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Ikumu Watanabe
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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
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
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
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
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
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
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
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
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 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
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Creative Commons BY Attribution 4.0 International
24
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Author
Ikumu Watanabe
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Ta-Te Chen
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Kenta Goto
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