Index Catalog // MDR

Reprogrammable flexible mechanical metamaterials

Description/Abstract:: Mechanical metamaterials are artificial structures with structure-dependent properties. They often harness zero-energy deformation modes....
Keyword:: Buckling, Imperfection, Mechanical metamaterials, Negative Poisson’s ratios, Shape-memory polymers, and Soft robotics
Resource Type:: Article
Author:: Xiaoyang Zheng, Koichiro Uto, Wei-Hsun Hu, Ta-Te Chen, Masanobu Naito, and Ikumu Watanabe
Date Uploaded:: 28/02/2023

Characterization of the Strain-Rate-Dependent Plasticity of Alloys Using Instrumented Indentation Tests

Description/Abstract:: Instrumented indentation tests are an efficient approach to characterize stress--strain curves instead of tensile or compression tests an...
Keyword:: finite elements, instrumented indentation test, mechanical testing, and strain-rate-dependent plasticity
Resource Type:: Article
Author:: Ta-Te Chen, Ikumu Watanabe, and Tatsuya Funazuka
Date Uploaded:: 28/02/2023

A mathematically defined 3D auxetic metamaterial with tunable mechanical and conduction properties

Description/Abstract:: An auxetic metamaterial is a type of mechanical metamaterial that has negative Poisson's ratio. Most auxetic metamaterials are truss-base...
Keyword:: 3D printing, Electroless plating, Metamaterial, Minimal surface, and Negative Poisson’s ratio
Resource Type:: Article
Author:: Xiaoyang Zheng, Xiaofeng Guo, and Ikumu Watanabe
Date Uploaded:: 28/02/2023

Thermal stability investigation for Ohmic contact properties of Pt, Au, and Pd electrodes on the same hydrogen-terminated diamond

Description/Abstract:: Here, thermal stabilities for Ohmic contact properties of Pt, Au, and Pd on the same hydrogen-terminated diamond (H-diamond) epitaxial la...
Keyword:: thermal stabilities for Ohmic contact properties
Resource Type:: Article
Author:: Xiaolu Yuan, Jiangwei Liu, Siwu Shao, Jinlong Liu, Junjun Wei, Bo Da, Chengming Li, and Yasuo Koide
Date Uploaded:: 28/02/2023

Tensile deformation behavior of TRIP-aided bainitic ferrite steel in the post-necking strain region

Description/Abstract:: This study validated the methods for the evaluation of stress triaxiality using finite element (FE) simulations. The FE simulations traci...
Keyword:: Advanced high-strength steel, finite element simulation, large strain, small round-bar tensile test, stress-triaxiality, and synchrotron X-ray diffraction
Resource Type:: Article
Author:: Takashi Matsuno, Tomohiko Hojo, Ikumu Watanabe, Ayumi Shiro, Takahisa Shobu, and Kentaro Kajiwara
Date Uploaded:: 28/02/2023

Origin of phase stability in Fe with long-period stacking order as an intermediate phase in cyclic γ−ε martensitic transformation

Description/Abstract:: A class of Fe-Mn-Si based alloys was found to exhibit a reversible martensitic transformation between the gamma (fcc) and epsilon (hcp) p...
Resource Type:: Article
Author:: Takao Tsumuraya, Ikumu Watanabe, and Takahiro Sawaguchi
Date Uploaded:: 28/02/2023

Effect of Punch Surface Microtexture on the Microextrudability of AA6063 Micro Backward Extrusion

Description/Abstract:: To apply conventional forming processes to microscale processing, the influence of size effects caused by material properties and frictio...
Keyword:: aluminum alloy, microextrusion, microtexture, size effect, and tribology
Resource Type:: Article
Author:: Tatsuya Funazuka, Kuniaki Dohda, Tomomi Shiratori, Syunsuke Horiuchi, and Ikumu Watanabe
Date Uploaded:: 28/02/2023

Controllable inverse design of auxetic metamaterials using deep learning

Description/Abstract:: As typical mechanical metamaterials with negative Poisson's ratios, auxetic metamaterials exhibit counterintuitive auxetic behaviors tha...
Keyword:: Additive manufacturing, Generative adversarial network, Metamaterial, Negative Poisson’s ratio, and Voronoi tessellation
Resource Type:: Article
Author:: Xiaoyang Zheng, Ta-Te Chen, Xiaofeng Guo, Sadaki Samitsu, and Ikumu Watanabe
Date Uploaded:: 28/02/2023

Numerical calculation and finite element analysis for anisotropic elastic properties of carbon fibers: Dependence of integration subinterval and mesh size on indentation-derived elastic modulus

Description/Abstract:: The elastic modulus measured by indentation of carbon fibers with various anisotropic elasticity is calculated by two numerical approache...
Keyword:: Vlassak–Nix model, anisotropic elasticity, finite element method, indentation, and numerical integration
Resource Type:: Article
Author:: Kenta Goto, Kimiyoshi Naito, Keiichi Shirasu, and Ikumu Watanabe
Date Uploaded:: 28/02/2023

Virtual substrate method for nanomaterials characterization

Description/Abstract:: Characterization techniques available for bulk or thin-film solid-state materials have been extended to substrate-supported nanomaterials...
Keyword:: Virtual substrate method
Resource Type:: Article
Author:: Bo Da, Jiangwei Liu, Mahito Yamamoto, Yoshihiro Ueda, Kazuyuki Watanabe, Nguyen Thanh Cuong, Songlin Li, Kazuhito Tsukagoshi, Hideki Yoshikawa, Hideo Iwai, Shigeo Tanuma, Hongxuan Guo, Zhaoshun Gao, Xia Sun, and Zejun Ding
Date Uploaded:: 28/02/2023

Reprogrammable flexible mechanical metamaterials

Characterization of the Strain-Rate-Dependent Plasticity of Alloys Using Instrumented Indentation Tests

A mathematically defined 3D auxetic metamaterial with tunable mechanical and conduction properties

Thermal stability investigation for Ohmic contact properties of Pt, Au, and Pd electrodes on the same hydrogen-terminated diamond

Tensile deformation behavior of TRIP-aided bainitic ferrite steel in the post-necking strain region

Origin of phase stability in Fe with long-period stacking order as an intermediate phase in cyclic γ−ε martensitic transformation

Effect of Punch Surface Microtexture on the Microextrudability of AA6063 Micro Backward Extrusion

Controllable inverse design of auxetic metamaterials using deep learning

Numerical calculation and finite element analysis for anisotropic elastic properties of carbon fibers: Dependence of integration subinterval and mesh size on indentation-derived elastic modulus

Virtual substrate method for nanomaterials characterization

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