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Ikumu Watanabe
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11.
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
12.
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
13.
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
14.
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
15.
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
16.
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
17.
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
18.
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
19.
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
20.
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
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