Article
Nanoscience & Nanotechnology
Wu Gong, Takuro Kawasaki, Ruixiao Zheng, Tsuyoshi Mayama, Binxuan Sun, Kazuya Aizawa, Stefanus Harjo, Nobuhiro Tsuji
Summary: The deformation behavior of a commercial AZ31 magnesium alloy was studied during uniaxial compression at 21 K and 298 K using in-situ neutron diffraction. Decreasing the deformation temperature led to a slight increase in yield stress, but a remarkable enhancement in both the fracture stress and fracture strain. The low temperature sensitivity of the {10 (1) over bar2} extension twinning resulted in the slight increase in yield stress. At 21K, basal slip was suppressed, while extension twinning was promoted, leading to a higher twin volume fraction. The suppression of {10 (1) over bar1}-{10 (1) over bar2} double twinning in the late stage of deformation was considered to be the reason for the delayed fracture at 21 K.
SCRIPTA MATERIALIA
(2023)
Article
Metallurgy & Metallurgical Engineering
Wu Gong, Ruixiao Zheng, Stefanus Harjo, Takuro Kawasaki, Kazuya Aizawa, Nobuhiro Tsuji
Summary: The twinning and detwinning behavior of a commercial AZ31 magnesium alloy during cyclic compression-tension deformation was studied using various characterization techniques. The results showed that the volume fraction and number of residual twins increased with the number of cycles, leading to a decrease in the yield strength of compression deformation.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Nanoscience & Nanotechnology
Evgenii Vasilev, Marko Knezevic
Summary: This paper presents the main findings of an experimental investigation on the formation of voids in microstructures of pure Mg, Mg-3Zn alloy, and pure Ti after tension to near fracture. High-resolution electron backscattered diffraction (EBSD) mapping was used to observe and analyze the voids and their surrounding microstructures. The study found that the formation of voids in both Mg and Ti is influenced by microstructural heterogeneities, where twinning is predominant in Mg and grain fragmentation including shear bands is predominant in Ti. Statistical distributions were created to capture the shape and orientation of the voids. The comparisons between Mg and Ti reveal substantial differences in ductility and fracture behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Yusuke Onuki, Kasumi Masaoka, Shigeo Sato
Summary: The texture and microstructure formation of a Ca-added alloy, AZX612, during uniaxial tensile deformation at elevated temperatures is reported. The total elongation increases with temperature primarily due to prolonged unstable plastic deformation. The significant elongation at high temperatures is attributable to the relaxation of strain concentration via continuous dynamic recrystallization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
N. B. Zhang, Y. Y. Zhang, S. Chen, B. B. Zhang, Z. L. Li, H. L. Xie, L. Lu, X. H. Yao, S. N. Luo
Summary: This study investigates the onset of detwinning in magnesium alloy Mg-3Al-1Zn under continuous loading using real-time in situ synchrotron X-ray diffraction. The results reveal that detwinning of the {10 (1) over bar2} extension twins occurs immediately upon unloading, regardless of whether the twins are activated by tension parallel to or compression perpendicular to the c-axis fibers.
SCRIPTA MATERIALIA
(2021)
Article
Engineering, Multidisciplinary
P. Kot, M. Wronski, A. Baczmanski, A. Ludwik, S. Wronski, K. Wierzbanowski, Ch. Scheffzuek, J. Pilch, G. Farkas
Summary: A novel method using neutron diffraction was proposed to determine stresses and critical resolved shear stresses. The advantage of this method is that it directly measures the stresses for grain groups with similar orientations without the need for data interpretation models. It also allows for the determination of the uncertainty of the measured values and an explanation of the anisotropic mechanical behavior of the alloy. The method can also validate intergranular interaction assumptions and reduce the number of unknown parameters in the model.
Article
Nanoscience & Nanotechnology
Chunyu Wang, Yuxiu Zhang, Qinghuan Huo, Zhirou Zhang, Jiao Tang, Aki Hashimoto, Xuyue Yang
Summary: This study investigated the effects of twinning time node on the creep resistance of an extruded Mg-2wt%Y sheet. Pre-compression with a low strain before creep resulted in a large amount of {10 (1) over bar2} twins, impacting the creep resistance of the samples. The dominant creep mechanisms differed between samples with and without pre-compression, with the presence of twins affecting the creep rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Jan Dittrich, Gergely Farkas, Daria Drozdenko, Michal Knapek, Kristian Mathis, Peter Minarik
Summary: A combination of advanced in-situ experimental techniques, including neutron diffraction, acoustic emission, and electron backscattered diffraction, was used to investigate the deformation behavior of magnesium alloys. The potential and limitations of these techniques were demonstrated in a study on the influence of crystallographic texture on deformation mechanisms in a hot-rolled sheet of the AZ31 alloy. The results showed the twinning activity and its evolution, as well as the deformed microstructure, providing valuable insights into the deformation mechanisms of the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Qichang He, Xiangyu Zhou, Xiaodan Zhang, Chuhao Liu, Huamiao Wang
Summary: Magnesium alloys, as the lightest structural metals, have gained significant attention in various fields. In this study, uniaxial tension and compression tests were conducted on hot-rolled magnesium alloy plates, and neutron diffraction experiments were employed to characterize the evolution of macroscopic mechanical response and microscopic mechanisms. Additionally, a twinning and detwinning (TDT) model based on the elastic visco-plastic self-consistent (EVPSC) model has been proposed to provide a comprehensive understanding of the inelastic behavior of magnesium alloys from multiple perspectives.
Article
Chemistry, Physical
Ning Lv, Lingyu Zhao, Hong Yan, Boyu Liu, Yaozong Mao, Zhiwei Shan, Rongshi Chen
Summary: The texture tailoring, twinning, and dynamic recrystallization behaviors of a Mg-17Gd (wt%) alloy were investigated through compressing the alloy with a <0001> fiber texture along different directions at room temperature. The results showed that twinning was activated in {10-12} and {11-21} planes. The activation of {10-12} twinning could be explained by Schmid law, while the activation of {11-21} twinning was better explained by the basal slip transfer condition. Grain refinement occurred in specimens with large strain, resulting in a decrease in average grain size from -27 μm to -12 μm. The mechanism of grain refinement involved the restriction of twin boundaries' mobility, formation of random high angle grain boundaries (HAGBs), and the formation of new grains through dislocation-twin interaction and SF difference within the parent grain.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Hongjia Li, Zhaolong Yang, Huahai Shen, Yuanhua Xia, Jian Li, Zhijian Fan, Chaoqiang Huang, Guangai Sun, Jian Gong
Summary: A combined experimental and computational effort was conducted to investigate the microscopic deformation behavior of B19' martensitic NiTi during compressive loading-unloading. In situ neutron diffraction experiment and an elastic-viscoplastic self-consistent (EVPSC) model incorporating a domino detwinning scheme were used to interpret the experimental data and elucidate the deformation mechanisms. The model predictions showed good agreement with the in situ load-unload stress-strain curve and lattice strains, and were further validated against deformed texture and individual microstrains from published work. The effects of domino detwinning on intergranular stresses and the various deformation mechanisms during compressive load and unload processes were thoroughly discussed by comparing simulations and experiments.
Article
Nanoscience & Nanotechnology
T. Nakata, C. Xu, K. Sugiya, Y. Yoshida, K. Yoshida, L. Geng, S. Kamado
Summary: An anomalous in-plane anisotropy was observed in a basal-textured Mg-Al-Zn alloy sheet due to the high activation of tensile twinning induced by a small fraction of transverse direction (TD)-oriented (0001) poles. This led to deteriorated tensile properties along the TD, emphasizing the importance of microtexture design for high-performance wrought magnesium.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Jiaxiang Li, Qinghuan Huo, Chunyu Wang, Yuxiu Zhang, Zhirou Zhang, Gang Feng, Xuyue Yang
Summary: The results of the study demonstrated a clear tension-compression asymmetry in the creep behavior of the alloy under tensile and compressive creep loading along the rolling direction and the normal direction. Twinning played a role in deteriorating the creep resistance of certain samples and causing asymmetrical behavior in the results. The T-RD sample showed the best creep resistance, while the C-ND sample followed, with the C-RD and T-ND samples showing similarly poor creep resistance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Hongjia Li, Fredrik Larsson, Magnus Hornqvist Colliander, Magnus Ekh
Summary: Anisotropic 1-site and 2-site self-consistent models have been developed to describe the elastic-viscoplastic behavior of polycrystalline materials deformed to finite strains. The choice of rate-dependent constitutive law at single crystal level is discussed and verified through fitting experimental data. Both models have been validated by thoroughly fitting experimental data in literatures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Dexin Zhao, Renhai Shi, Peter Evans, Alan A. Luo, Kelvin Y. Xie
Summary: The newly developed Mg-2Zn-0.3Ca-0.2Ce-0.1Mn (ZXEM2000) wrought alloy exhibits exceptionally high tensile ductility. The high ductility of ZXEM2000 is attributed to weaker texture, fine grain size, reduced twinning, and increased cross-slip frequency of c +a dislocation. These findings provide important insights for improving ductility of magnesium alloys in future alloy design and development.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Vickey Nandal, Bushra Harun, R. Sarvesha, Sudhanshu S. Singh, E-Wen Huang, Yao-Jen Chang, An-Chou Yeh, Jayant Jain, Suresh Neelakantan
Summary: Sequential transformation of precipitate structure from L1(2) to B2-NiAl has been observed in Al0.5Co1.5CrFeNi1.5 alloy with increasing aging temperature. A coarser and more stable B2-NiAl rich precipitate is formed at higher aging temperatures (850 degrees C) due to the higher thermodynamic stability of B2-NiAl precipitates.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Tu-Ngoc Lam, Yu-Hao Wu, Chia-Jou Liu, Hobyung Chae, Soo-Yeol Lee, Jayant Jain, Ke An, E-Wen Huang
Summary: In this study, the strain-controlled low-cycle fatigue behavior and microstructural evolution of SLM-fabricated 15-5 PH steel were investigated. It was found that there was a significant tension-compression asymmetry in the material.
Article
Chemistry, Physical
You Sub Kim, Hobyung Chae, E-Wen Huang, Jayant Jain, Stefanus Harjo, Takuro Kawasaki, Sun Ig Hong, Soo Yeol Lee
Summary: In this study, a non-equiatomic high-entropy alloy with a stable solid solution and high stacking fault energy was successfully manufactured. The alloy exhibited a good combination of strength and ductility, which can be attributed to the active motion of dislocations and lattice distortion.
Article
Crystallography
Tu-Ngoc Lam, Mao-Yuan Luo, Takuro Kawasaki, Stefanus Harjo, Jayant Jain, Soo-Yeol Lee, An-Chou Yeh, E-Wen Huang
Summary: In this study, equiatomic CoCrFeNi and CoCrFeMnNi high-entropy alloys (HEAs) were systematically investigated. The results showed that the elongation of CoCrFeMnNi HEA was 14% lower, but the yield strength and ultimate tensile strength were increased by 17% and 6%, respectively.
Article
Instruments & Instrumentation
Yu-Hao Wu, Yung-Yang Lin, Jeng-Lung Chen, Shih-Yu Fu, Shu-Chi Huang, Chien-yu Lee, Bo-Yi Chen, Gung-Chian Yin, E-Wen Huang, Mau-Tsu Tang, Bi-Hsuan Lin
Summary: This study develops visualization methods using X-ray nanoprobe techniques to characterize europium-doped BaAl2O4 phosphors. The results show that X-ray fluorescence mapping can provide information on elemental and valence state distributions of europium ions. The emission properties can be understood through correlation analysis.
JOURNAL OF SYNCHROTRON RADIATION
(2022)
Article
Materials Science, Multidisciplinary
Chi-Hung Lee, Hsu-Hsuan Chin, Kun-Yuan Zeng, Yao-Jen Chang, An-Chou Yeh, Jien-Wei Yeh, Su-Jien Lin, Chun-Chieh Wang, Uwe Glatzel, E-Wen Huang
Summary: In this study, the magnetic properties of (CoCrFeNi)(1-x)Mn-x high-entropy alloys (HEAs) were systematically explored by tuning the stoichiometric Mn composition. It was observed that the incorporation of Mn atoms led to a change from ferromagnetic to ferrimagnetic behavior, and a significant reduction in magnetization was measured with the incorporation of Mn atoms. A mechanism was proposed, suggesting that the Mn atoms flip the moments of neighboring atoms, resulting in the observed reduction in magnetization in CoFeNi-based HEAs.
FRONTIERS IN MATERIALS
(2022)
Article
Chemistry, Physical
Chun-Chieh Wang, Ji-Heng Chen, Jien-Wei Yeh, Su-Jien Lin, Shou-Yi Chang, Yu-Chieh Lo, Chao-Chun Yen, Kuan-Hao Lin, Chieh-Min Tseng, Tu-Ngoc Lam, Shin-An Chen, Chan-Sheng Wu, Chung-Kai Chang, Bi-Hsuan Lin, Mau-Tsu Tang, Hwo-Shuenn Sheu, Shi-Wei Chen, E-Wen Huang
Summary: The extraordinary dynamics of microstructures, such as various dislocations, stacking faults, twinning, and polymorphism transformations, dominate the mechanical performance of high-entropy alloys. The study reveals the influence of initial microstructure on stacking fault energy reduction and twinning formation, as well as the observation of twinning in the HCP phase of CoCrFeMnNi alloy under high pressure for the first time.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Hobyung Chae, Sukho Seo, Yong Chan Jung, E-Wen Huang, Jayant Jain, Jun Hyun Han, Soo Yeol Lee
Summary: In this study, the corrosion behaviors of ferritic-martensitic steels, austenitic steels, and Ni-based alloys were examined in high-temperature CO2 environments. Machine learning based on experimental data and a SCO2 database was used to quantify the contributing factors and reveal the correlation between CO2 and SCO2 corrosion. The results showed that Ni-based alloys exhibited the highest corrosion resistance, and the most important factors influencing SCO2 corrosion were material type, temperature, exposure time, Cr content, flow rate, and pressure.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Mao-Yuan Luo, Tu-Ngoc Lam, Pei-Te Wang, Nien-Ti Tsou, Yao-Jen Chang, Rui Feng, Takuro Kawasaki, Stefanus Harjo, Peter K. Liaw, An-Chou Yeh, Soo Yeol Lee, Jayant Jain, E-Wen Huang
Summary: The effect of grain size on the strain-controlled low-cycle fatigue properties of CoCrFeMnNi high-entropy alloys was investigated. It was found that fine-grained alloys exhibited more prominent secondary cyclic hardening behavior compared to coarse-grained alloys. By tuning the grain size, fatigue-resistant high-entropy alloys can be designed.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Shi-Wei Chen, E-Wen Huang, Sung-Mao Chiu, Mark Reid, Cheng-Yen Wu, Anna M. Paradowska, Tu-Ngoc Lam, Yu-Hao Wu, Soo Yeol Lee, Shao-Chien Lu, Shin-An Chen, Yan-Gu Lin, Shih-Chang Weng
Summary: The role of residual stress in machine tools is critical for achieving high accuracy. This research systematically investigated the residual stress in a stress frame of gray iron using synchrotron X-ray and neutron sources. The results shed light on improving the mechanical stability of machine tool materials.
FRONTIERS IN MATERIALS
(2022)
Article
Automation & Control Systems
You Sub Kim, Daeho Yun, Jun Hyun Han, Md. R. U. Ahsan, E-Wen Huang, Jayant Jain, Changwook Ji, Duck Bong Kim, Soo Yeol Lee
Summary: This study presents a bimetallic structure manufactured by gas-metal-arc-welding based on wire-arc additive manufacturing technology. The structure was heat treated for improved mechanical properties, resulting in a microstructural change and enhanced tensile strength. The epitaxial growth at the bimetallic interface and dynamic strain hardening at the interface contributed to the higher hardness observed.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
You Sub Kim, Woo Cheol Kim, Jayant Jain, E-Wen Huang, Soo Yeol Lee
Summary: This study analyzed the corrosion failure of a boiler water wall tube and identified overheating by flames as the cause of failure. The study found that the increase in localized temperature caused a change in the microstructure of the tube, making it more brittle. It also identified the development of tensile residual stresses and the formation of cavities or microcracks along grain boundaries as contributing factors. High-temperature hydrogen embrittlement combined with stress corrosion cracking initiated multiple microcracks and resulted in intergranular fracture inside the tube.
Article
Chemistry, Physical
Tu-Ngoc Lam, Kuang-Ming Chen, Cheng-Hao Tsai, Pei- Tsai, Meng-Huang Wu, Ching-Chi Hsu, Jayant Jain, E-Wen Huang
Summary: To mimic bone and reduce the stress shielding effect of metallic biomaterials, porous CoCrMo alloys with different volume porosities were produced via selective laser melting. A heat treatment process was applied to increase the volume fraction of the desired structure. The compressive mechanical properties were investigated and compared with bone tissue.
Article
Chemistry, Multidisciplinary
Ba Thong Trinh, Hanjun Cho, Deunchan Lee, Oleksii Omelianovych, Taehun Kim, Sy Khiem Nguyen, Ho-Suk Choi, Hongki Kim, Ilsun Yoon
Summary: A simple in situ method is introduced to fabricate Au nanoparticles on cellulose filter papers as dual-functional substrates for solar-to-steam (STS) generation and surface-enhanced Raman spectroscopy (SERS) sensing. The substrates exhibit high solar absorption and achieve a stable evaporation rate under sunlight illumination. Enriched SERS hotspots between AuNPs endow the substrates with the ability to detect chemical contamination in water, and the purified water can be analyzed using SERS for confirmation.
Article
Materials Science, Multidisciplinary
Nooruddin Ansari, Dong-Hyun Lee, E-Wen Huang, Jayant Jain, Soo Yeol Lee
Summary: The present study investigates the anisotropic microstructure, nanomechanical, and corrosion behavior of direct energy deposited Ti-13Nb-13Zr biomedical alloys. The study reveals different mechanical behaviors in different planes, with the xy plane showing better indentation hardness and lower strain rate sensitivity compared to the x-z plane. The microstructure of the xy plane is finer, leading to better strength and corrosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yanzheng Wang, Qian Wu, Yiran Tian, Guoliang Huang
Summary: This paper proposes the microstructure design of an odd plate and investigates the directional wave energy amplification and the presence of interface waves in odd plates through theoretical and numerical analysis. The research findings contribute to the understanding of elastic behavior in 2D non-Hermitian systems.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
F. Greco, D. Codony, H. Mohammadi, S. Fernandez-Mendez, I. Arias
Summary: This study overcomes the difficulty of harnessing the flexoelectric effect by designing multiscale metamaterials. Through topology optimization calculations, we obtain optimal structures for various apparent piezoelectric properties and find that low-area-fraction lattices are the preferred choice. The results show competitive estimations of apparent piezoelectricity compared to reference materials such as quartz and PZT ceramics.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Xiaoxuan Zhang, Tryaksh Gupta, Zhenlin Wang, Amalie Trewartha, Abraham Anapolsky, Krishna Garikipati
Summary: This study presents a computational framework for coupled electro-chemo-(nonlinear) mechanics at the particle scale in solid-state batteries, including interfacial fracture, degradation in charge transfer, and stress-dependent kinetics. The discontinuous finite element method allows for arbitrary particle shapes and geometries.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Chengguan Zhang, Xavier Balandraud, Yongjun He
Summary: The coexistence of both austenite and martensite is a common characteristic in Shape Memory Alloys (SMAs). The multiple-domain microstructures, consisting of austenite, martensite twins, and individual martensite variants, evolve collectively during the phase transformation, affecting the material's macroscopic response. This paper presents an experimentally observed interface consisting of five domains in a Ni-Mn-Ga single-crystal, and analyzes the effects of thermal loading path and material initial state on the domain pattern formation.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Shaobao Liu, Haiqian Yang, Guang-Kui Xu, Jingbo Wu, Ru Tao, Meng Wang, Rongyan He, Yulong Han, Guy M. Genin, Tian Jian Lu, Feng Xu
Summary: The balance between stress and adhesion plays a crucial role in governing the behaviors of adherent cells, such as cell migration. In certain microenvironments, such as tumor, variations in hydrostatic pressure can significantly impact cell volume and adhesion, which in turn affects cell behavior.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Xun Xiong, Qinglei Zeng, Yonghuan Wang, Ying Li
Summary: In this work, the authors investigate the possibility of enhancing the resistance to crack growth in brittle materials through microstructure design. They establish a computational framework to simulate crack propagation and characterize fracture energy. The effects of different types of voids on toughening mechanisms are explored, and the critical conditions for embrittlement-toughening transition are identified. The study also discusses the difference between void toughening in brittle and ductile materials, and extends the toughening strategy to nacre-like materials.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Huan Wang, Yong-Quan Liu, Jiu-Tao Hang, Guang-Kui Xu, Xi-Qiao Feng
Summary: This study establishes a cytoarchitectural model to accurately capture the buckling and postbuckling behaviors of epithelia under fast compression. The stress evolution of epithelia is divided into three stages: loading, phase transition, and stress recovery. The postbuckling process is governed by the active tension generated by the actomyosin network. The study also proposes a minimal model that predicts the flattening time and stress recovery extent as functions of applied strain or strain rate, in agreement with simulations and experiments.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Lei Liu, Hao Liu, Yuming He, Dabiao Liu
Summary: This study investigates the mechanics and topologically complex morphologies of twisted rubber filaments using a combination of experiment and finite strain theory. A finite strain theory for hyperelastic filaments under combined tension, bending, and torsion has been established, and an experimental and theoretical morphological phase diagram has been constructed. The results accurately determine the configuration and critical points of phase transitions, and the theoretical predictions agree closely with the measurements.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Abhishek Painuly, Kunnath Ranjith, Avinash Gupta
Summary: This paper analyzes the interfacial waves caused by frictional slipping and studies their dispersion relation and wave modes. By studying the slip waves in a geophysical model, the surface wave dispersion phenomenon is explored, and an alternative explanation is proposed.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Houlin Xu, Joshua Vievering, Hoang T. Nguyen, Yupeng Zhang, Jia-Liang Le, Zdenek P. Bazant
Summary: Motivated by the extraordinary strength of nacre, this study investigated the probabilistic distribution of fishnet strength using Monte Carlo simulations and found that previous analytical solutions are not applicable for fishnets with a large number of links. By approximating large-scale fishnets as a continuum with cracks or holes, the study revealed that the strength distribution follows the Weibull distribution. This new model has significance for optimizing the strength-weight ratio in printed material structures.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Souhayl Sadik, Arash Yavari
Summary: This paper revisits the mathematical foundations of nonlinear viscoelasticity and studies the geometry of viscoelastic deformations. It discusses the decomposition of the deformation gradient into elastic and viscous distortions and concludes that the viscous distortion can only be a two-point tensor. The governing equations of nonlinear viscoelasticity are derived and the constitutive and kinetic equations for various types of viscoelastic solids are discussed.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Wen Cheng, Hongkuan Zhang, Yu Wei, Kun Wang, Gengkai Hu
Summary: In this study, we propose a phenomenon similar to Thouless pumping for a continuous in-plane elastic system, enabling topological transport of elastic waves through spatial modulation of material elasticity. By incorporating specific lattice microstructures, termed pentamode materials, precise and robust control over elastic wave propagation is achieved.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Linda Werneck, Mertcan Han, Erdost Yildiz, Marc-Andre Keip, Metin Sitti, Michael Ortiz
Summary: We have developed a simple model that describes the ionic current through neuronal membranes by considering the membrane potential and extracellular ion concentration. The model combines a simplified Poisson-Nernst-Planck model of ion transport through individual ion channels with channel activation functions calibrated from experimental data. The calibrated model accounts for the transport of calcium, sodium, potassium, and chloride and shows remarkable agreement with experimentally measured current-voltage curves for human neural cells.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)