• search hit 11 of 12
Back to Result List

Porosity distribution in laser-sintered polymeric thin sheets as revealed by X-ray micro tomography

  • Laser Sintering (LS) is an additive manufacturing technology that is progressively used to manufacture functional products for end-use applications. However, LS technology provides limited ability to produce thin-walled structures that feature high material quality. A key parameter determining the quality of LS polymeric parts is porosity. This article presents a new approach towards clarifying the porosity characteristics of thin-walled structures produced by LS. Therefore, thin sheets of different thickness built in different orientations within the building chamber are examined by means of X-ray micro tomography. The porosity analysis includes the overall porosity, pore number density, pore size distribution and porosity distribution along the thickness of the thin sheets. The results show that the porosity characteristics strongly depend on the thickness and the build orientation of the thin sheets. This investigation helps to estimate the quality of three dimensional hollow bodies produced by LS and moreover, contributes to aLaser Sintering (LS) is an additive manufacturing technology that is progressively used to manufacture functional products for end-use applications. However, LS technology provides limited ability to produce thin-walled structures that feature high material quality. A key parameter determining the quality of LS polymeric parts is porosity. This article presents a new approach towards clarifying the porosity characteristics of thin-walled structures produced by LS. Therefore, thin sheets of different thickness built in different orientations within the building chamber are examined by means of X-ray micro tomography. The porosity analysis includes the overall porosity, pore number density, pore size distribution and porosity distribution along the thickness of the thin sheets. The results show that the porosity characteristics strongly depend on the thickness and the build orientation of the thin sheets. This investigation helps to estimate the quality of three dimensional hollow bodies produced by LS and moreover, contributes to a better understanding of the pore formation in LS processes.show moreshow less

Export metadata

Additional Services

Search Google Scholar
Metadaten
Author:Anna LiebrichORCiD, Horst-Christian LangowskiORCiDGND, Regina SchreiberORCiD, Bernd R. PinzerORCiD
DOI:https://doi.org/10.1016/j.polymertesting.2019.02.014
Identifier:0142-9418 OPAC HS OPAC extern
Parent Title (English):Polymer Testing
Publisher:Elsevier
Place of publication:Amsterdam
Document Type:Article
Language:English
Date of Publication (online):2019/04/02
Year of first Publication:2019
Tag:laser sintering; porosity; porosity distribution; thin sheets; thin-walled structures; x-ray micro tomography
Volume:Volume 76
Issue:July 2019
Number of pages:12 Seiten
First Page:286
Last Page:297
Institutes:KLEVERTEC
IMS - Institut für Maschinelles Sehen
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften
Research focus:FSP2: Mobilität
FSP3: Produktion
Publication Lists:Pinzer, Bernd
Schreiber, Regina
Publication reviewed:begutachtet
Release Date:2020/09/07
Verstanden ✔
Diese Webseite verwendet technisch erforderliche Session-Cookies. Durch die weitere Nutzung der Webseite stimmen Sie diesem zu. Unsere Datenschutzerklärung finden Sie hier.