A5071273206- Innovations in Concrete and Construction Materials
- Innovative concrete reinforcement materials
- Structural Behavior of Reinforced Concrete
- Additive Manufacturing and 3D Printing Technologies
- BIM and Construction Integration
- Aluminum Alloys Composites Properties
- Metallurgy and Material Forming
- Advanced Condensed Matter Physics
- Aluminum Alloy Microstructure Properties
- Acoustic Wave Resonator Technologies
- Magnetic and transport properties of perovskites and related materials
- Topology Optimization in Engineering
- Structural Load-Bearing Analysis
- Physics of Superconductivity and Magnetism
- Composite Material Mechanics
- Structural Response to Dynamic Loads
- Advanced ceramic materials synthesis
- Aerosol Filtration and Electrostatic Precipitation
- 3D Surveying and Cultural Heritage
- Endodontics and Root Canal Treatments
- Biopolymer Synthesis and Applications
- Virus-based gene therapy research
- Laser and Thermal Forming Techniques
- Radiative Heat Transfer Studies
- Advanced Radiotherapy Techniques
Shimizu (Japan)
2011-2025
Kurume Institute of Technology
2020-2025
Nagoya Institute of Technology
2018
Kyushu Institute of Technology
2008-2013
Okayama University
1989
Incorporating reinforcement into the practice of digital concrete construction, often called 3D-concrete-printing, is a prerequisite for wide-ranging, structural applications this new technology. Strain-Hardening Cement-based Composites (SHCC) offer one possible solution to challenge. In work, printable SHCC were developed and tested. The composites could be extruded through nozzle 3D-printer so that continuous filaments deposited, upon other, build lab-scaled wall specimens without...
To verify whether the Mott insulator Ca2RuO4 can be switched by applying electric-field alone, regardless of current flow, we employ metallisation using electric double-layer gating (EDLG). The resistance change due to EDLG occurs only when positive gate-voltage above +3 V is applied. amplitude reduction, reaching ~97% initial value, difficult interpret as surface and likely related structural in bulk.
ABSTRACT Advances in 3D‐printing technology have enabled the fabrication of periodic microstructures that exhibit characteristic mechanical performances. In response, multiscale topology optimization, which finds optimal design microstructure for macrostructure geometry and performance requirements, has become a hot topic field structural optimization. While basic optimization framework based on homogenization theory spanning macro microscales is available, it computationally expensive not...
Tensile fracture of fiber reinforced cement-based composites (FRCC) with rebar was investigated via a mesoscale analysis using discretized short fibers. Herein, the effects volume fraction, steel reinforcement ratio, FRCC–rebar bond characteristics, and distribution on tensile behavior were investigated. In some cases, localized crack observed in post-yield range rebar. The localization mechanism numerically explained then inhibited by focusing bridging forces fibers effectiveness enhancing...
本論文では,コンクリート分野の V&V(Verification and Validation),特に Validation に向けて,実験結果の再現性に焦点を当てた実験を実施した.具体的には,所有する試験機の異なる 5 つの研究機関において,同条件の実験を一斉に実施することにより,完全に統一することのできない載荷条件や拘束条件のわずかな違いによって,実験結果がどの程度影響を受けるのかについて比較検討した.曲げ破壊型およびせん断破壊型の RC はりを対象とし,それぞれの機関で得られた荷重-変位関係とひび割れ分布から,境界条件による影響の受けやすさ,荷重-変位関係とひび割れ性状との関連性について考察した.また,計算モデルの の視点から,数値シミュレーションによる実験結果の再現性についても論じた.
<p>This paper presents flexural analysis of PET (PolyEthylene Terephthalate) fiber reinforced concrete using 3-D meso-scale to verify reinforcement mechanisms in fiber. In this proposed model, fibers with a specific length and diameter are distributed as discrete entities within specimen. work, it has been clarified that the model can adequately simulate load- displacement relations obtained from tests concrete. This also numerically investigations order assess effects strength on...
The low pressure die casting machine has been used in industries because of its low-cost and high efficiency precision forming technique. In the process is that permanent filling systems are placed over furnace containing molten alloy. cavity obtained by forcing metal, means a pressurized gas, to rise into ceramic tube, which connects furnace. ceramics called stalk, temperature resistance corrosion resistance. However, attention should be paid thermal stress when tube dipped metal. It...
本研究では，鉄筋補強した繊維補強セメント系複合材料の引張破壊を，繊維1本1本をモデル化した解析手法を用いて検証した．ひずみ軟化型とひずみ硬化型の繊維補強セメント系複合材料を対象に，繊維の混入率，鉄筋比，鉄筋－マトリクス間の付着特性，ならびに繊維の分布状態を変動させた解析を行い，引張破壊挙動を検証した結果，各パラメータの組合せによっては鉄筋降伏後にひび割れが局所化して進展する場合があることを確認した．そして，そのメカニズムとそれを抑制する方策を，架橋力に着目することによって明らかにした．ひずみ硬化型の材料においては，繊維分布のばらつきに伴う材料不均一性によって力学特性が低下した場合でも，鉄筋との併用により終局ひずみを向上できることを解析から提示した．
Low pressure die casting is defined as a net shape technology in which the molten metal injected at high speeds and into metallic die. The low process plays an increasingly important role foundry industry low-cost high-efficiency precision forming technique. In that permanent filling systems are placed over furnace containing alloy. of cavity obtained by forcing metal, means pressurized gas, to rise ceramic tube having protuberance, connects furnace. ceramics tube, called stalk, has...
本研究では，離散化した合成短繊維，マトリクスおよび両者の界面をモデル化した3次元メゾスケール解析手法を開発し，2種類のひずみ硬化型モルタルの引張破壊解析を実施した．短繊維，マトリクスおよび両者の界面に適切な材料パラメータを導入することで，比較的容易に引張試験時の応答が解析できることを明らかにした．さらに，マトリクス強度，破壊エネルギー，繊維の分布に関するパラメトリック解析により，擬似ひずみ硬化挙動や複数微細ひび割れの形成メカニズムに関する考察を行うとともに，高精度化の可能性を示した．
Low pressure die casting is defined as a net shape technology in which the molten metal injected at high speeds and into metallic die. The low process plays an increasingly important role foundry industry low-cost high-efficiency precision forming technique. In that permanent filling systems are placed over furnace containing alloy. of cavity obtained by forcing metal, means pressurized gas, to rise ceramic tube having protuberance, connects furnace. ceramics tube, called stalk, has...