Shotaro HARA
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View article: Correlation between microstructure and Young’s modulus of porous ceramics using three-dimensional mesoscale analysis and FIB-SEM reconstruction method
Correlation between microstructure and Young’s modulus of porous ceramics using three-dimensional mesoscale analysis and FIB-SEM reconstruction method Open
One of the engineering challenges in developing more reliable electrodes in solid oxide fuel cells is to reduce residual stresses generated during electrode fabrication. The Young's modulus of porous ceramic materials employed in the elect…
View article: Production and characterization of anisotropic porous ceramics by freeze-casting
Production and characterization of anisotropic porous ceramics by freeze-casting Open
View article: Analysis of head-to-head impact in football with human finite element model considering pre-impact cervical muscle activation
Analysis of head-to-head impact in football with human finite element model considering pre-impact cervical muscle activation Open
American football is characterized by its intense collision, which can induce serious injuries such as concussions and head trauma. Therefore, the evaluation of the safety of players is mandatory. In this study, we have developed a new fin…
View article: Evaluation of the influence of heterogeneity of initial ceramic matter on the microstructure and mechanical properties of sintered ceramics
Evaluation of the influence of heterogeneity of initial ceramic matter on the microstructure and mechanical properties of sintered ceramics Open
View article: Generation of 3D porous images with different porosities using deep learning technology
Generation of 3D porous images with different porosities using deep learning technology Open
View article: Kinetic Monte Carlo (KMC) simulation of sintering of nickel oxide-yttria stabilized zirconia composites: Model, parameter calibration and validation
Kinetic Monte Carlo (KMC) simulation of sintering of nickel oxide-yttria stabilized zirconia composites: Model, parameter calibration and validation Open
This study proposes a kinetic Monte Carlo (KMC) model for the sintering of two-phase composites using nickel oxide-yttria stabilized zirconia (NiO-YSZ) as a case study. An artificial neural network (ANN) assisted method is used to calibrat…
View article: In-situ observation of sintering process of tape-cast ceramics utilizing deep learning and its application to the prediction for multilayer deformation
In-situ observation of sintering process of tape-cast ceramics utilizing deep learning and its application to the prediction for multilayer deformation Open
The co-sintering of multilayer ceramics, produced by tape casting, is a cost-effective process for manufacturing electrodes in solid oxide fuel cells (SOFCs). Hence, understanding the deformation kinetics of multilayer ceramics during co-s…
View article: Prediction of Local Stress Distribution in SOFC Electrodes using Deep Learning
Prediction of Local Stress Distribution in SOFC Electrodes using Deep Learning Open
In order to manufacture highly durable solid oxide fuel cell (SOFC) electrodes, a technique is required to accurately assess the thermal stress distribution within porous electrodes. However, the traditional numerical simulation methods, s…
View article: Correlation between microstructures and macroscopic properties of nickel/yttria-stabilized zirconia (Ni-YSZ) anodes: Meso-scale modeling and deep learning with convolutional neural networks
Correlation between microstructures and macroscopic properties of nickel/yttria-stabilized zirconia (Ni-YSZ) anodes: Meso-scale modeling and deep learning with convolutional neural networks Open
View article: Anisotropic Microstructural Evolution and Coarsening in Free Sintering and Constrained Sintering of Metal Film by Using FIB-SEM Tomography
Anisotropic Microstructural Evolution and Coarsening in Free Sintering and Constrained Sintering of Metal Film by Using FIB-SEM Tomography Open
View article: Analysis on head rotational velocity during baseball impact using finite element dummy model
Analysis on head rotational velocity during baseball impact using finite element dummy model Open
In recent years, with the increase in the number of people playing sports, the number of accidents during competitions has been on the rise. Baseball is one of the sports in which players are exposed to shocks, and dead balls to the head c…
View article: Injury analysis of crew in spacecraft launch abort system based on Hybrid III finite element model
Injury analysis of crew in spacecraft launch abort system based on Hybrid III finite element model Open
The crew safety at Launch Abort System (LAS) under the high impact load has been numerically investigated using the simplified Hybrid-III dummy model. We show that the simplified model has a good potential to reproduce the load reponse tha…
View article: Development of Fast-Human Body Finite Element Model for Injury Assessment in Football
Development of Fast-Human Body Finite Element Model for Injury Assessment in Football Open
The effect of an impact on the human body is a major concern at contact sports such as football for safe playing. In particular, regarding head injury caused by a severe impact, it is necessary to investigate its injury occurrence mechanis…
View article: Correction method of FIB-SEM three-dimensional reconstruction images and its application to quantitative evaluation of anisotropic SOFC electrode microstructures
Correction method of FIB-SEM three-dimensional reconstruction images and its application to quantitative evaluation of anisotropic SOFC electrode microstructures Open
Quantitative evaluations of the anisotropy of co-fired microstructures using FIB-SEM technique was studied using a new correction method during image processing. After the successful removal of the non-physical image distortion by means of…
View article: A Modelling Framework towards Solid Oxide Fuel Cell Electrode Microstructure Optimization
A Modelling Framework towards Solid Oxide Fuel Cell Electrode Microstructure Optimization Open
We present a modeling framework which jointly uses discrete element method, kinetic Monte Carlo method, lattice Boltzmann method and artificial neural network to predict the electrochemical performance and degradation rate of solid oxide f…
View article: The promotion of densification behavior of NiO-YSZ composite powder by adding Fe<sub>2</sub>O<sub>3</sub> aid
The promotion of densification behavior of NiO-YSZ composite powder by adding Fe<sub>2</sub>O<sub>3</sub> aid Open
View article: Sample-size-dependent surface dislocation nucleation in nanoscale crystals
Sample-size-dependent surface dislocation nucleation in nanoscale crystals Open
View article: Atomistic study of segregation and diffusion of cations near zirconia surfaces
Atomistic study of segregation and diffusion of cations near zirconia surfaces Open
View article: Investigation of SOFC Ni-YSZ anode performance change mechanism during redox cycles
Investigation of SOFC Ni-YSZ anode performance change mechanism during redox cycles Open
Mechanism of performance change in Ni-YSZ anode of solid oxide fuel cell under redox cycles was investigated by microstructure analysis and electrochemical simulation. Performance enhancement was observed just after the redox treatment, an…
View article: Reaction pathway analysis for differences in motion between C-core and Si-core partial dislocation in 3C-SiC
Reaction pathway analysis for differences in motion between C-core and Si-core partial dislocation in 3C-SiC Open
Reaction pathway analysis was carried out to investigate the activation energy barriers of Shockley partial dislocation mobility in 3C-SiC. For each partial dislocation, there are two types of dislocations according to which kind of atom, …
View article: Stall and leading-edge vortex in a centrifugal compressor with vaned diffuser
Stall and leading-edge vortex in a centrifugal compressor with vaned diffuser Open
The experimental and CFD analysis were conducted to investigate the relationship between stall and leading-edge vortex (LEV) in a centrifugal compressor with vaned diffuser. The LEV is distinct from the separating vortex of the diffuser le…
View article: 312 Development of atomistic simulation technique toward the understanding of alloy creep properties
312 Development of atomistic simulation technique toward the understanding of alloy creep properties Open