A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Wave Propagation and Attenuation in Rocks from Poroelasticity and Thermoelasticity
The formal analogy between thermoelasticity and poroelasticity is extended to attenuation-dispersion. The existence of local gradients, temperature in the first case, and fluid pressure in the second case, result in attenuation and dispersion of elastic waves. These processes are formally similar. The magnitude and the critical frequency at which they take place are, however, very different. The first one is a small effect that is expected in the Hz frequency range. The second one is a larger effect expected to be depth-dependent, and in the 10kHz frequency range for water (around 1-5 km depth), and controlled by fluid viscosity and crack aspect ratio. Both effects result of the coupling between the elastic response of the solid and a dissipative process (heat conduction or hydraulic conduction). They are not exclusive of other dissipative processes, but they exist in all cases, no matter which other effects could be superimposed.
Wave Propagation and Attenuation in Rocks from Poroelasticity and Thermoelasticity
The formal analogy between thermoelasticity and poroelasticity is extended to attenuation-dispersion. The existence of local gradients, temperature in the first case, and fluid pressure in the second case, result in attenuation and dispersion of elastic waves. These processes are formally similar. The magnitude and the critical frequency at which they take place are, however, very different. The first one is a small effect that is expected in the Hz frequency range. The second one is a larger effect expected to be depth-dependent, and in the 10kHz frequency range for water (around 1-5 km depth), and controlled by fluid viscosity and crack aspect ratio. Both effects result of the coupling between the elastic response of the solid and a dissipative process (heat conduction or hydraulic conduction). They are not exclusive of other dissipative processes, but they exist in all cases, no matter which other effects could be superimposed.
Wave Propagation and Attenuation in Rocks from Poroelasticity and Thermoelasticity
Gueguen, Y. (author)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 2391-2394
2013-06-18
Conference paper
Electronic Resource
English
On wave propagation in gradient poroelasticity
| British Library Online Contents | 2016
On wave propagation in gradient poroelasticity
| British Library Online Contents | 2016
On wave propagation in gradient poroelasticity
| Elsevier | 2016
On wave propagation in gradient poroelasticity
| Online Contents | 2016
| British Library Online Contents | 2003