Skip to main content
Erschienen in: The International Journal of Advanced Manufacturing Technology 9-10/2022

07.04.2022 | ORIGINAL ARTICLE

Effects of voids and raster orientations on fatigue life of notched additively manufactured PLA components

verfasst von: Soran Hassanifard, Kamran Behdinan

Erschienen in: The International Journal of Advanced Manufacturing Technology | Ausgabe 9-10/2022

Einloggen

Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.

search-config
loading …

Abstract

In this study, the fatigue life of notched polylactic acid (PLA) samples fabricated through the fused deposition modeling (FDM) technique was studied experimentally and numerically. The volumetric method based on the theory of critical distance was employed for fatigue life predictions. The effects of influential process parameters including raster orientation and FDM-induced defects such as voids or gaps inside the parts were examined on the fatigue strength reduction factors and fatigue lives. Circular and elliptical-shaped notch geometries were considered with various dimensions. Fatigue tests were conducted on notched and un-notched samples at the load ratio of 0.1. Predicted results were compared with experimental fatigue test data. Results revealed that the raster orientation parameter had a substantial impact on fatigue strength reduction factors and fatigue lives. The stress concentrations induced by the FDM process on the surfaces and inside the parts for the samples with 90° raster angles acted similar to the sharp notches, resulting in no substantial difference in fatigue life of notched and un-notched 3D-printed samples. In contrast, un-notched 3D-printed specimens with 0° raster orientations possessed higher fatigue lives as compared to the notched samples. While the volumetric approach efficiently predicted the fatigue lives of the samples with 90° raster orientations, it moderately underpredicted the fatigue lives of the samples with 0° raster angles.

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Literatur
20.
Zurück zum Zitat Ahmed AA, Susmel L (2019) Static assessment of plain/notched polylactide (PLA) 3D-printed with different infill levels: equivalent homogenised material concept and Theory of Critical Distances. Fatigue Fract Eng Mater Struct 42:883–904. https://doi.org/10.1111/ffe.12958CrossRef Ahmed AA, Susmel L (2019) Static assessment of plain/notched polylactide (PLA) 3D-printed with different infill levels: equivalent homogenised material concept and Theory of Critical Distances. Fatigue Fract Eng Mater Struct 42:883–904. https://​doi.​org/​10.​1111/​ffe.​12958CrossRef
28.
Zurück zum Zitat Dowling NE (2003) Mechanical behavior of materials, engineering methods for deformation, fracture, and fatigue, 4th edn. Angshuman Chakraborty Dowling NE (2003) Mechanical behavior of materials, engineering methods for deformation, fracture, and fatigue, 4th edn. Angshuman Chakraborty
29.
Zurück zum Zitat Smith KN, Watson P, Topper T (1970) A stress strain function for the fatigue of metals. J Eng Mater Technol 5(4):767–778 Smith KN, Watson P, Topper T (1970) A stress strain function for the fatigue of metals. J Eng Mater Technol 5(4):767–778
31.
Zurück zum Zitat Neuber H (1961) Translation theory of notch stresses, principles for exact stress calculations. 1958, US Office of Technical Services, Springer, Washington, DC Neuber H (1961) Translation theory of notch stresses, principles for exact stress calculations. 1958, US Office of Technical Services, Springer, Washington, DC
32.
Zurück zum Zitat Peterson RE (1959) Notch sensitivity. In: Sines G, Waisman JL (eds) Metal Fatigue, pp 293–306 Peterson RE (1959) Notch sensitivity. In: Sines G, Waisman JL (eds) Metal Fatigue, pp 293–306
35.
Zurück zum Zitat Pluvinage G (2004) Fracture and fatigue emanating from stress concentrators. Kluwer Academic Publishers Pluvinage G (2004) Fracture and fatigue emanating from stress concentrators. Kluwer Academic Publishers
Metadaten
Titel
Effects of voids and raster orientations on fatigue life of notched additively manufactured PLA components
verfasst von
Soran Hassanifard
Kamran Behdinan
Publikationsdatum
07.04.2022
Verlag
Springer London
Erschienen in
The International Journal of Advanced Manufacturing Technology / Ausgabe 9-10/2022
Print ISSN: 0268-3768
Elektronische ISSN: 1433-3015
DOI
https://doi.org/10.1007/s00170-022-09169-1

Weitere Artikel der Ausgabe 9-10/2022

The International Journal of Advanced Manufacturing Technology 9-10/2022 Zur Ausgabe

    Marktübersichten

    Die im Laufe eines Jahres in der „adhäsion“ veröffentlichten Marktübersichten helfen Anwendern verschiedenster Branchen, sich einen gezielten Überblick über Lieferantenangebote zu verschaffen.