Week 5: Preparations

After a meeting with Scott, we decided to keep the tests more simple and take a step back in the process. The next things we will try to complete before the science fair:

  1. A single fold;
  2. Several single folds;
  3. Create a graphic with our obtained data;
  4. A video of the process, in a timelapse;
  5. More models to show the interesting stuff of 4D printing.

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The lines of the connections shown above where to thin so eventually they broke. The tension in the shape disappeared because of this failur. So the connections should be thicker for the next shapes.

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After the single folds we made another attempt of making a hyperbolic paraboloid. The results are shown above. First we printed directly on the fabric and for the second print we laminated the shape. The laminating didn’t work that good.

The laminated Hypar shows that when only one layer is printed the shape doesn’t have any rigidity. The outer lines are to flexible so no shape we be defined. When the layers are printed with to low an altitude the results are not predictable.

In this movie the movements of the Hypar are shown: Hyparbolic paraboloid

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Furthermore we where wondering what would happen if we printed fully filled triangles. The findings of this print where that the tension disappears when printing with to much PLA on the fabric. The PLA will trap the tension and nothing will happen.

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We made empty triangles and these shapes did deform (see pictures shown above). We can conclude that shapes which aren’t fully filled with PLA have a higher chance of deforming.

In this movie the movements of the Triangle shapes are shown: Triangle frames

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