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Effects of defects in laser additive manufactured Ti-6Al-4V on fatigue properties
Citation Link: https://doi.org/10.15480/882.2766
Publikationstyp
Journal Article
Date Issued
2014
Sprache
English
Institut
TORE-DOI
TORE-URI
Journal
Volume
56
Start Page
371
End Page
378
Citation
Physics Procedia C (56): 371-378 (2014-01-01)
Contribution to Conference
Publisher DOI
Scopus ID
Publisher
Elsevier
Laser Additive Manufacturing (LAM) enables economical production of complex lightweight structures as well as patient individual implants. Due to these possibilities the additive manufacturing technology gains increasing importance in the aircraft and the medical industry. Yet these industries obtain high quality standards and demand predictability of material properties for static and dynamic load cases. However, especially fatigue and crack propagation properties are not sufficiently determined. Therefore this paper presents an analysis and simulation of crack propagation behavior considering Laser Additive Manufacturing specific defects, such as porosity and surface roughness. For the mechanical characterization of laser additive manufactured titanium alloy Ti-6Al-4V, crack propagation rates are experimentally determined and used for an analytical modeling and simulation of fatigue. Using experimental results from HCF tests and simulated data, the fatigue and crack resistance performance is analyzed considering material specific defects and surface roughness. The accumulated results enable the reliable prediction of the defects influence on fatigue life of laser additive manufactured titanium components.
Subjects
Crack propagation
El Haddad and Topper
Fatigue properties
High cycle fatigue
Kitagawa-Takahashi diagram
Laser Additive Manufacturing
Titanium alloy Ti-6Al-4V
DDC Class
620: Ingenieurwissenschaften
More Funding Information
German Federal Ministry of Education and Research (BMBF)
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