A5020682458- Aluminum Alloys Composites Properties
- Advanced ceramic materials synthesis
- Metallurgy and Material Forming
- Advanced materials and composites
- Microstructure and Mechanical Properties of Steels
- Natural Fiber Reinforced Composites
- Structural mechanics and materials
- Metallurgical Processes and Thermodynamics
- Advanced Surface Polishing Techniques
- Laser and Thermal Forming Techniques
- Powder Metallurgy Techniques and Materials
- Metal Alloys Wear and Properties
Kawasaki Heavy Industries (Japan)
2021-2022
Honda (United States)
1993
The present study aims to understand the high-temperature bending fatigue behavior at stress-concentrated Y-shape junction of a component made Tyranno SA3 fiber/BN interphase/SiC matrix composite. SiC/SiC CMC was processed via hybrid technique by combining Chemical Vapor Infiltration (CVI) and Polymer Impregnation Pyrolysis (PIP) processes. Two different types tests, namely, point-load-bending-static-test point-load-bending-fatigue-test, were performed 1100 °C. point-load-bending-static test...
This research work focused on simulating different fracture modes in the high-stress concentrated region of an advanced SiC/SiC CMC component at macroscopic scale consideration increasing cost and time during experimental tests CMCs. A hybrid extended-finite-element-method (XFEM) cohesive-zone-modeling (CZM) was utilized to predict mode-I mode-II behavior, respectively. The cohesive element (CE) layers were used as fiber-tow interfaces stress-concentrated where failure supposed occur. 1st...
自然電位による鉄筋腐食状態の推定には様々な基準および提案があるが, 中性化による鉄筋腐食への適用性については必ずしも明確ではない. 本研究では, 中性化による鉄筋腐食状態を, 自然電位により推定する場合の問題点を明らかにすることを目的として, 促進中性化下の供試体を用いて実験を行った. その結果, 中性化を主因とする鉄筋腐食は, 塩害に基づき定められた既往の基準より貴な電位で始まり, その原因として鉄筋とコンクリートの界面の状態が塩害とは異なる可能性が高いこと, 中性化による場合には水セメント比やかぶりがコンクリート表面への散水による自然電位の変動に与える影響が大きいこと, 散水による自然電位の変化はコンクリート抵抗の変化との相関が高いことなどが明らかとなった.
In this study we investigated methods of forming matrices SiC/SiC composite, which have recently attracted considerable attention as high temperature structural materials that can be used in airplane engines etc. We examined ways balancing the formation dense, strong microstructures with infiltration into fibrous preforms. A process a green body was prepared by polymer and pyrolysis (PIP) processing, using slurry containing liquid precursor fine powders, densified melt (MI) processing....
When using cast-in inserts of pipes in molten metal with large melt/insert volume ratios, the pipe may suffer structural damage such as grain growth and excessive diffusion melt elements, even locally due to heat melt. In this research, air nitrogen gas cooling was applied mild steel inserted grey cast iron. Experiments showed that an adequate amount flow improves growth, decreases carburized layers, still gives good metallurgical bonding, although harms bonding. Nitrogen has a effect...