Makoto Yoshida
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View article: Força magnética num condutor retilíneo percorrido por uma corrente elétrica: uma verificação experimental
Força magnética num condutor retilíneo percorrido por uma corrente elétrica: uma verificação experimental Open
Utilizando uma balança digital e ímãs de neodímio, mostramos que a força magnética Fm que atua em um condutor retilíneo de comprimento l imerso em um campo magnético uniforme B e transportando uma corrente i é proporcional a B, a i e a l e…
View article: Study on Reinforcing Effect of Gabion Wall Facing with Reinforcing Materials during Flooding Using Open-Channel Experiments
Study on Reinforcing Effect of Gabion Wall Facing with Reinforcing Materials during Flooding Using Open-Channel Experiments Open
Bridges are important social infrastructure, and in particular, the stability of the back-fill behind the abutment determines the safety of the entire bridge. Recent climate change has increased the risk of flooding, and damage caused by b…
View article: Novel Control Factor for Tensile Strength and Solidification Cracking in Partially Solidified Al–Mn–Cu Alloy Based on Campbell’s Model with Fe-Rich Intermetallic Compounds
Novel Control Factor for Tensile Strength and Solidification Cracking in Partially Solidified Al–Mn–Cu Alloy Based on Campbell’s Model with Fe-Rich Intermetallic Compounds Open
In this study, the effect of the Fe-rich intermetallic compound phases (IMC) on the solidification cracking susceptibility (Hot Tearing Susceptibility, HTS ) of the Al–Mn–Cu alloy and the associated controlling factors were investigated. U…
View article: Experimental Construction and Validation of Revised Drucker–Prager Model Using Finite Element Method for Moisture Condensation Zone in Bentonite-Bonded Silica Sand
Experimental Construction and Validation of Revised Drucker–Prager Model Using Finite Element Method for Moisture Condensation Zone in Bentonite-Bonded Silica Sand Open
For predicting casting deformation by FEM (finite element method) thermal stress analysis, this paper experimentally constructed and validated the Drucker–Prager (DP) model and its revised model (RDP) for the condensation zone of bentonite…
View article: 3D NUMERICAL SIMULATION OF FLOWS AROUND MONOPILE TYPE FOUNDATION OF OFFSHORE WIND TURBINE WITH UNDERWATER SESMIC CONTROL PANEL
3D NUMERICAL SIMULATION OF FLOWS AROUND MONOPILE TYPE FOUNDATION OF OFFSHORE WIND TURBINE WITH UNDERWATER SESMIC CONTROL PANEL Open
View article: Teoria e construção de um gerador eletrostático simples
Teoria e construção de um gerador eletrostático simples Open
Quando se deseja obter uma diferença de potencial de algumas dezenas de milhares de volts, pode-se utilizar geradores eletrostáticos. Neste trabalho, descrevemos como construímos um gerador eletrostático simples, cujo princípio de funciona…
View article: EXPERIMENTAL STUDY ON WAVE RESISTANCE PERFORMANCE OF MONOPILE TYPE FOUNDATION OF OFFSHORE WIND TURBINE WITH UNDERWATER SESMIC CONTROL PANEL
EXPERIMENTAL STUDY ON WAVE RESISTANCE PERFORMANCE OF MONOPILE TYPE FOUNDATION OF OFFSHORE WIND TURBINE WITH UNDERWATER SESMIC CONTROL PANEL Open
View article: CONSIDERING SOIL-WATER-STRUCTURE INTERACTION AXISYMMETRIC MPM ANALYSIS OF LARGE DEFORMATION BAHAVIOR OF SOIL DURING STEEL PENETRATION
CONSIDERING SOIL-WATER-STRUCTURE INTERACTION AXISYMMETRIC MPM ANALYSIS OF LARGE DEFORMATION BAHAVIOR OF SOIL DURING STEEL PENETRATION Open
View article: BASIC STUDY ON THE APPLICATION OF GENERALIZED SCALING LAW TO MONOTONIC LOADING TESTS ON OFFSHORE WIND MONOPILE TYPE FOUNDATION
BASIC STUDY ON THE APPLICATION OF GENERALIZED SCALING LAW TO MONOTONIC LOADING TESTS ON OFFSHORE WIND MONOPILE TYPE FOUNDATION Open
View article: Influence of Sr on mechanical properties of Al-2%Si alloys during eutectic solidification
Influence of Sr on mechanical properties of Al-2%Si alloys during eutectic solidification Open
Al-Si alloys have lower hot tearing susceptibility (HTS) than other aluminum alloys. However, hot tearing occurs under certain casting conditions. It is known that the Sr addition reduces the HTS because of the enhancement of crack-healing…
View article: Clarification of the mechanism of hot tearing susceptibility reduction by Sr addition in Al-Mg-Mn-based die casting alloy using acoustic emission method
Clarification of the mechanism of hot tearing susceptibility reduction by Sr addition in Al-Mg-Mn-based die casting alloy using acoustic emission method Open
In our previous study, Al-4.5Mg-1.0Mn based alloy with addition of both Si, Sr, Ti, B and hydrogen over 0.5 ml/100 gAl was developed with around 15% of fracture elongation and low hot tearing susceptibility (HTS). It was suggested that the…
View article: Clarification of Defects in Modified Cam-Clay Model, Proposition of New Yield Criterion for Green Sand Mold, and its Experimental Validation by FEM Stress Analysis of Triaxial Compression Test
Clarification of Defects in Modified Cam-Clay Model, Proposition of New Yield Criterion for Green Sand Mold, and its Experimental Validation by FEM Stress Analysis of Triaxial Compression Test Open
View article: Evaluation of Ejection Force for Die Castings by FEM Thermal Stress Analysis with Elasto-Plastic-Creep Model
Evaluation of Ejection Force for Die Castings by FEM Thermal Stress Analysis with Elasto-Plastic-Creep Model Open
In the die design of high pressure die casting (HPDC), in order to prevent the casting from the warpage, it is essential to predict ejection force of each ejector pin before locating it. Recently, Shiga et al. revealed that their developed…
View article: Measurement of viscous properties on Al-5mass%Mg alloy in semi-solid state by tensile test with high-frequency induction heating
Measurement of viscous properties on Al-5mass%Mg alloy in semi-solid state by tensile test with high-frequency induction heating Open
To predict hot tearing during DC (direct chill) casting by thermal stress analysis, cooling rate dependence of viscous properties in semi-solid state are indispensable. However, those at cooling rates of DC casting had not been obtained in…
View article: Viscosity Properties Prediction of Semi-Solid Aluminum Alloys Using Finite Element Analysis Based on Quenched Solidified Structure, and Experimental Validation
Viscosity Properties Prediction of Semi-Solid Aluminum Alloys Using Finite Element Analysis Based on Quenched Solidified Structure, and Experimental Validation Open
For predicting hot tearing during casting process, viscosity properties and constitutive equations in the semi-solid region are required. In this research, viscosity properties of two alloys, which are Al–5 mass%Mg alloy with Ti–B grain-re…
View article: Characterization of a continuous phase transition in a chaotic system
Characterization of a continuous phase transition in a chaotic system Open
Made available in DSpace on 2020-12-12T02:49:51Z (GMT). No. of bitstreams: 0\n Previous issue date: 2020-07-01
View article: Chaotic diffusion for particles moving in a time dependent potential well
Chaotic diffusion for particles moving in a time dependent potential well Open
View article: Viscosity properties prediction of semi-solid aluminum alloys using finite element analysis based on quenched solidified structure, and experimental validation
Viscosity properties prediction of semi-solid aluminum alloys using finite element analysis based on quenched solidified structure, and experimental validation Open
For predicting hot tearing during casting process, viscosity properties and constitutive equations in the semi-solid region are required. In this research, viscosity properties of two alloys, which are Al-5mass%Mg alloy with Ti-B grain-ref…
View article: Controlling Factor for Maximum Tensile Stress and Elongation of Aluminum Alloy during Partial Solidification
Controlling Factor for Maximum Tensile Stress and Elongation of Aluminum Alloy during Partial Solidification Open
To predict hot tearing of direct chill casting ingot, both the tensile constitutive behavior and elongation of alloy are inevitable during partial solidification. For predicting both the maximum true stress σss and the elongation εelong re…
View article: Hot tearing prediction of casting via thermal stress analysis
Hot tearing prediction of casting via thermal stress analysis Open
View article: Controlling factor for maximum tensile stress and elongation of aluminum alloy during partial solidification
Controlling factor for maximum tensile stress and elongation of aluminum alloy during partial solidification Open
To predict hot tearing of direct chill casting ingot, both the tensile constitutive behavior and elongation of alloy are inevitable during partial solidification. For predicting both the maximum true stress σss and the elongation εelong re…
View article: Effect of Temperature Field and Mechanical Properties of Casting on Prediction of Hot Tearing Tendency Using FEM Thermal Stress Analysis
Effect of Temperature Field and Mechanical Properties of Casting on Prediction of Hot Tearing Tendency Using FEM Thermal Stress Analysis Open
It is known that hot tearing tendency increases with the increase in the cooling rate of casting during the solidification. As the direct control factors of the hot tearing, the cooling rate dependences of the temperature field of the cast…
View article: Dynamic Measurement of Constraining Force from Green Sand and Casting Contraction of Gray Cast Iron during Cooling
Dynamic Measurement of Constraining Force from Green Sand and Casting Contraction of Gray Cast Iron during Cooling Open
This study investigated the effects of the restraint from green sand mold for cast iron during cooling process.Gray cast iron (JIS FC300, almost identical to ASTM 45) was cast in a green sand mold, and the constraining force to the casting…
View article: Hot tearing susceptibility of aluminum and magnesium alloys during casting (Part 2)
Hot tearing susceptibility of aluminum and magnesium alloys during casting (Part 2) Open
View article: Hot tearing susceptibility of aluminum and magnesium alloys during casting (Part 1)
Hot tearing susceptibility of aluminum and magnesium alloys during casting (Part 1) Open
View article: Overview of wood decay mechanism caused by wood rotting fungi and outlook for the future of the research
Overview of wood decay mechanism caused by wood rotting fungi and outlook for the future of the research Open
View article: A Monte Carlo approach for the bouncer model
A Monte Carlo approach for the bouncer model Open
View article: Rod-like particles growing in sol–gel processing of 1:1 molar mixtures of 3-glycidoxypropyltrimethoxysilane and tetraethoxysilane
Rod-like particles growing in sol–gel processing of 1:1 molar mixtures of 3-glycidoxypropyltrimethoxysilane and tetraethoxysilane Open
The growth kinetics and the structure of organic/silica hybrids prepared from acid hydrolysis of 1:1 molar mixtures of 3-glycidoxypropyltrimethoxysilane and tetraethoxysilane were studied by small-angle X-ray scattering (SAXS) at 315, 325 …
View article: Uso de um compressor de ar para aquário como marcador de tempo em experimentos de cinemática
Uso de um compressor de ar para aquário como marcador de tempo em experimentos de cinemática Open
Neste trabalho, mostramos como construir um marcador de tempo similar àquele adotado pelo PSSC (Physical Science Study Committee) utilizando um compressor de ar para aquário e uma caneta hidrográfica. Em seguida, mostramos, também, como es…
View article: Prediction and Experimental Validation of Cooling Rate Dependence of Viscoplastic Properties in a Partially Solidified State of Al–5 mass%Mg Alloy
Prediction and Experimental Validation of Cooling Rate Dependence of Viscoplastic Properties in a Partially Solidified State of Al–5 mass%Mg Alloy Open
To predict hot tearing in direct chill (DC) casting and shape casting of aluminum alloys using thermal stress analysis, cooling rate dependence of viscoplastic properties in a partially solidified state is indispensable. Based on viscoplas…