Capturing the shear and secondary compression wave: High frame rate ultrasound imaging in saturated foams
Abstract
We experimentally observe the shear and secondary compression wave inside soft porous water-saturated melamine foams by high frame rate ultrasound imaging. Both wave speeds are supported by the weak frame of the foam. The first and second compression waves show opposite polarity, as predicted by Biot theory. Our experiments have direct implications for medical imaging: Melamine foams exhibit a similar microstructure as lung tissue. In the future, combined shear wave and slow compression wave imaging might provide new means of distinguishing malignant and healthy pulmonary tissue.
Keywords
Cite
@article{arxiv.1907.11276,
title = {Capturing the shear and secondary compression wave: High frame rate ultrasound imaging in saturated foams},
author = {Johannes Aichele and Bruno Giammarinaro and Michael Reinwald and Goulven Le Moign and Stefan Catheline},
journal= {arXiv preprint arXiv:1907.11276},
year = {2019}
}
Comments
6 pages, 4 figures, has additional supplementary material, accepted in Physical Review Letters (PRL) on 25 July 2019: https://journals.aps.org/prl/accepted/d8073Yb2Q561ed74b02b45f3f2ce801db54da98ac