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New Strengthening Techniques with FRP Laminates and Interfacial Fracture Theories Hong Yuan1,Zhishen Wu2 (1.Ph. D., Department of Urban and Civil Engineering, Ibaraki University (Nakanarusawa... fracture energy; FRP; elastic laminate; structure strengthening; fracture theory; [全文内容正在添加中] ......
The Ductile to Brittle Transition Behavior of the Modified 9Cr-1Mo Steel and Its Laser Welds R.K.Shiue1,C.Chen2,H.C.Wu2 (1.Department of Materials Science and Engineering, Dong Hwa University, Hualien 974, China Taiwan;2.Department of Materials Science and Engineering, Taiwan University, Taipei 106, China Taiwan) 摘要:The ductile to brittle transition temperature (DBTT) of the modified 9Cr-1Mo......
, 1973, 10(6): 713-726. [24] STACEY T R. A simple extension strain criterion for fracture of brittle rock[J]. International Journal of Rock Mechanics & Mining Sciences & Geomechanics Abstracts...的张拉破坏过程,剥落破坏岩板平行于围岩边界面[4],目前已有的研究成果通常称此类破坏为脆性破坏(Brittle failure)[5],国内部分学者直接根据该类破坏的表现形式称之为板裂破坏[4,6].从破坏形态来看,高应力硬岩脆性破坏通常导致地下隧洞或巷道边壁围岩最大主应力处形成V形槽(V-shaped notches),而对硬岩矿柱来说,则会导致其成为沙漏形.从破坏强度来看,则表现出一种更值得岩......
Effects of V and Al on Microstructure and Room Temperature Fracture Toughness of Nb-Si In-situ Composites () 摘要:The effect of alloying elements V and Al on microstructure and room temperature fracture toughness of an experimental Nb-Si in-situ composite was investigated. The Nb-Si alloys with different amount of V and Al were prepared by non-consumable arc-melting furnace. The experimental......
for welded joints was brittle in its original state, while it was transformed to a ductile fracture after LHT. The tendencies of hydrogen-induced corrosion were reduced, and the stress corrosion sensitivity...Effects of laser heat treatment on the fracture morphologies of X80 pipeline steel welded joints by stress corrosionDe-jun Kong,Cun-dong YeCollege of Mechanical Engineering, Changzhou University摘 要......
Characteristics of machined surface controlled by cutting tools and conditions in machining of brittle material Yong-Woo KIM1, Soo-Chang CHOI1, Jeung-Woo PARK2, Deug-Woo LEE3 1...; Abstract: One of the ultra-precision machining methods was adapted for brittle......
Mechanism of high-temperature oxidation effects in fatigue crack propagation and fracture mode for FGH97 superalloyChao Xu,Zhi-Hao Yao,Jian-Xin Dong,Yu-Kun JiangSchool of Materials Science... experiments were conducted at 700 and 300 ℃,respectively.The results indicate that the reduction of the fatigue lifetime for FGH97 takes place when the fracture mechanism transforms from a predominantly......
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of the magnets during quenching. The fracture is brittle cleavage fracture. The difference (Δa) of the expansion coefficient reaches the maximum value at 800-850 ℃. So, various quenching processes... in different directions Fig.3 shows the fracture micrograph of the ring magnets. It can be seen that the fracture is brittle cleavage fracture. The fracture surface shows the river pattern and cleavage......