Article
Materials Science, Ceramics
Jingkun Yuan, Lizhi Li, Jiwei Cao, Peigang He, Zhangwei Chen, Changshi Lao, Dechang Jia, Yu Zhou
Summary: The crystallization temperature of the C-f/CsGP composite was delayed due to the amorphous structure of the carbon fibers. The mechanical properties exhibited an upward trend below 1200 degrees C, but decreased as the treatment temperature increased from 1200 to 1400 degrees C, attributed to impairment of fiber properties caused by interfacial reactions.
CERAMICS INTERNATIONAL
(2021)
Article
Polymer Science
Jibing Chen, Bowen Liu, Maohui Hu, Qianyu Shi, Junsheng Chen, Junsheng Yang, Yiping Wu
Summary: This study focuses on addressing the issues raised by the current metal casings of semiconductor devices, such as resource and energy consumption, production complexity, and environmental pollution. The researchers proposed an eco-friendly and high-performance alternative material, an Al2O3 particle-filled nylon composite. The comprehensive characterization and analysis of the composite material demonstrated its significantly superior thermal conductivity and good thermal stability. The study is important as it provides a high-performance composite material that can alleviate resource consumption and environmental pollution issues, with potential applications in heat dissipation components for LED semiconductor lighting and other high-temperature environments, contributing to reducing energy consumption and environmental burden.
Article
Materials Science, Multidisciplinary
Xi Zhang, Jinsheng Liang, Junguo Li, Yanan Zeng, Suju Hao, Pengyao Liu, Hao Na
Summary: Based on the reaction between CM and Al2O3, CA6 and MA were introduced into the Al2O3-Ni system, resulting in a novel multi-phase composite material. The composite material exhibited a unique ring microstructure and improved mechanical properties. In-depth studies were conducted on the strengthening-toughening mechanisms related to this modification and improvement.
MATERIALS CHARACTERIZATION
(2022)
Article
Physics, Multidisciplinary
Lennard J. Kwakernaak, Martin van Hecke
Summary: This research presents irreversible metamaterials that have an irreversible response to cyclic driving, allowing them to count mechanical driving cycles and store the result. Furthermore, the study extends these designs to aperiodic metamaterials, which are sensitive to the order of different driving magnitudes, and introduces lock and key metamaterials that only reach a specific state for a given target driving sequence. These metamaterials are robust, scalable, and provide insights into the transient memories of complex media, opening up new possibilities for smart sensing, soft robotics, and mechanical information processing.
PHYSICAL REVIEW LETTERS
(2023)
Article
Automation & Control Systems
Zhen Liu, Yangchuan Cai, Jie Chen, Jian Han, Zhiyong Mao, Minfang Chen
Summary: In this study, a novel Mg-Zn-Ca matrix composite reinforced with 1.0 wt.% MgO nanoparticles was prepared via high shear casting and friction stir processing (FSP). The FSP treatment significantly modified the microstructure and properties of the composites, resulting in a grain size reduction of 42% and a hardness increase of 40%. Particle strengthening was found to be more dominant than grain refinement in enhancing the properties of the composites.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Te Yu, Di Wu, Bin Liang, Jiaming Wang, Xinzhu Shang, Qiong Wu
Summary: Edible films of Auricularia auricula polysaccharide (AAP) were prepared and characterized for their optical, morphological, and mechanical properties. These films were evaluated for their barrier, bactericidal, and antioxidant properties in cold meat packaging. The results showed that films prepared from 40% AAP had the best mechanical properties, with smooth surfaces, good water barrier properties, and preserved the quality of cold meat. Auricularia auricula polysaccharide is therefore a promising composite membrane additive.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Xiaofeng Wang, Mingxing Guo, Oleksandr Moliar, Wenfei Peng, Chao Xie, Jianbin Chen, Yonggang Wang
Summary: A novel thermomechanical processing method was proposed to obtain an Al-Mg-Si alloy sheet with fine grain structure, weak texture, and high plastic strain ratio. By controlling the overaging time, the grain structure can be refined, the texture can be weakened, and the plastic strain ratio can be improved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Yingchen Wang, Hongyuan Shi, Peng Zhou, Yujin Tang, Jia Liu, Liqiang Wang, Jie Li, Yuanfei Fu, Weijie Lu
Summary: Gradient TiC/Ti6Al4V composites were successfully prepared by friction stir processing, with systematic characterization of their microstructure and mechanical properties. High temperature rapid heat treatment resulted in maximum hardness of the sample, with dissolution of elements near TiC particles during rapid heating leading to increased hardness.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Rui Ke, Xiangliang Wan, Yongjie Zhang, Chengyang Hu, Kaiming Wu
Summary: This study investigated the impact of pre-deformation on the structure-deformation-property relationship in Cr-Mn-N austenitic stainless steel. The results showed that the microstructure varied with the increase of pre-reduction deformation, resulting in increased strength and decreased plasticity. These changes in mechanical properties were related to the variations in microstructuredependent deformation mechanisms.
MATERIALS CHARACTERIZATION
(2022)
Article
Automation & Control Systems
Joanna Hrabia-Wisnios, Beata Leszczynska-Madej, Marcin Madej, Aleksandra Weglowska
Summary: This study investigated the microstructure and mechanical properties of SnSbCu-bearing alloy after friction stir processing (FSP). It was found that FSP modification promotes refinement and homogenization of the microstructure and enhances flexural strength, with no changes in hardness level.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Qingle Tian, Kai Deng, Zhishuai Xu, Ke Han, Hongxing Zheng
Summary: Through centrifugal casting method, a high-strength, low-anisotropy Al-Li plate was successfully produced, and the evolution of strengthening phases was clarified using advanced analysis techniques. The plate exhibited excellent mechanical properties after deformation, annealing, and aging treatments, with an ultimate tensile strength of 496 MPa and a yield strength of 408 MPa.
Review
Materials Science, Multidisciplinary
Jinshan Li, Haoxue Yang, William Yi Wang, Hongchao Kou, Jun Wang
Summary: High-entropy alloys (HEAs) are novel alloys designed based on a new concept, showing excellent engineering properties and unique combinations of microstructures and properties. Studying the phase transition mechanism and mechanical properties of HEAs can deepen the understanding of structure control and performance improvement, leading to potential engineering applications for these alloys.
FRONTIERS IN MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Hongge Li, Yongjiang Huang, Jianfei Sun, Yunzhuo Lu
Summary: This study successfully fabricated a single-track CoCrFeMnNi high entropy alloy (HEA) using laser melting deposition (LMD) and systematically studied the microstructure and mechanical properties of the as-deposited parts. The strengthening mechanisms of the LMDed CoCrFeMnNi HEA parts were clarified, with dislocation strengthening dominating the mechanism. This research provides insights into achieving HEA parts with desired microstructure and high performance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Fluids & Plasmas
Antoine Montiel, Thuy Nguyen, Cindy L. Rountree, Valerie Geertsen, Patrick Guenoun, Daniel Bonamy
Summary: This article examines the influence of disordering joint position on the linear elastic behavior of lattice materials. The results show that disorder can make the materials more isotropic and has different effects on the stiffness of the materials depending on the lattice connectivity.
Article
Chemistry, Multidisciplinary
Xianye Li, Liang Xu, Pei Lin, Xiaodan Yang, Huamei Wang, Huaifang Qin, Zhong Lin Wang
Summary: Clusters of tightly coupled machinery units can exhibit collective behavior and behave like metamaterials to address environmental disturbances. This is particularly important for harnessing water wave energy, a promising clean energy source with huge reserves but a formidable challenge for traditional generators. In this study, a novel three-dimensional chiral network of triboelectric nanogenerators (TENGs) is designed to effectively harvest water wave energy. The network, unlike bulky and rigid machines, features a distributed architecture with chiral connections between unbalanced units, providing flexibility, hyper-elasticity, and wave absorption behavior similar to mechanical chiral metamaterials. The network can be configured to harvest wave energy in all directions at different scales and depths. An integrated energy harvesting system, combined with a power management circuit, enhances the stored energy by approximately 319 times. This study demonstrates the great potential of the novel 3D chiral network for blue energy harvesting and self-powered systems based on TENGs, which can adapt better to harsh ocean environments with flexible and distributed characteristics. It also presents a paradigm shift from mechanical metamaterial designs to energy harvesting networks, inspiring innovative energy harvesting systems and strongly coupled machinery systems based on metamaterials.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Sarah C. L. Fischer, Eduard Arzt, Rene Hensel
ACS APPLIED MATERIALS & INTERFACES
(2017)
Article
Engineering, Biomedical
Sarah C. L. Fischer, Oren Levy, Elmar Kroner, Rene Hensel, Jeffrey M. Karp, Eduard Arzt
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2016)
Article
Materials Science, Multidisciplinary
Ram Gopal Bahjepalli, Sarah C. L. Fischer, Rene Hensel, Robert M. McMeeking, Eduard Arzt
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2017)
Article
Materials Science, Multidisciplinary
Sarah C. L. Fischer, Klaus Kruttwig, Vera Bandmann, Rene Hensel, Eduard Arzt
MACROMOLECULAR MATERIALS AND ENGINEERING
(2017)
Article
Chemistry, Multidisciplinary
Sarah C. L. Fischer, Katja Gross, Oscar Torrents Abad, Michael M. Becker, Euiyoung Park, Rene Hensel, Eduard Arzt
ADVANCED MATERIALS INTERFACES
(2017)
Article
Engineering, Biomedical
Sarah C. L. Fischer, Silviya Boyadzhieva, Rene Hensel, Klaus Kruttwig, Eduard Arzt
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2018)
Article
Multidisciplinary Sciences
Silviya Boyadzhieva, Sarah C. L. Fischer, Svenja Loesch, Angela Rutz, Eduard Arzt, Klaus Kruttwig
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2018)
Article
Chemistry, Multidisciplinary
Verena Tinnemann, Luisse Hernandez, Sarah C. L. Fischer, Eduard Arzt, Roland Bennewitz, Rene Hensel
ADVANCED FUNCTIONAL MATERIALS
(2019)
Article
Polymer Science
Silviya Boyadzhieva, Katharina Sorg, Martin Danner, Sarah C. L. Fischer, Rene Hensel, Bernhard Schick, Gentiana Wenzel, Eduard Arzt, Klaus Kruttwig
Article
Materials Science, Characterization & Testing
Simon Herter, Sargon Youssef, Michael M. Becker, Sarah C. L. Fischer
Summary: The article introduces a machine learning based approach to improve the reliability of ultrasonic time-of-flight measurements, using experimental data and different preprocessing strategies based on variations in bolting configurations to ensure accuracy of the model.
JOURNAL OF NONDESTRUCTIVE EVALUATION
(2021)
Article
Chemistry, Physical
Thomas Straub, Jonas Fell, Simon Zabler, Tobias Gustmann, Hannes Korn, Sarah C. L. Fischer
Summary: This study investigates the influence of additive manufacturing process strategies on the geometry, porosity, microstructure, and mechanical properties of specimens, and their impact on the design of metamaterials. Nickel-titanium specimens with diameters ranging from 180 to 350 μm were additively manufactured using laser powder bed fusion. The specimens were characterized using various microscopy techniques to understand the relationship between process parameters, specimen diameter, and microstructure. Mechanical performance was evaluated through micro tensile testing. The study found that the process strategy affected the microstructure of the specimens without compromising quality, and all specimens exhibited a superelastic response.
Article
Materials Science, Multidisciplinary
Andre T. Zeuner, Thomas Wanski, Sebastian Schettler, Jonas Fell, Andreas Wetzig, Robert Kuehne, Sarah C. L. Fischer, Martina Zimmermann
Summary: Laser cutting is a suitable method for manufacturing complex geometries in sheet metal components, but it reduces the cyclic load capacity compared to milled components. The laser-cut edge, with its characteristic features of burr and melt droplets, acts as crack initiation sites, affecting fatigue strength. Forming processes after cutting also influence the fatigue behavior, particularly the effect of high degrees of deformation. Research on this is still lacking. The pre-deformation of AISI 304 sheets showed that high elongation caused detachment of most melt adhesions, but those still attaching formed initial notches for crack initiation, significantly lowering fatigue strength.
Article
Materials Science, Multidisciplinary
Julia Bach, Andre T. Zeuner, Thomas Wanski, Sarah C. L. Fischer, Patrick Herwig, Martina Zimmermann
Summary: This study investigates the influence of dross geometry on the fatigue behavior of AISI 304 during laser cutting. Different dross geometries were produced by varying laser cutting parameters, and four characteristic dross geometries were identified. Fatigue tests revealed that the fatigue behavior is dependent on the dross geometries due to their different notch effects. Moreover, the surface relief and dross properties of the cut edge depend on process parameters such as gas pressure and feed rate.
Article
Chemistry, Physical
Konstantin Kappe, Jan P. Wahl, Florian Gutmann, Silviya M. Boyadzhieva, Klaus Hoschke, Sarah C. L. Fischer
Summary: This work presents a novel concept for metallic metamaterials, aimed at creating next-generation reversible damping systems. A unit cell consisting of a spring and snap-fit mechanism is designed, allowing for damping properties one order of magnitude higher than conventional metal materials. The unit cells are manufactured using laser powder bed fusion and tested through cyclic compression experiments. The metamaterial exhibits damping properties comparable to polymeric foams while maintaining high environmental resistance. By adjusting geometric parameters, bistable or self-recovering characteristics can be achieved. This metamaterial has the potential to serve as a structural element in future damping or energy storage systems operating in extreme conditions.