Singh, Himanshu; Ahmed, Arif Sheikh; Melandsø, Frank; Habib, Anowarul (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-06)
A point contact/Coulomb coupling technique is generally used for visualizing the ultrasonic waves in Lead
Zirconate Titanate (PZT) ceramics. The point contact and delta pulse excitation produce a broadband frequency
spectrum and wide directional wave vector. In ultrasonic, the signal is corrupted with several types of
noises such as speckle, Gaussian, Poisson, and salt and pepper noise. Consequently, ...