New Textiles 2012 » ManuelDSP

3d Printed Fabric – Solomon Knots

ManuelDSP — Wed, 09 May 2012 19:01:01 +0000

For this project I chose to model a woven fabric. The design I chose is called a Solomon knot. The 3d model was constructed in Rhino using a virtual peg board, similar to how one would be used in real life. The path of the yarn was mapped using control points, and image of the Solomon knots to trace and 4 different planes. Once the curves that constructed the pattern were in place they were given a thickness of 2mm, and adjustments were necessary to make sure that these cylindrical solids did not intersect. Once there were no intersections and the solid was watertight, it could be sent to be 3d printed using a polyjet printer. The piece was then excavated from the support material.

Cast Knitting

ManuelDSP — Tue, 10 Apr 2012 18:48:09 +0000

Assignment 1

Assignment 2

This project uses knitting as a soft structure, that is given form then hardened. The knitting is done usung a circular knitting machine, tightened at both ends to make a small knit pouch. A small balloon is then inserted and inflated inside this pouch. This makes the knit fabric taught and it adopts the shape of the balloon. The knit fabric is then dipped in plaster and allowed to harden. Once the plaster is dry the balloon is popped and removed leaving a hard lattice structure.

Final Project Proposal MDS

ManuelDSP — Tue, 03 Apr 2012 14:06:42 +0000

UPDATES ———-> progress

presentation

This proposal is to create a wearable silicone skin, embedded with flex sensors and pneumatic actuators. The skin would follow the contour of the body, using an origami formwork to cast the silicone rubber. The origami’s two way system would be mapped onto the body to maximize the input and output ranges of motion. The pneumatic actuators will be hollow cells inside the silicone cast, triggered by the flexing motions of the body.

laser cut lace – delauney on voronoi

ManuelDSP — Tue, 20 Mar 2012 18:02:56 +0000

This assignment took different point clouds to generate voronoi and delauney diagrams.

These diagrams were then given a local offset, relative to the size of the cell, to generate a changing thickness.

Finally since the voronoi diagram and the delauney diagram are inversions of each other, diagrams made from the same point cloud can be stacked.

voronoi delauney 1

voronoi delauney 2

Shape changing textile – paper slug

ManuelDSP — Tue, 20 Mar 2012 17:19:46 +0000

For this assignment I decided to use paper as a textile, and nitinol wire as an actuator. Using origami techniques I created a pleated cylinder, that would compress and decompress as syncopated spurts of current were allowed to move through the different lengths of nitinol wire threaded through the structure.

Eco-flex Resistor

ManuelDSP — Tue, 28 Feb 2012 19:23:36 +0000

(Eco)Flex Resistor

In this project I attempted to fabricate my own silicone rubber flex resistor.

Mixing different concentrations of carbon fibers and graphite powder into a Platunim Cure Silicone Rubber I was able to make a soft resistor that would change its Resistance according to bending and/or pressure applied to it.

Tested concentrations

Carbon fiber:

2.5 phr (parts per hundred rubber) – very conductive

5 phr – Very conductive

Could continue testing lower concentrations of carbon fibers

Graphite :

50 phr – silicone did not set at this concentration

25 phr- silicone did not set at this concentration

12.5 phr- resistor was not conductive enough

Could test a concentration between 25 and 12.5 phr

Photos:

Videos:

Velostat Resistor -

Ecoflex Flex/Pressure Resistor 1 -

Ecoflex Flex/Pressure Resistor 2 -

Arduino Code used:

int sensorPin = A5;

int sensorValue;

int internalLED = 13;

int LED1 = 9;

int LED2 = 10;

int LED3 = 11;

int LED4 = A2;

void setup() {

pinMode(sensorPin, INPUT);

digitalWrite(sensorPin, HIGH); //turns on the internal pull-up resistor

pinMode(internalLED, OUTPUT);

pinMode(LED1, OUTPUT);

pinMode(LED2, OUTPUT);

pinMode(LED3, OUTPUT);

pinMode(LED4, OUTPUT);

digitalWrite(internalLED, HIGH);

Serial.begin(9600);

}

void loop() {

sensorValue=analogRead(sensorPin);

Serial.println(sensorValue);

delay(100);

if (sensorValue < 70)

{

digitalWrite(LED1, HIGH);

if (sensorValue <60)

{

digitalWrite(LED2, HIGH);

if (sensorValue <55)

{

digitalWrite(LED3, HIGH);

if (sensorValue <50)

{

digitalWrite(LED4, HIGH);

}

else

digitalWrite(LED4, LOW);

}

else

{

digitalWrite(LED3, LOW);

digitalWrite(LED4, LOW);

}

else

{

digitalWrite(LED2, LOW);

digitalWrite(LED3, LOW);

digitalWrite(LED4, LOW);

}

else {

digitalWrite(LED1, LOW);

digitalWrite(LED2, LOW);

digitalWrite(LED3, LOW);

digitalWrite(LED4, LOW);

}

Color Changing Textile

ManuelDSP — Tue, 14 Feb 2012 04:21:55 +0000

YellowGreen Tree

This project consists of a circuit made with stainless steel yarn. The Yarn is threaded through the fabric to form the silhouette of a tree and the fabric is then painted green, using blue thermochromic paint, yellow acrylic and fabric medium. When The circuit is completed and the yarn heats up, the blue disappears and the green paint turns to yellow.

Calculations:

1) Needed Resistance

V = I*R

V = 3.7 V

I = 100 mA = 0.1 A

R = 3.7 / 0.1 = 37 Ω

2) Measured Resistance

Trace 1 - 1.1 Ω

Trace2 - 6.3 Ω

Total = 7.4 Ω

3) Measured Voltage in Battery

3.96 V

4) Calculated Current

I = V/R

I = 3.96/7.4 = 0.54 A = 540 mA

5) Measured Current

176.7 mA

6) Photos and Video

IMG_0183_xvid