There are two ways to join ceramics to metals: brazing and bonding. However, brazing processes are time-comsuming and energy-comsuming and is limited by the low working temperature. Generally speaking, bonding, or spe...There are two ways to join ceramics to metals: brazing and bonding. However, brazing processes are time-comsuming and energy-comsuming and is limited by the low working temperature. Generally speaking, bonding, or specifically, Diffusion Bonding performs better than brazing. Besides diffusion bonding, a more specialized technique is Field Assisted Diffusion Bonding (FADB).展开更多
A plastic ring-beam model simulating the longitudinal transition zone of submarine pipelines in the buckle propagation is presented. The nonlinear relationships between the buckle propagation pressure and the length o...A plastic ring-beam model simulating the longitudinal transition zone of submarine pipelines in the buckle propagation is presented. The nonlinear relationships between the buckle propagation pressure and the length of the transition zone and the position parameter of the longitudinal plastic hinge are derived using the energy principle. The related values are obtained by means of solving a set of nonlinear equations. The model conforms better to reality than the ring models for considering the effect of the longitudinal plastic bending of the transition zone. The computations for some stainless steel and aluminum tubes with different geometrical parameters are performed. The results obtained agree better with the experimental results than existing theoretical predictions.展开更多
文摘There are two ways to join ceramics to metals: brazing and bonding. However, brazing processes are time-comsuming and energy-comsuming and is limited by the low working temperature. Generally speaking, bonding, or specifically, Diffusion Bonding performs better than brazing. Besides diffusion bonding, a more specialized technique is Field Assisted Diffusion Bonding (FADB).
基金This project is financially supported by the National Natural Science Foundation of China
文摘A plastic ring-beam model simulating the longitudinal transition zone of submarine pipelines in the buckle propagation is presented. The nonlinear relationships between the buckle propagation pressure and the length of the transition zone and the position parameter of the longitudinal plastic hinge are derived using the energy principle. The related values are obtained by means of solving a set of nonlinear equations. The model conforms better to reality than the ring models for considering the effect of the longitudinal plastic bending of the transition zone. The computations for some stainless steel and aluminum tubes with different geometrical parameters are performed. The results obtained agree better with the experimental results than existing theoretical predictions.
