SARACCO , G

The object of this study is to estimate the viscoelastic parameters (compressionnal velocity and the intrinsic attenuation factor Q) of lava samples in acoustic tomography experiments by the use of an asymptotic viscoacoustic diffraction tomography method developped by Ribidetti et al 2000. 2.5 D common offset ultrasonic experiments are...

In civil engineering, one of the crucial problems is the location of buried polyethylene pipes. For this type of material, electromagnetic waves are less suitable than acoustic waves (e.g. the necessity to introduce a metal cable into the pipeline making the method invasive, difficulty in differentiating between a gas pipe and a water pipe). By...