ng5 Alex's Videos (Grasshopper) - Grasshopper

Point Cloud Motiongrams and Sonification

2020-03-08T12:11:19.566Z

Was wondering how point clouds would sound after making MRI like section videos.
Using the usual Gyali Tzami Dataset with Volvox for Grasshopper3d.
Audio volume caution advised.

The process is based and build upon the research and software developed and shared by:
Alexander Refsum Jensenius
RITMO Centre for Interdisciplinary Studies in RhythmTime and Motion University of Oslo

Motiongrams: VideoAnalysis
https://www.uio.no/ritmo/english/research/labs/fourms/downloads/software/VideoAnalysis/index.html

Sonification: ImageSonifyer
https://www.uio.no/ritmo/english/research/labs/fourms/downloads/software/ImageSonifyer/index.html

Check his website for amazing video-sound stuff.
http://www.arj.no/

A musification process will follow, an attempt with Cicada plugin (well…).

Vision-based compression bending test apparatus: Stiffness grading of plywood fiberglass composite strips

2019-03-10T14:29:14.500Z

This research project investigated the mechanical testing of plywood-fiberglass composites, to propose a materially informed modeling and fabrication method of bending-active strips. A vision based compression bending test apparatus has been developed to measure the flexural properties of plywood-fiberglass composite slender beams. The number of fiberglass layers and the orientation of the fibres along the strip have been examined, in order to calibrate the bending behaviour of each strip segment, aiming to encode complex 3d form into flat 2d strips, which bent and anchored at both ends, form non-symmetrical arch shapes of variable curvature. The results show that the proposed method enables a unified materially informed form finding process, where the geometry is approximated according to local material specifications at macro, meso and micro scale. Informing physics based simulations with material properties data derived from the proposed mechanical testing scheme, allowed for fairly accurate material behaviour simulations, with deviations attributed, besides the non-standardized apparatus measurements, mainly to the manual fiberglass layup and the number of mechanical tests conducted for the calculation of the mechanical properties of each fiberglass layout variation.

more: https://www.researchgate.net/publication/329016703_Vision-based_compression_bending_test_apparatus_Stiffness_grading_of_plywood_fiberglass_composite_strips

Test report sample : https://vimeo.com/242117397

using:
Grasshopper for Rhino3D (David Rutten)
grasshopper3d.com/

Kangaroo 2 grasshopper plugin (Daniel Piker)
https://www.food4rhino.com/app/kangaroo-physics

K2Engineering grasshopper plugin (Cecilie Brandt)
https://github.com/CecilieBrandt/K2Engineering

Human grasshopper plugin (Andrew Heumann)
andrewheumann.com/#computation

Tracker Video analysis and modeling tool (Douglas Brown)
physlets.org/tracker/
compadre.org/osp/bulletinboard/home.cfm

Tracks:
Poptraume -Traume-fon by rubber-records(gr)
https://rubber-recordsgr.bandcamp.com/track/poptraume-traume-fon

Poptraume - 4m2m bios records#002

Axial compression bending test mechanism for plywood, fiberglass composites - Tracker video analysis - grasshopper3d - human

2017-11-09T20:33:14.932Z

Axial Bending test mechanism for plywood, fiberglass composites. Video report of a test specimen plywood 3mm, with facegrain perpendicular to load axis combined with one layer of 195gr/m2 double twill fiberglass at 0 degrees.

Part of my Msc Thesis:
"Compression bending test mechanism for plywood - fiberglass composites.
Encoding complex 3d form into flat 2d strips through fiber orientation and layers count distribution."

more info:
http://dias.library.tuc.gr/view/69935
presentation pdf:
http://dias.library.tuc.gr/view/manf/69937

using:
Grasshopper for Rhino3D (David Rutten)
http://www.grasshopper3d.com/

Human grasshopper plugin (Andrew Heumann)
http://andrewheumann.com/#computation

Tracker Video analysis and modeling tool (Douglas Brown)
https://physlets.org/tracker/
https://www.compadre.org/osp/bulletinboard/home.cfm

7 seg_ optical # digit rec ___ grasshopper_firefly_webcam_digiscale

2017-06-09T23:34:29.523Z

a quick test of 7 segment digits recognition coming out of a digital scale. only numbers, needs some more work. 120x60 pixels.

grasshopper, firefly

"907" Parametric Construction V _ Space Under Workshop (grasshopper, kangaroo)

2017-01-13T18:32:48.996Z

Parametric Construction V workshop. Organized in collaboration with Space Under Architectural Office for Practice and Research. http://www.spaceunder.com/

Experimenting with physical and digital models. A square paper is folded to form a module, that is modelled using grasshopper3d and kangaroo live physics engine.
Its triangular equilateral footprint defines the connectivity among many modules, which we decided to have variable sizes. Three connection points for each, set the topology and the constraints for their supporting frame structure. Taking advantage of the properties of CP mesh, where the incircles of adjacent triangles are tangent creating three contact points for each, the basis of the frame is determined. But since these contact points do not necessarily describe an equilateral triangle, a second step is applied to finalize the frame elements. This step, after applying and selecting the scale for each equilateral triangle centered to the CP mesh incircles, minimizes the length of each connection line, as derived from the chosen topology.

Using grasshopper3d for Rhino (David Rutten, Robert McNeel & Associates)
http://www.grasshopper3d.com/
http://www.rhino3d.com/

along with the following plugins:

Kangaroo (Daniel Piker)
http://www.food4rhino.com/app/kangaroo-physics
Human (Andrew Heumann)
http://www.food4rhino.com/app/human
Clipper (Arend, studioavw)
http://www.food4rhino.com/app/clipper-grasshopper
Bowerbird (Thomas Oberbichler)
https://github.com/oberbichler/Bowerbird/releases/tag/v0.6.3
Fab Tab (David Mans, neoarchaic.net)
http://www.neoarchaic.net/resources/grasshopper/fabtab-triangular-tiles/

Fabrication Assistant Iro Skouloudi

Supported by TUC FabLab
Special thanks go to Alexandros Vazakas for his input and support.
http://www.arch.tuc.gr/fablab/