DataVXJournal of Laser ApplicationsPaper
journal article·2014-11-01

Fundamental investigation of laser beam melting of polymers for additive manufacture

Tobias Laumer, Katrin Wudy, Maximilian Drexler, Philipp Amend, Stephan Roth, Dietmar Drummer, Michael Schmidt

Journal of Laser Applications· Volume 26· Issue 4
Publisher page
Source abstract

Abstract

By selective laser sintering (SLS), polymer powders are molten layer by layer to build conventional prototypes or parts in small series with geometrical freedom that cannot be achieved by other manufacturing technologies. The SLS process is mainly defined by the beam–matter interaction between powder material, laser radiation and different material characteristics by itself. However the determination of these different material characteristics is problematic because powder material imposes certain requirements that cannot sufficiently be provided by conventional measurement methods. Hence new fundamental investigation methods to determine the optical and thermal material characteristics like the thermal diffusivity, thermal conductivity, or the influence of different heating rates on the melting behavior are presented in this paper. The different analysis methods altogether improve the process of understanding to allow recommendations for the future process controlling.
Source: crossref · Quality: baseline

Research context

PolymersCeramics & glassesMaterials processing

OpenAlex topics: Additive Manufacturing and 3D Printing Technologies · Laser Material Processing Techniques · Injection Molding Process and Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

blz Bayerisches Laserzentrum GmbH , Erlangen, 91052 Germany ; SFB 814 Additive Fertigung, , 91054 Erlangen-Nürnberg, Germany ; and , 91052 Erlangen, Germany

Friedrich-Alexander-University , Erlangen, 91052 Germany ; SFB 814 Additive Fertigung, , 91054 Erlangen-Nürnberg, Germany ; and , 91052 Erlangen, Germany

SAOT Erlangen Graduate School in Advanced Optical Technologies , Erlangen, 91052 Germany ; SFB 814 Additive Fertigung, , 91054 Erlangen-Nürnberg, Germany ; and , 91052 Erlangen, Germany

Friedrich-Alexander-University SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany and , 91058 Erlangen-Nürnberg, Germany

LKT Institute of Polymer Technology Friedrich-Alexander-University SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany and , 91058 Erlangen-Nürnberg, Germany

Friedrich-Alexander-University SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany , 91052 Erlangen, Germany ; and , 91058 Erlangen-Nürnberg, Germany

; SAOT Erlangen Graduate School in Advanced Optical Technologies SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany , 91052 Erlangen, Germany ; and , 91058 Erlangen-Nürnberg, Germany

LKT Institute of Polymer Technology Friedrich-Alexander-University SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany , 91052 Erlangen, Germany ; and , 91058 Erlangen-Nürnberg, Germany

blz Bayerisches Laserzentrum GmbH , 91052 Erlangen, Germany and SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany

Friedrich-Alexander-University , 91052 Erlangen, Germany and SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany

blz Bayerisches Laserzentrum GmbH , 91052 Erlangen, Germany ; SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany ; , 91052 Erlangen, Germany ; and , , 91052 Erlangen-Nürnberg, Germany

Friedrich-Alexander-University , 91052 Erlangen, Germany ; SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany ; , 91052 Erlangen, Germany ; and , , 91052 Erlangen-Nürnberg, Germany

SAOT Erlangen Graduate School in Advanced Optical Technologies , 91052 Erlangen, Germany ; SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany ; , 91052 Erlangen, Germany ; and , , 91052 Erlangen-Nürnberg, Germany

LPT Institute of Photonic Technologies , 91052 Erlangen, Germany ; SFB 814 Additive Fertigung, , 91058 Erlangen-Nürnberg, Germany ; , 91052 Erlangen, Germany ; and , , 91052 Erlangen-Nürnberg, Germany

References (20)

Show source-provided references
1. 2007
2. T. Wohlers, Rapid prototyping—State of the industry, Wohlers Report 2009 (Wohlers Associates, USA, 2009).
3. Selektives Lasersintern von teilkristallinen Thermoplasten
4. Measurement of the absorption coefficient of freely poured one-component metallic powders and its change during laser sintering10.1007/BF02676008 ↗
5. Absorptance of powder materials suitable for laser sintering10.1108/13552540010337029 ↗
6. Laser penetration in a powder bed during selective laser sintering of metal powders
7. Reflectance and transmittance of TrueForm powder and its composites to CO2 laser10.1108/13552540710750924 ↗
8. Opitmierung des selektiven-laser-sinterns zur herstellung von feingussteilen für die luftfahrtindustrie
9. Einfluss der Scangeschwindigkeit auf die Bauteileigenschaften pulver- und strahlbasierter Verfahren
10. Selektives Lasersintern von teilkristallinen Thermoplasten
11. 1995
12. Thermal behavior of α nylon-1210.1002/pol.1980.180180619 ↗
13. Effect of casting conditions on polymorphism of nylon-1210.1002/pol.1980.180180212 ↗
14. The effect of process conditions on mechanical properties of laser-sintered nylon10.1108/13552541111184143 ↗
15. 1998
16. Technologie des selektiven lasersinterns von thermoplasten
17. Messung der Wärmeleitfähigkeit von Pulvern
18. G. Alscher, “Das verhalten teilkristalliner thermoplaste beim lasersintern,” PhD Thesis dissertation, Universität Essen, 2000.
19. Contact thermal conductivity of a powder bed in selective laser sintering10.1016/S0017-9310(02)00370-8 ↗
20. 2003