Work in progress!!
Introduction
In this page, an open-source LIBS-core scanner is described. LIBS (Laser-Induced Breakdown Spectroscopy) is a form of atomic emission spectroscopy where a low energy but high power density laser pulse is used to ablate a small amount of material and turn it into plasma. When cooling down, the excess energy is emitted as photons with discrete energy states. From this light the elemental composition of the sample can be determined.
All the .scad and .stl files will be shared as soon as they are printed and tested.
The design is based on https://www.thingiverse.com/thing:11653/#files and http://www.appropedia.org/Open-source_laser_system_for_polymeric_welding
Designer
Lasse Kangas, Aalto University, Department of Civil Engineering
Project
Concept
Mechanical Parts
2 x MakerSlide - 25142-04 1800 mm
1 x MakerSlide - 25142-03 1000 mm
12 x Dual Bearing V-Wheel Kit - 25203-06
3 x Standard Wheel Carriage Plate - 25200-01
5400 mm 45x45 mm aluminium extrusion (Norcan)
6 x Eccentric Spacer - 25195-01
Aluminum Spacers - 25312-13
Button Head Cap Screw - 25286-05
Plastic MXL Pulley - Dual Flange - 25204-02
MXL Belting - Open Ended - 25205-01
Printable Parts
Laser casing
Fiber holder
Optics holders
Steppermotor mounts
3 x Belt braice to carriage
Electronics
Arduino Mega 2560 R3
Adafruit Motor/Stepper/Servo Shield for Arduino v2 kit - v2.3
SN754410 H-Bridge Motor Driver
Stepper motor - NEMA-17 size - 200 steps/rev, 12V 350mA
Optical Endstop Light Control Limit Switch for 3D Printer - RED
Power Source 5/12V
Estimated Costs
Frame and sliders:
2 x MakerSlide 1800 mm = 58€
MakerSlide 1000 mm = 20€
12 x Dual Bearing V-Wheel Kit = 53€
3 x Standard Wheel Carriage Plate = 19.5€
5400 mm 45x45 mm aluminium extrusion (Norcan) = 95€
6 x Eccentric Spacer - 25195-01 = $12
Aluminum Spacers - 25312-13 = $2.99
Button Head Cap Screw - 25286-05 = $2.99
Plastic MXL Pulley - Dual Flange - 25204-02 = $5.99
MXL Belting - Open Ended - 25205-01 = $1.99/12 in
Electronics/motors;
2 x Adafruit Motor/Stepper/Servo Shield for Arduino v2 Kit - v2.3 35.58€
Arduino Mega 2560 Microcontroller Rev3 28.50€
Arduino Shield Stacking Headers 1.74€
3 x [1] $44.85
2 x Optical Endstop Light Control Limit Switch for 3D Printer - RED