the National Natural Science Foundation of China(10234060,10574138,10474113)
The proper frequency is experimentally chosen to be the operation frequency of the electromagnetic acoustic transducer. The instantaneous amplitude, phase and frequency of the detected ultrasonic echoes from a multila...
the Natinal Natural Science Foundation of China (10234060,10134020)
In order to understand the viscoelasticity of material, this research has been conducted to study the propagation characteristics of viscoelastic Rayleigh wave theoretically. A model is presented for the pulsed laser ...
the National Natural Science Foundation of China (10234060,10574138,10474113).
The electromagnetic ultrasound is used in the detection of interfaces of the adhesive multilayer structures to solve the unstable coupling problem in ultrasonic testing by traditional piezoelectric transducers. Based ...
This work was supported by the National Natural Science Foundation of China (10234060,10574138, and 10474113)
The field of horizontally polarized ultrasonic shear wave radiated by a 2/2 piezoelectric composite normal probe was studied. The strictly analytic field solutions for two different surface forces were deduced and the...
Supported by National Natural Science Foundation of China (Grant No.10234060)
Different delay prediction algorithms have been applied in multimedia communication, among which linear prediction is attractive because of its low complexity. AR (auto regressive) algorithm is a traditional one wit...