READ ME file for 'Dataset for Elastomeric Sandpaper Replicas Paper" Dataset DOI: https://doi.org/10.5258/SOTON/D2287 File was created: June, 2022 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: Alexandra Snowdon (formerly Jackson), University of Southampton [ORCID ID, 0000-0001-6672-937X] Date of data collection: 2019 - 2022 Information about geographic location of data collection: Data was collected and processed at two sites: AkzoNobel, Gateshead and NBIC, University of Southampton. 1) AkzoNobel, Gateshead Mechanical testing of materials - Mechanical testing laboratory Development of casts and moulds - Polymer testing laboratory Flow cell testing for drag measurements - Marine biology laboratory Optical Coherence Tomography (OCT) image collection - Marine biology laboraroty 2) NBIC, University of Southampton OCT image processing - Fiji, imageJ This work was funded by a DTP ESPRC grant EP/R513325/1 to the University of Southampton with partial funding from NBIC/BBSRC 01POC18032 and AkzoNobel. -------------------------- SHARING/ACCESS INFORMATION -------------------------- Licenses/restrictions placed on the data, or limitations of reuse: Recommended citation for the data: This dataset supports the publication: AUTHORS: Alexandra Snowdon, Shi-Qi An, Alistair Finnie, Marie Dale, Simon Dennington, Jennifer Longyear, Julian Wharton, Paul Stoodley TITLE: Elastomeric sandpaper replicas as model systems for investigating elasticity, roughness and associated drag in a marine biofilm flow cell JOURNAL: Ocean Engineering PAPER DOI IF KNOWN: https://doi.org/10.1016/j.oceaneng.2022.112739 -------------------- DATA & FILE OVERVIEW -------------------- This dataset contains: Each file refers to sources and material replicas. The sources are Smooth PVC, Sandpaper-P80 and Sandpaper-P240. The material replicas are replicas of the sandpaper and smooth PVC and are labelled as: Filler-P40, Filler-P80, Filler-P240, Filler-smooth, Elastomer-P40, Elastomer-P80, Elastomer-P240 and Elastomer-smooth. Each excel file has a README tab incorporated but briefly: 1) OE_MaterialMechanics.csv - this file contains a summary of the mecanical data collected for the elastomer and the filler. Data is provided for microhardness testing, tensile testing and contact angles. For each experiment the replicate data is provided and information on the method (test pieces, equipment, etc.) 2) OEpaper_SourceIntermediateReplicaRougnessData.csv - this file contains data taken from the blue light interferometry. Multiple area scans (10 cm x 2 cm) were taken of the sources (sandpaper and PVC), intermediates (the moulds used to create the replicas) and the material replicas to ensure surface roughness was adequately transferred during casting and moulding. For the sources and material sandpaper replicas roughnss measurements were taken before and after exposue to flow in the flow cell to determine whether the surface had chnaged which could effect Cf values. As there were not sig. differences in surface roughness before and after flow, any differences in Cf between materials or roughness' was attributed to material mechanics. Average surface roughness (Sa, um) was used as the roughness parameter in this study, others were calculated but as the equipment had been previously calibrated using sandpaper where Sa was also used as the roughness parameter it seemed appropriate for comparability. There is a spreadsheet for each type of data set (such as Elastomer P40) which includes the month the data was collected, roughness data from each stage of the casting and moulding process for that given replica, data from different replicates, an average +/- SD and results from statistical analysis (shapiro wilk normality test and Bartlett variance test). All of this data is summarised on the summary tab, where Figure 5 a+b from the manuscipt can also be found. 3) OE_PressureDropData.csv - this file contains the measurements taken during the flow cell experiments and the calculations used to give Cf and Re. Data for all test pieces: sources and material sandpaper replicas, is included. For each test piece type, for example Elastomer-P40, there are 2 - 4 replicates and ech replicate has its own spreadsheet (labelled 1, 2, 3 or 4). For each group there is aslo an average spreadsheet and a summary, where calculations have been that provide data for other workbooks, for example calculating average Cf at 22000 and 40000 Re. Figure 8 in the manuscipt is present in this workbook. 4) OE_AverageCfvsAverageSa.csv - this file contains average drag data for all material sandpaper replicas taken from flow cell experiments and the average surface roughness (Sa, um) data taken using blue light interferometry. This data makes up Figure 9 in the manuscipt. The average drag (Cf) (+/- SD) has been calculated for all test pieces by inputting the slope of pressuredrop/flowvelocity^2 (taken from the pressure drop data workbook) into the normal Cf equation. Percentage differences have been calculated between all test pieces to assess the affect of material and roughness on average drag. Also, Filler and source data has been combined to give a Rigid dataset which has been compared to the elastomer. As well as the asymmetric flow cell data (smooth top, rough base), a symmetric flow cell was set up where the top and base plate were of equivalent roughness and average drag was calculated. A comparison of the rigid asymmetric (A) and symmetric (S) flow cell systems has been made and is given as supplemental in the manuscipt. 5) OE_UncertaintyAnalysis.csv - this file contains data used to calculate experimental uncertainty and elemental uncertainty (Cimbala, 2013).Experimental uncertainty was calculated for average Cf values at 22000 and 40000 Re, calculated using average values for the component variables in the Cf equation at the Re mentioned. A numerical and % error has been calculated for each replica and source, and this has been summarised in the 'averages' tab for experimetal uncertainty at different Re. This data is presented in the results section of the manuscipt and in the supplemental. Elemental uncertainty was also calculated, which incorporates measured and manufacturer error around the component variables of the Cf equation. Again, an 'averages' tab has been included for the elemental uncertainty data which is also provided as supplemental to the manuscipt. CRediT authorship contribution statement: Alexandra Snowdon: Conceptualization, Methodology, Validation, Formal analysis, Investigation, Resources, Writing – original draft, Writing – review & editing, Visualization. Shi-Qi An: Formal analysis, Investigation. Alistair Finnie: Writing – review & editing. Marie Dale: Methodology, Writing – review & editing. Simon Dennington: Methodology, Writing – original draft, Writing – review & editing. Jennifer Longyear: Conceptualization, Methodology, Resources, Writing – original draft, Writing – review & editing, Supervision, Funding acquisition. Julian Wharton: Conceptualization, Methodology, Writing – original draft, Writing – review & editing, Supervision, Funding acquisition. Paul Stoodley: Conceptualization, Methodology, Writing – original draft, Writing – review & editing, Funding acquisition. -