Mechanical testing of polymer components made with the RepRap 3-D printer
| Developed by Michigan Tech's Open Sustainability Technology Lab. For more see MOST's Appropedia Hub.
Wanted: Graduate students interested in making a solar-powered open-source 3-D printing and distributed manufacturing future. Contact: Professor Joshua Pearce
|This page is part of an international project to use RepRap 3-D printing to make OSAT for sustainable development. Learn more.
Research: Feasibility hub • Mechanical testing • Open source 3-D printing of OSAT • RecycleBot • LCA of home recycling • LCA of distributed manufacturing • RepRap LCA Energy and CO2 • RepRap printing protocol: MOST• Lessons learned • MOST RepRap Build • MOST Prusa Build • MOST HS RepRap build • RepRap Print Server
The purpose of this project is to determine mechanical properties of polymer components printed with the open source RepRap Mendel 3-D printer. Standard test methods are to be used to gather accurate and acceptable test data. The results of the mechanical testing will be used for engineering analysis of parts designed to be created with the RepRap.
The results are published here: B.M. Tymrak, M. Kreiger, J. M. Pearce, Mechanical properties of components fabricated with open-source 3-D printers under realistic environmental conditions, Materials & Design, 58, pp. 242-246 (2014). http://dx.doi.org/10.1016/j.matdes.2014.02.038. [open access soon]
 Testing Standards
ASTM D638-10 Standard Test Method for Tensile Properties of Plastics
 Test Specimen
 Printer settings to test
All g-code will be generated using Slic3r software from http://slic3r.org/
|Layer Height||0.4mm, 0.3mm, 0.2mm|
|Fill Angle||0, 45|
|Solid Fill Pattern||Rectilinear|
 Test Equipment
- MTS Test System in M&M 413
- MTS Testworks Software on test machine computer
- Epsilon Technology 3542-0200-050-ST Extensometer
 Specimen to Test
 Naming Protocol
ie. (3-90-100-1 MTU) for 0.3 LH, 90 deg Fill Orientation, 100% Fill, Print #1, at MTU
 Base Testing
- 3 layer heights - .2, .3, .4; orientations 45, 90; 12 testing conditions; 10X each; 120 total tests.....
- 0.4mm 90 deg (10 printed) 45 deg (10 printed)
- 0.3mm 90 deg (10 printed) 45 deg (10 printed)
- 0.2mm 90 deg (10 printed) 45 deg (10 printed)
- 0.4mm 90 deg (10 printed) 45 deg (0 printed)
- 0.3mm 90 deg (0 printed) 45 deg (0 printed)
- 0.2mm 90 deg (0 printed) 45 deg (0 printed)
 See Also
- For electrical testing and for thermal conductivity :disc 2.5 inches in diameter that is 3.2 mm thick. 5X