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Evaluation of 3D-printed parts by means of high-performance computer tomography

: Lopez, Elena; Felgueiras, Tomás; Grunert, Christian; Brückner, Frank; Riede, Mirko; Seidel, André; Marquardt, Axel; Leyens, Christoph; Beyer, Eckhard

Fulltext urn:nbn:de:0011-n-4842310 (808 KByte PDF)
MD5 Fingerprint: 20a7151bf9a284f00556af5ba33c04e1
Created on: 09.11.2018

Laser Institute of America -LIA-:
ICALEO 2017, 36th International Congress on Applications of Lasers & Electro-Optics. Online resource : October 22-26, 2017
Orlando, Fla.: LIA, 2017
ISBN: 978-1-940168-14-2
10 pp.
International Congress on Applications of Lasers & Electro-Optics (ICALEO) <36, 2017, Atlanta/Ga.>
Bundesministerium für Bildung und Forschung BMBF
Zwanzig20; AGENT-3D
Conference Paper, Electronic Publication
Fraunhofer IWS ()

Conventional tactile and optical testing methods are not capable to detect complex inner geometries or complex surface shapes. Detecting porosities in parts is also not possible with those nondestructive methods. Among other material parameters, geometrical accuracy is essential to determine part’s quality. Additive Manufacturing (AM) processes also have to be optimized regarding geometry deviations caused by distortion or unfavorable orientation in the build chamber. For additive manufactured parts that incorporate previously mentioned features, high-performance computer tomography is the more suitable nondestructive testing method. Components of different materials like plastics, ceramics, composites, or metals can be completely characterized. This nondestructive testing method was used for porosity analysis regarding the shape and local distribution of pores in an additive manufactured part to find correlations concerning the most suitable process conditions. The measured part data was also compared to original CAD files to determine zones of deviation and apply specific process strategies to avoid distortion. This paper discusses the results of integrating high-performance computer tomography (power: 500 W, max. part size: Ø 300 mm, 300x430 mm²) in a production-like environment of additively manufactured parts for a wide range of technologies (i.e. Electron Beam Melting and Selective Laser Melting).