This study was supported by State Key Laboratory of Advanced Welding Production Technology and National Natural Science Foundation of China (Grant No. 50975028, 50775054).
Ultrasonic inspections on nickel-based alloy weldments meets some difficulties due to the curvilinear propagating paths will appear in both anisotropic and inhomogeneons welded joints. Thus, it is difficult to determi...
supported by the National Natural Science Foundation of China(50775054,10774158);supported by the International Joint Research Program of China(2007DFR70070).
A nonparaxial multi-Gaussian beam model based on the rectangular aperture is proposed in order to overcome the limitation of paraxial Gaussian beam model which losing accuracy in off-axis beam fields. With the method,...
supported by National Natural Science Foundation of China (Grant No. 50775054);International Joint Research Program of China (Grant No. 2007DFR70070)
In order to obtain good understanding of complicated beam propagation behaviors in nickel-based alloy weldments , ray tracing simulation is established to predict the ultrasonic beam path in a special welded structure...