Photoporomechanics: An Experimental Method to Visualize the Effective Stress Field in Fluid-Filled Granular Media
Journal Article
·
· Physical Review Applied
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); OSTI
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Effective stress governs the mechanical behavior of porous media. In this study, we use photoelasticimetry to visualize the evolving effective stress field in fluid-filled granular media in processes that couple fluid flow and mechanical deformation. We refer to this experimental method as photoporomechanics. We develop a fabrication process to produce millimeter-scale residual-stress-free photoelastic spheres with high geometric accuracy. We use color to quantify the forces acting on the particles over a wide range of forces, while using light intensity for a small range of forces. We then provide an application of photoporomechanics to illustrate the evolution of effective stress during one-dimensional consolidation: a process by which the stresses caused by a sudden load are gradually transmitted through a fluid-filled granular pack as the fluid drains and excess pore pressures dissipate. We report our technique provides a powerful experimental model system to study the grain-scale underpinning of coupled solid-fluid processes in granular media.
- Research Organization:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0018357
- OSTI ID:
- 1852613
- Journal Information:
- Physical Review Applied, Journal Name: Physical Review Applied Journal Issue: 2 Vol. 16; ISSN 2331-7019
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fracturing in Wet Granular Media Illuminated by Photoporomechanics
Multiphase flow and granular mechanics
Effective stress principle for partially saturated granular media
Journal Article
·
Mon Dec 26 19:00:00 EST 2022
· Physical Review Applied
·
OSTI ID:2420773
Multiphase flow and granular mechanics
Journal Article
·
Mon Nov 23 19:00:00 EST 2020
· Physical Review Fluids (Online)
·
OSTI ID:1852614
Effective stress principle for partially saturated granular media
Conference
·
Thu Dec 31 23:00:00 EST 1981
·
OSTI ID:7059247