发明名称 |
Acoustic device for localized contactless measurement of elastic and dissipative non-linearities and viscoelasticity |
摘要 |
The disclosure relates to an acoustic method and device for localized, contactless, measurement of elastic and dissipative non-linearities and dynamic non-linear viscoelasticity in a medium subjected to a low-frequency acoustic stress and probed by ultrasonic pulses or wave trains. A device for measuring elastic and dissipative nonlinearities and viscoelasticity of a specimen includes an emitter for transmitting a low-frequency acoustic wave and a receiver to receive said low-frequency acoustic wave, which is capable of creating a low-frequency periodic variation of a hydrostatic pressure in the specimen; a generator to generate high-frequency ultrasonic pulses and a receiver to receive said pulses; and an analysis unit that includes a model for calculating modulations in time of flight and in amplitude of the ultrasonic pulses that are induced by the low-frequency acoustic wave passing through the specimen to quantify the elastic and dissipative non-linearities and the non-linear viscoelasticity of the specimen. |
申请公布号 |
US8616060(B2) |
申请公布日期 |
2013.12.31 |
申请号 |
US200913000128 |
申请日期 |
2009.06.23 |
申请人 |
CALLE SAMUEL;DEFONTAINE MARIELLE;REMENIERAS JEAN-PIERRE;RENAUD GUILLAUME;UNIVERSITE FRANCOIS RABELAIS DE TOURS |
发明人 |
CALLE SAMUEL;DEFONTAINE MARIELLE;REMENIERAS JEAN-PIERRE;RENAUD GUILLAUME |
分类号 |
G01N29/04;G01N29/12 |
主分类号 |
G01N29/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|