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

GND
1190372436
Affiliation
Institut für Füge- und Schweißtechnik, TU Braunschweig
Müller, Johanna;
GND
1190373378
Affiliation
Institut für Stahlbau, TU Braunschweig
Grabowski, Marcel;
GND
114878540X
Affiliation
Institut für Tragwerksentwurf, TU Braunschweig
Müller, Christoph;
ORCID
0000-0002-1843-6473
Affiliation
Institut für Füge- und Schweißtechnik, TU Braunschweig
Hensel, Jonas;
GND
1190374226
Affiliation
Institut für Stahlbau, TU Braunschweig
Unglaub, Julian;
ORCID
0000-0002-5367-5840
Affiliation
Institut für Stahlbau, TU Braunschweig
Thiele, Klaus;
GND
120917262
Affiliation
Institut für Tragwerksentwurf, TU Braunschweig
Kloft, Harald;
ORCID
0000-0002-6139-4993
Affiliation
Institut für Füge- und Schweißtechnik, TU Braunschweig
Dilger, Klaus

Additive manufacturing (AM) in industrial applications benefits fromincreasing 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 eciency. The build-up strategy (layer by layer) and the corresponding heat input influence the mechanical properties of theWAAM 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.

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