Dataset
Data Publication
Acoustic, mechanical, and microstructure data used in: Ultrasonic Imaging of the Onset and Growth of Fractures within Partially Saturated Whitby Mudstone using Coda-Wave Decorrelation Inversion
Zotz-wilson, Reuben | Douma, L.A.N.R. (Lisanne) | Sarout, J. (Joel) | Dautriat, J. (Jeremie) | Dewhurst, D. N. (David) | Barnhoorn, A. (Auke)
4TU.Centre for Research Data
(2020)
Descriptions
Using active ultrasonic source survey data, Coda-wave Decorrelation (CWD) time-lapse imaging during the triaxial compression of Whitby Mudstone cores provides a 3-D description of the evolution and redistribution of inelastic strain concentrations. Acoustic Emissions (AEs) monitoring is also performed between any two consecutive surveys. From these data, we investigate the impact of initial water saturation $S_w$ on the onset, growth, and reactivation of inelastic deformation, compared to the post-deformation fracture network extracted from X-ray tomography scans. Our results indicate for the applied strain-rate and degree of initial water saturation, and within the frequency range of our ultrasonic transducers (0.1 to 1 MHz), that inelastic strain localisation and propagation in the Whitby Mudstone does not radiate AEs of sufficient magnitude to be detected above the average noise level. This is true for both the initial onset of inelasticity (strain localisation), and during macroscopic failure. In contrast, the CWD results indicate the onset of what is interpreted as localised regions of inelastic strain at less than fifty percent of the peak differential stress the Whitby Mudstone can sustain. The seemingly aseismic nature of these clay-rich rocks suggests the gradual development of inelastic strain, from the microscopic diffuse damage, up until the macroscopic shear failure.
Keywords
Originally assigned keywords
Geology
FOS: Earth and related environmental sciences
Geophysics
Mineral Exploration
Coda-Wave Decorrelation
Monitoring
Mudstones
MSL enriched keywords
sedimentary rock
mudstone
shale
Whitby mudstone
Ancillary equipment
acoustic measurement - active source
ultrasonic imaging equipment
Ancillary equipment
model structure monitoring (3D)
acoustic measurement - active source
ultrasonic imaging equipment
minerals
silicate minerals
phyllosilicates
clay
unconsolidated sediment
clastic sediment
clay
Apparatus
deformation testing
compression testing
triaxial compression apparatus
Measured property
strain
inelastic strain
acoustic emission (AE)
Inferred deformation behavior
deformation behaviour
inelastic deformation
localized deformation
shear failure
Measured property
strain
inelastic strain
acoustic emission (AE)
fluid-rock interaction
water saturation
Apparatus
X-ray tomography
Technique
imaging (3D)
computed tomography (CT)
Metadata
MSL enriched sub domains
rock and melt physics
analogue modelling of geologic processes
microscopy and tomography
Resource Type
Source publisher
| 4TU.Centre for Research Data |
DOI
| 10.4121/uuid:dc3627dd-8434-4fa3-a4f0-b886c31c1ce2 |
Creators
| Zotz-wilson, Reuben |
| Personal |
| Douma, L.A.N.R. (Lisanne) |
| Personal |
| Sarout, J. (Joel) |
| Personal |
| Dautriat, J. (Jeremie) |
| Personal |
| Dewhurst, D. N. (David) |
| Barnhoorn, A. (Auke) |
| Personal |
Contributors
| TU Delft, Faculty Of Civil Engineering And Geosciences, Department Of Geoscience And Engineering |
| Organizational |
Citation
Zotz-wilson, R., Douma, L. A. N. R. (L., Sarout, J. (J., Dautriat, J. (J., Dewhurst, D. N. (D., & Barnhoorn, A. (A. (2020). Acoustic, mechanical, and microstructure data used in: Ultrasonic Imaging of the Onset and Growth of Fractures within Partially Saturated Whitby Mudstone using Coda-Wave Decorrelation Inversion (Version 1) [Data set]. 4TU.Centre for Research Data. https://doi.org/10.4121/UUID:DC3627DD-8434-4FA3-A4F0-B886C31C1CE2
Dates
| Issued | 2020-03-05 |
Language
en
Rights
| Name | Creative Commons Zero v1.0 Universal |
| URI | https://creativecommons.org/publicdomain/zero/1.0/legalcode |
| Identifier | cc0-1.0 |
| Identifier Scheme | SPDX |
| Scheme URI | https://spdx.org/licenses/ |
Locations
Geo location(s)
Whitby Mudstone Formation, Whitby, UK