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Design and Parameter Identification of Wire and Arc Additively Manufactured (WAAM) Steel Bars for Use in Construction

Institut für Füge- und Schweißtechnik, TU Braunschweig, Langer Kamp 8, 38106 Braunschweig, Germany
Institut für Stahlbau, TU Braunschweig, Beethovenstraße 51, 38106 Braunschweig, Germany
Institut für Tragwerksentwurf, TU Braunschweig, Pockelstraße 4, 38106 Braunschweig, Germany
Authors to whom correspondence should be addressed.
Metals 2019, 9(7), 725;
Received: 6 June 2019 / Revised: 25 June 2019 / Accepted: 25 June 2019 / Published: 27 June 2019
(This article belongs to the Special Issue Additive Manufacturing of Metals)
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Additive manufacturing (AM) in industrial applications benefits from increasing interest due to its automation potential and its flexibility in manufacturing complex structures. The construction and architecture sector sees the potential of AM especially in the free form design of steel components, such as force flow optimized nodes or bionic-inspired spaceframes. Robot-guided wire and arc additive manufacturing (WAAM) is capable of combining a high degree of automation and geometric freedom with high process efficiency. The build-up strategy (layer by layer) and the corresponding heat input influence the mechanical properties of the WAAM products. This study investigates the WAAM process by welding a bar regarding the build-up geometry, surface topography, and material properties. For tensile testing, an advanced testing procedure is applied to determine the strain fields and mechanical properties of the bars on the component and material scale. View Full-Text
Keywords: additive manufacturing; construction; WAAM; welding; steel; ESPI; design additive manufacturing; construction; WAAM; welding; steel; ESPI; design

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Müller, J.; Grabowski, M.; Müller, C.; Hensel, J.; Unglaub, J.; Thiele, K.; Kloft, H.; Dilger, K. Design and Parameter Identification of Wire and Arc Additively Manufactured (WAAM) Steel Bars for Use in Construction. Metals 2019, 9, 725.

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