AngkurHarika TankasalaMalar Chellasivalingam
Published

Visualising the Honeycomb Conjecture

In-situ 3D-visualisation (using micro-CT) of natural honeycombs shows that the hexagonal cells are actually circular at birth.

AdvancedWork in progress591
Visualising the Honeycomb Conjecture

Things used in this project

Hardware components

Maker Board Starter Kit
Maker Board Starter Kit
×1
Arduino UNO
Arduino UNO
×1
Ultrasonic Sensor - HC-SR04 (Generic)
Ultrasonic Sensor - HC-SR04 (Generic)
×1
Soil Moisture & Temperature Sensor
Seeed Studio Soil Moisture & Temperature Sensor
×1
Rocker Switch, Non Illuminated
Rocker Switch, Non Illuminated
×1
Buzzer
Buzzer
×1
RGB Backlight LCD - 16x2
Adafruit RGB Backlight LCD - 16x2
×1
Jumper wires (generic)
Jumper wires (generic)
×1
Dino-Lite digital handheld microscope (AM4113ZT)
×1

Software apps and online services

XOD IDE
Arduino IDE
Arduino IDE
VG Studio Max 2.2
MATLAB
MATLAB
ImageJ

Hand tools and fabrication machines

XT H 225 ST – Industrial CT scanning
The XT H 225 ST is a Computed Tomography (CT) system ideally suited to a wide range of materials and sample sizes, especially those that are too large or heavy for other systems in the range. the system has three interchangeable sources; the 225 kV reflection target, 180 kV transmission target and the optional 225 kV rotating target. Combined with the wide range of flat panel detectors to choose from, the ST system provides a flexible tool for quality laboratories, production facilities and research departments.
Roland Desktop CNC Milling Machine

Story

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Custom parts and enclosures

Experiment rig for in-situ mechanical testing during X-ray CT

This is a three point loading rig custom designed to fit into an X-ray machine for performing mechanical characterisation like fracture toughness measurements. The elastic properties of the honeycomb can be measured. Initial tests were conducted on a 3D printed octet truss lattice. A manual instruction for using the setup is provided.

Schematics

Sensor and data collection system

Code

Ultrasonic position sensor with Arduino

Arduino
To read data from ultrasonic position sensor
/* 
* Biomaker Project: Visualising the Honeycomb Conjecture
* Ultrasonic Sensor HC-SR04 and Arduino
*
*/

// defines pins 
const int trigPin = 2;
const int echoPin = 3;

// defines variables
long duration;
int distance;

void setup() {
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
Serial.begin(10000); // Starts the serial communication
}

void loop() {
// Clears the trigPin
digitalWrite(trigPin, LOW);
delayMicroseconds(5);

// Sets the trigPin on HIGH state for 10 micro seconds
digitalWrite(trigPin, HIGH);
delayMicroseconds(15);
digitalWrite(trigPin, LOW);

// Reads the echoPin, returns the sound wave travel time in microseconds
duration = pulseIn(echoPin, HIGH);

// Calculating the distance
distance= duration*0.034/2;

// Prints the distance on the Serial Monitor
Serial.print("Distance: ");
Serial.println(distance);
}

Credits

Angkur

Angkur

1 project • 1 follower
2nd year PhD, Engineering Department, University of Cambridge
Harika Tankasala

Harika Tankasala

0 projects • 1 follower
Malar Chellasivalingam

Malar Chellasivalingam

0 projects • 1 follower
PhD student, Department of Engineering, University of Cambridge

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