| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing: Equipment, Instrumentation and Measurement
|
| Presentation Title |
Mechanical In-situ µCT Testing of Lattice Structures Manufactured by Selective Laser Melting |
| Author(s) |
Pascal Pinter, Stefan Dietrich, Lukas Englert |
| On-Site Speaker (Planned) |
Pascal Pinter |
| Abstract Scope |
In the present contribution, a lattice structure was manufactured additively in the shape of a dog-bone sample and tested using a micro computed tomography (CT) in-situ stage. Tensile tests were conducted in order to evaluate the local and global stiffness. Therefore, digital volume correlation (DVC) was utilized to match CT images of different load steps by calculating a transformation from one load step to the other. This geometrical transformation was then used to evaluate the predominant strain tensor on different scales of the structure.
Our study shows that the strain tensor can be derived from DVC tests and used to calculate the local stiffness of the structure. Recommendations for parameter selection will be given to receive valuable results and reduce noise. Moreover, it is shown how DVC can be used to detect damage, such as cracks and other singularities that appear during testing. |