supported by the National Natural Science Foundation of China(Grant Nos.42030103,42274157,41974119);the Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology(Grant No.2021QNLM020001-6);the Natural Science Foundation of Shangdong Province(Grant No.ZR2022MD092)。
Reflection and transmission(R/T)responses characterize the propagation and energy distribution of incident and reflected waves on both sides of an interface which is crucial for imaging,amplitude variation with offset...
Supported by the National Natural Science Foundation of China under Grant Nos 10474113 and 10234060.
We present an ultrasonic method for determining the thickness of a composite consisting of a soft thin film attached to a hard plate substrate, by resonance spectra in the low frequency region, The interrogating waves...