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Ikumu Watanabe
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Relationship Extraction with Weakly Supervised Learning Based on Process-Structure-Property-Performance Reciprocity
Description/Abstract:
We developed a computer aided material design system that extracts relationships from natural language texts in weakly labeled data. We b...
Keyword:
Natural language processing
,
knowledge extraction
,
materials informatics
,
relation extraction
, and
weakly supervised learning
Resource Type:
Article
Author:
Takeshi Onishi
,
Takuya Kadohira
, and
Ikumu Watanabe
Date Uploaded:
17/02/2023
Date Modified:
22/03/2024
Effect of Punch Surface Grooves on Microformability of AA6063 Backward Microextrusion
Description/Abstract:
In order to apply conventional forming processes at the micro scale, the size effects caused by material properties and frictional effect...
Keyword:
aluminum alloy
,
grain size
,
microextrusion
,
microtexture
, and
size effect
Resource Type:
Article
Author:
Tatsuya Funazuka
,
Kuniaki Dohda
,
Tomomi Shiratori
,
Ryo Hiramiya
, and
Ikumu Watanabe
Date Uploaded:
28/02/2023
Deep neural network approach to estimate biaxial stress-strain curves of sheet metals
Description/Abstract:
Multiaxial material testing is used to evaluate plastic deformation behavior of sheet metals in multiaxial stress states. A constitutive ...
Keyword:
Aluminum alloy sheets
,
Deep neural network
,
Material modeling
, and
Multiaxial material testing
Resource Type:
Article
Author:
Akinori Yamanaka
,
Ryunosuke Kamijyo
,
Kohta Koenuma
,
Ikumu Watanabe
, and
Toshihiko Kuwabara
Date Uploaded:
28/02/2023
Numerical Estimation of Frictional Effects in Equal Channel Angular Extrusion
Description/Abstract:
The purpose of this study is to numerically estimate the friction coefficient for equal channel angular extrusion (ECAE) with and without...
Keyword:
equal channel angular extrusion
,
finite element analysis
, and
friction model
Resource Type:
Article
Author:
Vinicius Aguiar de Souza
,
Ikumu Watanabe
, and
Akira Yanagida
Date Uploaded:
28/02/2023
Multiscale characterization of a polycrystalline aggregate subjected to severe plastic deformation with the finite element method
Description/Abstract:
The heterogeneous deformation of a polycrystalline aggregate under severe plastic deformation was reproduced with finite element analysis...
Keyword:
crystal plasticity
,
finite element analysis
,
severe plastic deformation
, and
texture
Resource Type:
Article
Author:
Ikumu Watanabe
and
Daigo Setoyama
Date Uploaded:
28/02/2023
Deep-learning-based inverse design of three-dimensional architected cellular materials with the target porosity and stiffness using voxelized Voronoi lattices
Description/Abstract:
Architected cellular materials are a class of artificial materials with cellular architecture-dependent properties. Typically, designing ...
Keyword:
Architected materials
,
Voronoi lattices
,
finite element simulation
,
generative adversarial network
,
inverse design
, and
mechanical properties
Resource Type:
Article
Author:
Xiaoyang Zheng
,
Ta-Te Chen
,
Xiaoyu Jiang
,
Masanobu Naito
, 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
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
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
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
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
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
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
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
Data-driven estimation of plastic properties of alloys using neighboring indentation test
Description/Abstract:
A data-driven estimation method for the plastic properties of alloys was proposed using indentations at neighboring positions. An instrum...
Keyword:
Elastic-plastic material
,
finite element method
,
instrumented indentation test
,
material database
,
mechanical testing
, and
response surface
Resource Type:
Article
Author:
Ta-Te Chen
,
Ikumu Watanabe
,
Dayuan Liu
, and
Kenta Goto
Date Uploaded:
28/02/2023
Three-Dimensionally Gradient and Periodic Harmonic Structure for High Performance Advanced Structural Materials
Description/Abstract:
Creation of a unique “Harmonic Structure (HS)” with controlled bimodal grain size distribution in metals and alloys is a new material de...
Keyword:
bimodal Titanium
,
harmonic structure
,
lightweight materials
,
powder metallurgy
,
severe plastic deformation
, and
strengthening
Resource Type:
Article
Author:
Sanjay Kumar Vajpai
,
Han Yu
,
Mie Ota
,
Ikumu Watanabe
,
Guy Dirras
, and
Kei Ameyama
Date Uploaded:
28/02/2023
Data-driven estimation of plastic properties in work-hardening model combining power-law and linear hardening using instrumented indentation test
Description/Abstract:
In this study, a method for determining the additional material constant in a modified work-hardening model combining power-law and linea...
Keyword:
Elastic-plastic material
,
finite element method
,
instrumented indentation test
,
material database
, and
response surface
Resource Type:
Article
Author:
Ta-Te Chen
and
Ikumu Watanabe
Date Uploaded:
28/02/2023
Analysis of Nano-hardness Distribution Near the Ferrite-martensite Interface in a Dual Phase Steel with Factorization of Its Scattering Behavior
Description/Abstract:
We investigated the local preliminary hardening of ferrite near the ferrite–martensite interfaces in a dual-phase (DP) steel. Geometrical...
Keyword:
dual phase steel
,
grains and interfaces
,
nanoindentation
,
scattering
, and
serial sectioning
Resource Type:
Article
Author:
Reon Ando
,
Takashi Matsuno
,
Tomoko Matsuda
,
Norio Yamashita
,
Hideo Yokota
,
Kenta Goto
, and
Ikumu Watanabe
Date Uploaded:
28/02/2023
Anisotropic Multiscale Modelling in SAE-AISI 1524 Gas Tungsten Arc Welded Joints
Description/Abstract:
A transient non-linear multiscale finite element heat flow-mechanical model to determine micro residual stresses (type III) and micro pla...
Keyword:
GTA welding
,
anisotropy
,
digital microstructure code
,
micro residual stresses
,
sub-modeling
, and
thermal gradients
Resource Type:
Article
Author:
Edison A. Bonifaz
and
Ikumu Watanabe
Date Uploaded:
28/02/2023
Inverse estimation approach for elastoplastic properties using the load-displacement curve and pile-up topography of a single Berkovich indentation
Description/Abstract:
An approach for the inverse estimation of the elastoplastic properties from a single indentation with a Berkovich indenter was developed....
Keyword:
Elastic-plastic material
,
Finite elements
,
Indentation
,
Inverse analysis
, and
Mechanical testing
Resource Type:
Article
Author:
Kenta Goto
,
Ikumu Watanabe
, and
Takahito Ohmura
Date Uploaded:
02/03/2023
Stress mapping reveals extrinsic toughening of brittle carbon fiber in polymer matrix
Description/Abstract:
We conducted an in situ study on CFRP fracturing process using atomic-force-microscopybased stress-sensitive indentation. Tensile stress ...
Keyword:
AFM
,
CFRP
,
Stress
, and
indentation
Resource Type:
Article
Author:
Hongxin Wang
,
Han Zhang
,
Kenta Goto
,
Ikumu Watanabe
,
Hideaki Kitazawa
,
Masamichi Kawai
,
Hiroaki Mamiya
, and
Daisuke Fujita
Date Uploaded:
02/03/2023
Estimation of Texture-Dependent Stress-Strain Curve and <i>r</i>-Value of Aluminum Alloy Sheet Using Deep Learning
Description/Abstract:
Deformation of an aluminum alloy sheet which is affected by its underlying crystallographic texture has been widely studied using crystal...
Keyword:
crystallite orientation
,
deep learning
,
flow stress
,
numerical analysis
,
tension test
, and
texture
Resource Type:
Article
Author:
Kohta Koenuma
,
Akinori Yamanaka
,
Ikumu Watanabe
, and
Toshihiko Kuwabara
Date Uploaded:
02/03/2023
Stress dependence of indentation modulus for carbon fiber in polymer composite
Description/Abstract:
Elastic modulus measured through atomic force microscopy (AFM)-based indentation on single carbon fiber (CF) is found with dependence on ...
Keyword:
Atomic force microscopy
and
indentation
Resource Type:
Article
Author:
Hongxin Wang
,
Han Zhang
,
Daiming Tang
,
Kenta Goto
,
Ikumu Watanabe
,
Hideaki Kitazawa
,
Masamichi Kawai
,
Hiroaki Mamiya
, and
Daisuke Fujita
Date Uploaded:
02/03/2023
Topological alternation from structurally adaptable to mechanically stable crosslinked polymer
Description/Abstract:
Stimuli-responsive polymers with complicated but controllable shape-morphing behaviors are critically desirable in several engineering f...
Keyword:
Covalent adaptable network polymer
,
creep deformation
,
shape-morphing polymer material
, and
topological alternation
Resource Type:
Article
Author:
Wei-Hsun Hu
,
Ta-Te Chen
,
Ryo Tamura
,
Kei Terayama
,
Siqian Wang
,
Ikumu Watanabe
, and
Masanobu Naito
Date Uploaded:
02/03/2023
Multiscale analysis of mechanical behavior of multilayer steel structures fabricated by wire and arc additive manufacturing
Description/Abstract:
The mechanical behavior of multilayer steel structures fabricated via wire and arc additive manufacturing (WAAM) has been investigated fr...
Keyword:
Wire and arc additive manufacturing
,
finite element method
,
instrumented indentation
,
multiscale characterization
, and
stainless steel
Resource Type:
Article
Author:
Ikumu Watanabe
,
Zhengzhong Sun
,
Houichi Kitano
, and
Kenta Goto
Date Uploaded:
02/03/2023
Tutorial for conditional generative adversarial network
Description/Abstract:
This tutorial aims to give an introduction of how to use a deep generative model, conditional generative adversarial network (CGAN). The ...
Keyword:
Deep learning; Generative adversarial network; Inverse design; Microstructure; Mechanical metamaterial
Resource Type:
Software
Data origin:
informatics and data science
Author:
Xiaoyang Zheng
,
Ta-Te Chen
,
Xiaofeng Guo
,
Sadaki Samitsu
, and
Ikumu Watanabe
Journal:
Materials & Design
Date Uploaded:
21/03/2023
Generating 3D voxelized architected materials using 3D conditional generative adversarial network
Description/Abstract:
This tutorial aims to give an introduction of how to use a deep generative model, 3D conditional generative adversarial network (3D-CGAN)...
Keyword:
Deep learning; Generative adversarial network; Inverse design; 3D shape; Microstructure; Mechanical metamaterial
Resource Type:
Software
Data origin:
informatics and data sciences
Author:
Xiaoyang Zheng
and
Ikumu Watanabe
Journal:
Science and Technology of Advanced Materials
Date Uploaded:
14/09/2023
Metamaterial Gallery
Description/Abstract:
Nine metamaterial models
Keyword:
3D geometry
,
Mechanical metamaterial
,
Model
, and
Negative Poisson's ratio
Resource Type:
Dataset
Data origin:
informatics and data sciences
Author:
Xiaoyang Zheng
and
Ikumu Watanabe
Journal:
Materials & Design
Date Uploaded:
30/10/2023
Multi-objective topology optimization of porous microstructure in die-bonding layer of a semiconductor
Description/Abstract:
To enhance semiconductor efficiency, it is imperative to develop a die-bonding material possessing exceptional thermal conductivity and s...
Keyword:
Multi-objective topology optimization
,
finite element analysis
,
highthroughput evaluation
,
microstructure design
, and
porous microstructure
Resource Type:
Article
Author:
Jiaxin Zhou
,
Ikumu Watanabe
,
Weikang Song
,
Keita Kambayashi
, and
Ta-Te Chen
Journal:
Science and Technology of Advanced Materials: Methods
Date Uploaded:
12/04/2024
Minimal-surface-based multiphase metamaterials with highly variable stiffness
Description/Abstract:
Variable-stiffness materials have a unique ability to change their stiffness reversibly in response to external stimuli or conditions. Ho...
Keyword:
Low-melting-point alloys
,
Mechanical metamaterials
,
Phase transition
,
Shape memory
,
Triply periodic minimal surfaces
, and
Variable-stiffness materials
Resource Type:
Article
Author:
Xiaoyang Zheng
,
Ikumu Watanabe
,
Siqian Wang
,
Ta-Te Chen
, and
Masanobu Naito
Journal:
Materials & Design
Date Uploaded:
12/04/2024
Multiscale Finite Element Analysis of Yield-point Phenomenon in Ferrite–Pearlite Duplex Steels
Description/Abstract:
The yield-point phenomena in ferrite–pearlite duplex steels were investigated using multiscale computational simulations. In these multis...
Keyword:
yield-point phenomenon
Resource Type:
Article
Author:
Shinnosuke Yanagawa
and
Ikumu Watanabe
Journal:
ISIJ International
Date Uploaded:
12/04/2024
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