive to the reaction of reactive materials.
DEFENCE TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Alexander A. A. Dmitrievskiy, Darya G. G. Zhigacheva, Grigory V. V. Grigoriev
Summary: The paper investigates the structural features, phase composition, and complex mechanical properties of two-layer composite ceramics based on alumina-toughened zirconia with silica added (Ca-ATZ/Ca-ATZ+SiO2). The ceramics were manufactured using a cost-effective technology involving grinding and mixing powders, layering of powder mixtures, uniaxial pressing, and two-stage sintering. It was found that the interface between compositions showed an abrupt increase in fracture toughness (by 33%) and a decrease in hardness and Young's modulus (by 8% and 7% respectively). The study demonstrated the possibility of manufacturing composite ceramics with high hardness and fracture toughness, thus extending the service life of products under high mechanical loads in a humid atmosphere due to increased resistance to low-temperature degradation.
ADVANCES IN APPLIED CERAMICS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Thais Mazzetti, Kaue Collares, Bruna Rodolfo, Paullo Antonio da Rosa Rodolpho, Francoise Helene van de Sande, Maximiliano Sergio Cenci
Summary: This study compared the survival and success rates of direct resin composite and ceramic veneers placed in a private dental practice. The results showed that ceramic veneers had superior longevity and success rates compared to direct resin composite veneers.
Article
Materials Science, Ceramics
Wei Zhao, Weilun Liu, Jiamin Wu, Qingsong Wei, Chunsheng Ye
Summary: In this study, Al2O3-based ceramic functionally graded materials (FGMs) with various proportions of 316L were fabricated using binder jetting additive manufacturing, and the low-temperature co-sintering toughening mechanism was investigated. The results showed that the addition of 316L effectively improved the toughness of the FGMs.
CERAMICS INTERNATIONAL
(2023)
Review
Chemistry, Physical
Babak Saravi, Andreas Vollmer, Maja Hartmann, Gernot Lang, Ralf-Joachim Kohal, Martin Boeker, Sebastian B. M. Patzelt
Summary: This systematic review on CAD/CAM-supported fixed dental prostheses found satisfying survival and success rates for up to 10 years, with secondary caries and chipping of the veneering being the most common complications. Further prospective studies focusing on long-term performance are needed to strengthen the current evidence available in the literature.
Article
Chemistry, Physical
Bo Yu, Zehao Lin, Jianguo Huang
Summary: Bio-inspired nanotubular Na2MoO4/TiO2 composites were synthesized using natural cellulose as a structural template. The composite with a Na2MoO4 content of 41.4% exhibited the best electrochemical properties, including high cycling stability and optimal rate capability, making it a promising material for lithium-ion batteries.
