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Metadata Files

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)

MSL enriched sub domains i

rock and melt physics
analogue modelling of geologic processes
microscopy and tomography

Source

https://data.4tu.nl/articles/_/12717056/1

Source publisher

4TU.Centre for Research Data


DOI

10.4121/uuid:dc3627dd-8434-4fa3-a4f0-b886c31c1ce2


Creators

Zotz-wilson, Reuben

https://orcid.org/:

0000-0001-6223-2825

Douma, L.A.N.R. (Lisanne)

https://orcid.org/:

0000-0002-9141-8458

Sarout, J. (Joel)

https://orcid.org/:

0000-0003-3217-7102

Dautriat, J. (Jeremie)

https://orcid.org/:

0000-0003-1191-5583

Dewhurst, D. N. (David)

Barnhoorn, A. (Auke)

https://orcid.org/:

0000-0002-3074-5535


Contributors

TU Delft, Faculty Of Civil Engineering And Geosciences, Department Of Geoscience And Engineering

Other


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

Creative Commons Zero v1.0 Universal


Datacite version

1


Geo location(s)

Whitby Mudstone Formation, Whitby, UK


Spatial coordinates