Hydro-Mechanical and Elastodynamic Properties of Dynamically-Stressed Fractured Rock

Experimental data from a tensile-fractured Westerly granite specimen under triaxial stresses. The dataset relates fracture permeability and aperture to nonlinear elastodynamic properties, measured using acoustic signals from piezoelectric transducers and pressure-sensitive film. The work was conducted by Clay Wood of Pennsylvania State University.

Use Cases

• Modeling fracture permeability evolution based on dynamic stress and aperture measurements.
• Analyzing the relationship between ultrasonic wave velocities and fracture contact area.
• Studying the recovery (slow-dynamics) of fracture interface properties following stress perturbations.

Strengths

• Measurements are conducted at specified effective normal stresses of 10, 12.5, 15, 17.5, and 20 MPa.
• Pore pressure oscillations are applied at controlled amplitudes ranging from 0.2 to 1 MPa at 1 Hz frequency.
• Fracture contact area is characterized using pressure-sensitive film at stresses from 9 to 21 MPa.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Pennsylvania State University

Collection Method

Laboratory experiments on a rough, tensile-fractured Westerly granite specimen, measuring fluid flow and transmitting acoustic signals via piezoelectric transducers.