supported by the National Natural Science Foundation of China(51575134,51175113,51105033,51205083)
According to the principle of synchronous demodulation, the modulation informa- tion in the output signal of vibro-acoustic modulation test was investigated and the nonlinear interaction of sound and vibration with th...
Acknowledgements This study was supported by National Natural Science Foundation of China (Grant No. 51105033, 50975028, 51175133 ) and State Key Laboratory of Advanced Welding and Joining.
It meets some difficulties in the case of ultrasonic phased arrays testing for the nickel-based alloy welded joint, since the ultrasound will propagate with curvilinear paths in this kind anisotropic joint. Thus, it i...