in-situ-monitoring-of-direct-ink-writing

Code and sample data for in-situ monitoring of print stability during direct ink writing

Additional video files are available at Mendeley Data: http://dx.doi.org/10.17632/2236m9683h.1

Mathematica package files (.wl) and aggregate data for the paper "In situ characterization of low-viscosity direct ink writing: stability, wetting, and rotational flows." Code describes image analysis techniques for analyzing stability, wetting, and rotational flows in videos of a direct ink writing process. An example video set is included.

"gras" refers to the Grasshopper camera which was used to capture videos from the side (stability/wetting) "flea" refers to the Flea camera which was used to capture videos from the back (rotational flows).

VIDEO ANALYSIS WORKFLOW

1. calibration.wl describe the nozzle geometry and substrate position for a video

2. extrusionBehaviors.wl detect and analyze fluid surfaces for each frame in a video (or 40-80 frames, for stable flows)

3. aggregation.wl summarize data across many frames, describing average values and characterizing periodicity of droplets

4. displacements.wl analyze xz videos to find particle displacements

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TOOLBOXES

fileManagement.wl handling this file naming convention

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DATA

summaries4.csv list of aggregate video data

thicknesstable.csv aggregate filament height data

dispsSummary.csv aggregate particle displacements for rotational flows

Example video flea_disps2_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.csv displacements

flea_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.avi
	video from the back

gras_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.avi
	video from the side

grasGeoA_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.txt
	geometry stats about video

grasHeights_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.csv
	table of stage heights in um

grasHeights_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.tiff
	visual representation of tilt

grasPositions3_linex_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.csv
	list of fluid surface measurements over time

grasSummary4_T25_H150_FDTS_film_vF1.5_vSfast_171024165320.csv
	summarized fluid surface measurements over time