Material Characterization on 3D Printed Objects
Jul 10

Material Characterization on 3D Printed Objects

Helmond, The Netherlands, 2nd December 2019

The project regarding Material Characterization on 3D Printed Objects was started by MCPP Netherlands B.V. to gain more knowledge about mechanical data of 3D printed objects. Most data is only available for injection moulded specimens but 3D printed objects do not have the same isotropic(1) behaviour as injection moulded objects. Because of this anisotropic(2) behaviour it is useful to find a way to improve the tensile performance in the vertical print direction (Z-axis) so that 3D printing could become more interesting to use for applications which need parts that have good properties in both directions.

Each material that will be tested will follow the same procedure:

  1. A base profile is made using the MCPP Testing Methodology which results in visually beautiful prints.
  2. The tensile performance will be improved by researching the relation between specific parameters and the corresponding tensile properties. This is done by determining the best value per parameter followed by combining the optimal parameter settings. Each test has been carried out using a modified 1BA specimen following ISO527 testing both the horizontal print orientation (force applied in direction of the layers) and the vertical print orientation (force applied perpendicular to the layers).
  3. The resulting profile with a great tensile performance and a great print quality will be chosen as the optimized print profile for tensile performance.

    (1) Isotropic behaviour means that the object has the same properties in all directions.
    (2) Anisotropic behaviour means the object does not have the same properties in all directions, for example a 3D printed object is weaker vertically (Z-axis) than horizontally (XY-axis) due to the layer adhesion being the “weak link”.

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