3 papers
physics.ins-det2016
Transducer finite aperture effects in sound transmission near leaky Lamb modes in elastic plates at normal incidence
Magne Aanes, Kjetil Daae Lohne, Per Lunde +1
The interaction of ultrasonic waves with fluid-embedded viscoelastic plates, pipes, and shells, have been subject to extensive theoretical and experimental studies over several dec…
physics.ins-det2016
Sound velocity measurement methods for porous sandstone. Measurements, finite element modelling, and diffraction correction
Mathias Sæther, Per Lunde, Geir Ersland
Acoustic material parameters of gas hydrate bearing porous rocks are important for evaluation of methods to exploit the vast methane gas resources present in the earth's subsurface…
physics.ins-det2016
Magnitude and phase reciprocity calibration of ultrasonic piezoelectric disk in air
Kenneth K. Andersen, Per Lunde, Jan Kocbach
A modified conventional three-transducer reciprocity calibration method is used to measure the magnitude and phase responses of the transmitting voltage response and the free-field…