micro-XRCT data sets and in situ measured ultrasonic wave propagation of a pre-stressed monodisperse rubber and glass particle mixture with 30% volume rubber content

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Ruf, Matthias; Taghizadeh, Kianoosh; Steeb, Holger, 2022, "micro-XRCT data sets and in situ measured ultrasonic wave propagation of a pre-stressed monodisperse rubber and glass particle mixture with 30% volume rubber content", https://doi.org/10.18419/darus-2833, DaRUS, V1, UNF:6:V7YRRp377HBaXdVaRSc6ig== [fileUNF]

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Description	This dataset contains two micro X-ray Computed Tomography (micro-XRCT) data sets from scans of the identical cylindrical sample (diameter 80 mm; unloaded height 80 mm) under different uniaxial compression loads. The sample consists of monodisperse soft (rubber) and stiff (glass) particles mixture. Both particles have an identical diameter of 4 mm. The volume fraction of the rubber particles is 30 %. The scan was performed in a low X-ray absorbing transparent oedometer cell with an integrated pair of P-wave ultrasonic transducers to determine in situ the sample stiffness based on wave propagation velocity measurements. On both sides, the wave travels through a 10 mm long Poly (methyl methacrylate) (PMMA) pre-run and after-run section, before and after the wave enters and leaves the sample. The prepared sample inside the oedometer cell was uniaxially compressed in axial direction in subsequent force increments from F_stat. = 200 N to F_stat. = 1000 N (force-controlled) using a Universal Testing Machine (UTM) integrated into the XRCT system. At each force level, the system was relaxed for some time at the defined force to compensate the creep behavior of the soft particles. Subsequently, ultrasonic wave propagation measurements were performed at five different load levels, F_stat. = {200, 400, 600, 800, 1000} N. micro-XRCT scans were acquired in situ at F_stat. = {400, 800} N. For this, it was switched from force-controlled to displacement-controlled to avoid creeping and an eventual movement of the particles during the imaging. In this data set, the reconstructed 3d volumes ("mixture_nu0.3_F400N_reconstructed.tar.gz" and "mixture_nu0.3_F800N_reconstructed.tar.gz"), as well as the projection images ("mixture_nu0.3_F400N_projections.tar.gz" and "mixture_nu0.3_F800N_projections.tar.gz") for both preloads are given. The raw ultrasonic measurement data (transducer signals over time) is provided for all five preloads ("mixture_nu0.3_ultrasonic_data.tar.gz"), before and after the force-controlled relaxation, as an averaged signal of a stack of 32 signals. The file "mixture_nu0.3_utm_data.csv" contains the measured axial force and displacement from the UTM during the whole experiment. Based on the measured displacement of the UTM, the current mixture length was determined. In the file “mixture_nu0.3_P-wave_moduli.csv” the final calculated P-wave moduli for the different preload levels are contained.
Subject	Computer and Information Science; Earth and Environmental Sciences; Engineering; Physics
Keyword	Granular Media, Granular Material, Wave Propagation, Micro X-Ray Computed Tomography (micro-XRCT), X-Ray Microtomography, Porous Media, Porous Medium, Geomechanics
Related Publication	Ruf, M., Taghizadeh, K. & Steeb, H. (2022). Multi-scale characterization of granular media by in situ laboratory X-ray computed tomography. GAMM Mitteilungen, 45(3-4), e202200011. doi: 10.1002/gamm.202200011
Notes	Ruf, M. and Taghizadeh, K. contributed equally.
Data Generation	Experiment
License/Data Use Agreement	CC BY 4.0

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	1 to 6 of 6 Files	Original Format Archival Format (.tab)
	mixture_nu0.3_F400N_projections.tar.gz Gzip Archive - 1.4 GB Published Sep 26, 2022 13 Downloads MD5: 11861c5baa4155d35b97783e30c7b36f Projection images (360 deg, angle increment 0.25 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format. Preload F_stat. = 400 N.	Access File File Access Public Download Options Gzip Archive Download Metadata Data File Citation EndNote XML RIS BibTeX
	mixture_nu0.3_F400N_reconstructed.tar.gz Gzip Archive - 962.7 MB Published Sep 26, 2022 14 Downloads MD5: aeee06d700ce8af9f53d569f065a1488 Reconstructed micro-XRCT data set in 16 bit *.tif file format. 972x972x768 voxels with the uniform voxel size of 110 µm. Preload F_stat. = 400 N.	Access File File Access Public Download Options Gzip Archive Download Metadata Data File Citation EndNote XML RIS BibTeX
	mixture_nu0.3_F800N_projections.tar.gz Gzip Archive - 1.4 GB Published Sep 26, 2022 11 Downloads MD5: ca6445792856bb203957dcad7f1f7050 Projection images (360 deg, angle increment 0.25 deg), dark image (di) and open beam image (ob) in 16 bit *.tif file format. Preload F_stat. = 800 N.	Access File File Access Public Download Options Gzip Archive Download Metadata Data File Citation EndNote XML RIS BibTeX
	mixture_nu0.3_F800N_reconstructed.tar.gz Gzip Archive - 964.4 MB Published Sep 26, 2022 10 Downloads MD5: 4b1ccaddb491fa693f304215f2604e91 Reconstructed micro-XRCT data set in 16 bit *.tif file format. 972x972x768 voxels with the uniform voxel size of 110 µm. Preload F_stat. = 800 N.	Access File File Access Public Download Options Gzip Archive Download Metadata Data File Citation EndNote XML RIS BibTeX
	mixture_nu0.3_ultrasonic_data.tar.gz Gzip Archive - 141.3 MB Published Sep 26, 2022 14 Downloads MD5: 61037d263b769553545de4b53066f182 Raw ultrasonic measurement data in .psdata and .csv file format. File name schema: rubber volume fraction of the mixture ("nu"); static preload F_stat. in N ("F"); measurement date. Oscilloscope channels: A = receiver transducer signal; B = transmitter transducer signal.	Access File File Access Public Download Options Gzip Archive Download Metadata Data File Citation EndNote XML RIS BibTeX
	mixture_nu0.3_utm_data.tab Tabular Data - 570.7 KB Published Sep 26, 2022 61 Downloads 3 Variables, 22061 Observations UNF:6:V7YRRp377HBaXdVaRSc6ig== From the universal testing machine measured displacement and force during the in situ experiment in *.csv file format.	Preview "mixture_nu0.3_utm_data.tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX

Citation Metadata

Persistent Identifier	doi:10.18419/darus-2833
Publication Date	2022-09-26
Title	micro-XRCT data sets and in situ measured ultrasonic wave propagation of a pre-stressed monodisperse rubber and glass particle mixture with 30% volume rubber content
Author	Ruf, Matthias (University of Stuttgart, Institute of Applied Mechanics (CE)) - ORCID: 0000-0003-0299-5921 Taghizadeh, Kianoosh (University of Stuttgart, Institute of Applied Mechanics (CE); University of Twente, Multiscale Mechanics (MSM)) - ORCID: 0000-0003-3394-3251 Steeb, Holger (University of Stuttgart, Institute of Applied Mechanics (CE) & SC SimTech) - ORCID: 0000-0001-7602-4920
Point of Contact	Use email button above to contact. Steeb, Holger (University of Stuttgart, Institute of Applied Mechanics (CE) & SC SimTech)
Description	This dataset contains two micro X-ray Computed Tomography (micro-XRCT) data sets from scans of the identical cylindrical sample (diameter 80 mm; unloaded height 80 mm) under different uniaxial compression loads. The sample consists of monodisperse soft (rubber) and stiff (glass) particles mixture. Both particles have an identical diameter of 4 mm. The volume fraction of the rubber particles is 30 %. The scan was performed in a low X-ray absorbing transparent oedometer cell with an integrated pair of P-wave ultrasonic transducers to determine in situ the sample stiffness based on wave propagation velocity measurements. On both sides, the wave travels through a 10 mm long Poly (methyl methacrylate) (PMMA) pre-run and after-run section, before and after the wave enters and leaves the sample. The prepared sample inside the oedometer cell was uniaxially compressed in axial direction in subsequent force increments from F_stat. = 200 N to F_stat. = 1000 N (force-controlled) using a Universal Testing Machine (UTM) integrated into the XRCT system. At each force level, the system was relaxed for some time at the defined force to compensate the creep behavior of the soft particles. Subsequently, ultrasonic wave propagation measurements were performed at five different load levels, F_stat. = {200, 400, 600, 800, 1000} N. micro-XRCT scans were acquired in situ at F_stat. = {400, 800} N. For this, it was switched from force-controlled to displacement-controlled to avoid creeping and an eventual movement of the particles during the imaging. In this data set, the reconstructed 3d volumes ("mixture_nu0.3_F400N_reconstructed.tar.gz" and "mixture_nu0.3_F800N_reconstructed.tar.gz"), as well as the projection images ("mixture_nu0.3_F400N_projections.tar.gz" and "mixture_nu0.3_F800N_projections.tar.gz") for both preloads are given. The raw ultrasonic measurement data (transducer signals over time) is provided for all five preloads ("mixture_nu0.3_ultrasonic_data.tar.gz"), before and after the force-controlled relaxation, as an averaged signal of a stack of 32 signals. The file "mixture_nu0.3_utm_data.csv" contains the measured axial force and displacement from the UTM during the whole experiment. Based on the measured displacement of the UTM, the current mixture length was determined. In the file “mixture_nu0.3_P-wave_moduli.csv” the final calculated P-wave moduli for the different preload levels are contained.
Subject	Computer and Information Science; Earth and Environmental Sciences; Engineering; Physics
Keyword	Granular Media https://www.wikidata.org/wiki/Q1155083 (Wikidata) Granular Material https://www.wikidata.org/wiki/Q1155083 (Wikidata) Wave Propagation https://www.wikidata.org/wiki/Q1758425 (Wikidata) Micro X-Ray Computed Tomography (micro-XRCT) https://www.wikidata.org/wiki/Q3042540 (Wikidata) X-Ray Microtomography https://www.wikidata.org/wiki/Q3042540 (Wikidata) Porous Media https://www.wikidata.org/wiki/Q3271208 (Wikidata) Porous Medium https://www.wikidata.org/wiki/Q3271208 (Wikidata) Geomechanics https://www.wikidata.org/wiki/Q2670285 (Wikidata)
Related Publication	Ruf, M., Taghizadeh, K. & Steeb, H. (2022). Multi-scale characterization of granular media by in situ laboratory X-ray computed tomography. GAMM Mitteilungen, 45(3-4), e202200011. doi: 10.1002/gamm.202200011 https://doi.org/10.1002/gamm.202200011 Taghizadeh, K., Ruf, M., Luding, S., & Steeb, H. (2023). X-ray 3D imaging–based microunderstanding of granular mixtures: Stiffness enhancement by adding small fractions of soft particles. Proceedings of the National Academy of Sciences, 120(26), e2219999120. doi: 10.1073/pnas.2219999120 https://doi.org/10.1073/pnas.2219999120 Ruf, M., Lee, D., & Steeb, H. (2023). A multifunctional mechanical testing stage for micro X-ray computed tomography. Review of Scientific Instruments, 94(8), 085115. doi: 10.1063/5.0153042 https://doi.org/10.1063/5.0153042
Notes	Ruf, M. and Taghizadeh, K. contributed equally.
Language	English
Producer	University of Stuttgart, Institute of Applied Mechanics (CE) - Chair for Continuum-Mechanics https://www.mib.uni-stuttgart.de/en University of Stuttgart - Cluster of Excellence EXC 2075 "SimTech" https://www.simtech.uni-stuttgart.de
Production Date	2021
Production Location	University of Stuttgart, Institute of Applied Mechanics (CE), Stuttgart, 70569, Germany
Contributor	Data Collector : Ruf, Matthias Data Collector : Taghizadeh, Kianoosh Rights Holder : Steeb, Holger
Funding Information	DFG: STE 969/13-1 DFG: STE-969/16-1 within SPP 1897 “Calm, Smooth and Smart” DFG: SFB 1313 (Project No. 327154368)
Data Type	Image data; Numerical data
Related Dataset	Taghizadeh, K. (2021). Raw data of wave propagation experiments using glass-rubber mixtures. 4TU.ResearchData. https://doi.org/10.4121/14096491.v1; Ruf, M., Taghizadeh, K. & Steeb, H. (2021). micro-XRCT data sets and in situ measured ultrasonic wave propagation of a pre-stressed monodisperse rubber and glass particle mixture with 50% volume rubber content. DaRUS. https://doi.org/10.18419/darus-2208; Ruf, M., Taghizadeh, K. & Steeb, H. (2023). micro-XRCT data sets and in situ measured ultrasonic wave propagation of pre-stressed monodisperse rubber and glass particle mixtures with 10%, 20%, 40%, and 60% volume rubber content: sample 1. DaRUS. https://doi.org/10.18419/darus-3436; Ruf, M., Taghizadeh, K. & Steeb, H. (2023). micro-XRCT data sets and in situ measured ultrasonic wave propagation of pre-stressed monodisperse rubber and glass particle mixtures with 10%, 20%, and 30% volume rubber content: samples 2 and 3. DaRUS. https://doi.org/10.18419/darus-3437
Other Reference	Ruf, M., & Steeb, H. (2020). An open, modular, and flexible micro X-ray computed tomography system for research. Review of Scientific Instruments, 91(11), 113102. https://doi.org/10.1063/5.0019541; Taghizadeh, K., Steeb, H., Luding, S., & Magnanimo, V. (2021). Elastic waves in particulate glass-rubber mixtures. Proceedings of the Royal Society A, 477(2249), 20200834, https://doi.org/10.1098/rspa.2020.0834

Process Metadata

Processing Methods	In situ ultrasonic through-transmission measurement (In the through-transmission technique, there are two ultrasonic transducers, one on either side of the sample, whereby one transmits a pulse while the other receives the pulse after a certain travel time. With the current sample length and the related travel time of the pulse within the sample, the wave propagation velocity can be determined.) ; Parameters: All parameters with label "a". micro-XRCT scan of the centered sample (The micro-XRCT data sets were acquired using a cone beam micro-XRCT setup.) ; Parameters: All parameters with label "b".
Method Parameters	P-wave transducer frequency ("a") [kHz] : 100 Amplified square wave pulse ("a") [V] : 100 Square wave pulse repetition frequency ("a") [Hz] : 100 Signal gain ("a") [dB] : 40 Sampling frequency ("a") [MS/s] : 125 Sampling resolution ("a") [bit] : 15 Signal stacking ("a") : average of 32 signals Geometric magnification ("b") [-] : 1.36000 Source detector distance ("b") [mm] : 1000.29200 Source object distance ("b") [mm] : 735.50896 X-ray tube voltage ("b") [kV] : 110 X-ray tube current ("b") [µA] : 110 X-ray spectrum filter ("b") : no Number of vertical detector pixel (2x2 binned) ("b") [pixel] : 768 Number of horizontal detector pixel (2x2 binned) ("b") [pixel] : 972 Detector pixel size (2x2 binned) ("b") [mm] : 0.1496 Resulting voxel size ("b") [mm] : 0.110 Detector exposure time ("b") [ms] : 1000 Number of projection angles ("b") : 1440 Number of projections per angle ("b") : 1 Detector bad pixel map version ("b") : "Version_Dexela1512_current_ob " Detector in-plane (YZ-plane) moving pattern in pixel ("b") : [(0,-1),(0,1] Detector in-plane (YZ-plane) positions according to moving pattern ("b") : 2 Number of dark images ("b") (di) : 1 Number of open beam images ("b") (ob) : 1 Position X-axis ("b") [mm] : 724.79496 Position Y-axis ("b") [mm] : 2.00000 Position Z-axis ("b") [mm] : 522.63 Position switch detector axis ("b") [mm] : 67.00000 Position detector X-axis ("b") [mm] : 205.00000 Position detector Y-axis ("b") [counts] : 296700 Position detector Z-axis ("b") [counts] : 296800
Software	Octopus Reconstruction Version: 8.9.4.9 (Vlassenbroeck, J., Dierick, M., Masschaele, B., Cnudde, V., Van Hoorebeke, L., & Jacobs, P. (2007). Software tools for quantification of X-ray microtomography at the UGCT. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 580(1), 442-445. https://doi.org/10.1016/j.nima.2007.05.073) PicoScope 6 - PC Oscilloscope Software Version: 6.14.5.4585 (https://www.picotech.com) free
Instruments	micro-XRCT system (Ruf, M., & Steeb, H. (2020). An open, modular, and flexible micro X-ray computed tomography system for research. Review of Scientific Instruments, 91(11), 113102. https://doi.org/10.1063/5.0019541) , Version: Calibration: "Dexela1512_UMT_setup_v2020-12-09" X-ray source , Version: FineTec FORE 180.01C TT Detector , Version: PerkinElmer Dexela 1512 with GOS-based DRZ-Standard scintillator Stage X-Axis , Version: Custom-made: Spindle with 2 mm pitch and Vexta PK296-E4.5B stepper motor Stage Y-Axis , Version: Custom-made: Spindle with 2 mm pitch and Vexta PK296-E4.5B stepper motor Stage Z-axis , Version: Zwick 1445 10 kN universal testing machine Stage rotZ-axis bottom , Version: XHuber 1-Circle Gonimeter 411-X3W2 Stage rotZ-axis top , Version: XHuber 1-Circle Gonimeter 411-X3W2 Stage switch detector , Version: ISEL 2111325086/213503 spindle (pitch 2.5 mm) with Vexta PK245M-01B stepper motor Stage detector X-axis , Version: Custom-made: Spindle with 5 mm pitch and Vexta PK245M-01B stepper motor Stage detector Y-axis , Version: Standa 8MTF-75XX-MEn1 Stage detector Z-axis , Version: Standa 8MTF-75XX-MEn1 Multi-axis controller (8 channel) , Version: Standa 8SMC4-ETHERNET Multi-axis controller (12 channel) , Version: Standa 8SMC5-ETHERNET Universal testing machine , Version: Zwick 1445 10 kN universal testing machine refurbished from Doli Elektronik GmbH, Germany , Software: Test&Motion Load sensor (Sensor of the universal testing machine) , Version: KR110a +- 5 kN from ME-measuring systems Custom-made oedometer cell with integrated ultrasonic through-transmission setup (Self-designed and built low X-ray absorbing oedometer cell with an integrated pair of ultrasonic transducers to determine the sample stiffness. The sample chamber size is 80 mm in diameter and 70-80 mm in length. The preload of the sample is applied via an external load frame, here a modified universal testing machine.) P-wave contact transducer pair , Version: Olympus-Panametrics Videoscan V1011 (100 kHz) Ultrasonic square wave pulser/receiver unit , Version: Olympus-Panametrics 5077PR PC oscilloscope , Version: PicoScope 5444B
Processing Steps	1. Generation ; Methods: In situ ultrasonic through-transmission measurement ; Output: "mixture_nu0.3_ultrasonic_data.tar.gz"; "mixture_nu0.3_utm_data.tab"; "mixture_nu0.3_P-wave_moduli.tab" 2. Generation ; Methods: micro-XRCT scan of the centered sample ; Output: "mixture_nu0.3_F400N_projections.tar.gz"; "mixture_nu0.3_F800N_projections.tar.gz"; "mixture_nu0.3_F400N_reconstructed.tar.gz"; "mixture_nu0.3_F800N_reconstructed.tar.gz"

Engineering Metadata

Data Generation	Experiment
Measured Variables	Time (time) [µs or s] Receiver transducer signal (average(A)) [V] Transmitter transducer signal (average(B)) [V] Displacement (displacement) [mm] Uniaxial force (force) [N]
Controlled Variables	Rubber beads volume fraction (nu) [-] : 0.3 Preload (F_stat.) [N] : {200, 400, 600, 800, 1000} Displacement during image acquisition [mm] : fixed
System Phases	Glass beads Rubber beads
System or Phase Components	Glass-rubber mixture (Mixture consisting of 30 volume percent monodisperse rubber beads and 70 volume percent monodisperse glass beads. Both with a diameter of 4 mm. Mixture diameter 80 mm and unloaded height 80 mm. Glass beads: bulk mass density 1540 kg/m^3 (nu = 0.0) Young’s modulus 65 GPa Poisson's ratio 0.2 Rubber beads: bulk mass density 860 kg/m^3 (nu = 1.0) Young’s modulus 0.185 GPa Poisson's ratio 0.5 For further details see: Taghizadeh, K., Steeb, H., Luding, S., & Magnanimo, V. (2021). Elastic waves in particulate glass-rubber mixtures. Proceedings of the Royal Society A, 477(2249), 20200834, https://doi.org/10.1098/rspa.2020.0834)
System Parameters	Wave propagation time in 10 mm thick PMMA [s] : 1.55e-6 PMMA pre-run section [mm] : 10 PMMA after-run section [mm] : 10

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