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Publisher DOI: 10.1016/j.phpro.2014.08.120
Title: Effects of defects in laser additive manufactured Ti-6Al-4V on fatigue properties
Language: English
Authors: Wycisk, Eric 
Solbach, Andreas 
Siddique, Shafaqat 
Herzog, Dirk 
Walther, Frank 
Emmelmann, Claus 
Keywords: Crack propagation;El Haddad and Topper;Fatigue properties;High cycle fatigue;Kitagawa-Takahashi diagram;Laser Additive Manufacturing;Titanium alloy Ti-6Al-4V
Issue Date: 2014
Publisher: Elsevier
Source: Physics Procedia C (56): 371-378 (2014-01-01)
Journal or Series Name: Physics procedia 
Abstract (english): © 2014 The Authors. Published by Elsevier B.V. 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.
Conference: 8th International Conference on Photonic Technologies LANE 2014 
DOI: 10.15480/882.2766
ISSN: 1875-3892
Institute: Laser- und Anlagensystemtechnik G-2 
Type: (wissenschaftlicher) Artikel
Funded by: German Federal Ministry of Education and Research (BMBF)
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