[Back]


Contributions to Books:

B. Sagbas, M.N. Durakbasa:
"Industrial Computed Tomography for Nondestructive Inspection of Additive Manufactured Parts";
in: "Proceedings of the International Symposium for Production Research 2019, Lecture Notes in Mechanical Engineering (LNME)", 1; Springer Nature Switzerland AG, Cham, 2019, ISBN: 978-3-030-31342-5, 481 - 490.



English abstract:
Powder bed fusion technology is one of the additive manufacturing
methods that build up near net-shape complex parts from powder form of the
material. Direct Metal Laser Sintering (DMLS) and Selective Laser Sintering
(SLS) are primary powder bed fusion technology methods for metal and polymer
materials respectively. AlSi10Mg is one of the most widely used materials
in DMLS applications while polyamide 2200 (PA) is frequently used in high
quality functional parts production and various prototyping in SLS applications.
By developing technology, AM has begun to provide solution for generating
final products with complex geometries. Dimensional and structural inspection
of the AM parts without any destruction has become important issue in parallel
with the development of the manufacturing technology. Industrial X-Ray
Computed Tomography (X-CT) is one of the promising methods that provide
opportunity to nondestructive inspection of inner structure and porosity of AM
manufactured part. In this study, nondestructive porosity measurement of
DMLS manufactured AlSi10Mg test part and SLS manufactured PA 2200
functional part were applied by X-CT method. Density of manufactured parts
was calculated by measured volume data. Moreover, density of AlSi10Mg part
was defined by Archimedes method and the results were compared with each
other. It can be concluded that X-CT was an effective technique to define
porosity and pore distribution of the AM parts in comparison with Archimedes
porosity measurements.

Keywords:
Additive manufacturing Industrial X-CT Non-destructive inspection Porosity measurement Quality control 1 Introduction


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1007/978-3-030-31343-2


Created from the Publication Database of the Vienna University of Technology.