3-D-printing with steel: Additive manufacturing of connection elements

Feucht, Thilo; Lange, Jörg

doi:10.1201/9780429426506-75

Cited by 6 publications

(4 citation statements)

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“…So, because of its features, this material is attracting great interest also in the field of additive manufacturing [ 13 ], further increasing in this way the possible applications in different fields of engineering, in particular in the production of mechanical and structural parts [ 32 ]. In particular, in the field of structural engineering, the production of certain elements such as dampers, connections and reinforcements for metal structures using 3D printing technology represents a new stimulating challenge to extend the traditional frontiers in structures [ 40 , 41 , 62 , 63 ].…”

Section: Materials and Testing Methodsmentioning

confidence: 99%

“…Another use concerned the introduction of stiffeners with optimized shapes useful for avoiding buckling phenomena in the flanges, printed directly on the component to be strengthened. Also in the field of metallic connections, another study showed the creation of a beam-beam connection with an end plate, obtained with topological optimization and 3D printed using WAAM [ 41 , 42 ]. In addition, a connection for aluminium profiles using the WAAM technology was also created [ 43 ].…”

Section: Introductionmentioning

confidence: 99%

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3D-printed metals: Process parameters effects on mechanical properties of 17-4 P H stainless steel

Andreacola

Capasso

Langella

et al. 2023

Heliyon

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Section: Materials and Testing Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D-printed metals: Process parameters effects on mechanical properties of 17-4 P H stainless steel

Andreacola

Capasso

Langella

et al. 2023

Heliyon

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“…In addition to geometric optimization of cross sections, the topic of stability is becoming the focus of current research in WAAM-manufactured elements. Initial investigations at the TU Darmstadt [6] and recent studies at Imperial College provide the first indications of component behaviour for slender components at risk of flexural buckling under compressive loading [7].…”

Section: Waam As a Tool For Manufacturing Steel Columnsmentioning

confidence: 99%

Robot supported Wire Arc Additive Manufacturing of Steel Columns

Waldschmitt,

Lange

2023

ce papers

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Wire Arc Additive Manufacturing (WAAM) is a robot‐controlled welding process used to build up three‐dimensional structures in steel. Like other Additive Manufacturing (AM) technologies, WAAM allows for geometrically‐complex structures to be manufactured which may be unfeasible using conventional methods. Over recent years, WAAM has also gained prominence in the fields of architecture and civil engineering, with applications ranging from fully‐printed steel bridges to individualized steel components. This paper presents the additive manufacturing process of large‐scale applications, focusing on steel columns with circular hollow cross‐sections (CHS). The paper highlights the specific features of the necessary welding and process parameters before the manufacturing process is described in detail. Digital models and welding trajectories are generated with Parametric Robot Programming (PRP) and serve the robot‐controlled printing process. The AM itself is monitored by multiple process‐control checks giving information about resulting weld thicknesses, heights and welding errors influencing the manufacturing strategy of the CHS columns. To be able to make a closing statement about the load‐bearing capacity of the WAAM‐manufactured CHS, final load tests on (stub) columns are carried out.

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“…1). Although there is wide research interest in the study of the outcomes from the "continuous" printing [13][14][15][16][17][18], the dot-by-dot strategy is a quite innovative (and still almost unexplored) technique [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Experimental behaviour of Wire‐and‐Arc Additively Manufactured stainless steel rods

et al. 2021

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Recently, metal Additive Manufacturing has gained great importance in many industrial sectors with first pioneering applications in also in the Construction field. In particular, a weld‐based technique called Wire‐and‐Arc Additive Manufacturing (WAAM) allows to build real‐scale structural elements of complex geometry thanks to 6‐axes robotic arms and off‐the‐shelf welding equipment able to print at higher speed thus overcoming the geometrical constraints typical of other 3D printing technologies such as Powder Bed Fusion. Nonetheless, the printing outcomes need to be properly characterized both in terms of their specific material properties, which substantially differ from the feedstock, and the geometrical imperfections proper of the printing process. Among possible deposition strategy for WAAM the dot‐by‐dot printing results to be particularly suitable to realize metal 3D lattice structures made by straight rods. This novel dot‐by‐dot printing could bring to different mechanical parameters with respect to the layer‐by‐layer deposition (widely known and studied in the literature and already adopted for first practical applications). This work presents the first results of a wide experimental investigation carried out at University of Bologna to study the geometrical imperfections and the main mechanical properties (through tensile and compression tests) of WAAM‐produced stainless steel rods of different lengths. First indications are given on the influence of the rods length on the compression capacity Future work is aimed at quantifying the influence of geometrical irregularities (initial crookedness and cross‐section variation) and non‐linear material behavior in the compression response of 3D‐printed rods through numerical studies to calibrate a set of ad‐hoc buckling curves.

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3-D-printing with steel: Additive manufacturing of connection elements

Cited by 6 publications

References 0 publications

3D-printed metals: Process parameters effects on mechanical properties of 17-4 P H stainless steel

3D-printed metals: Process parameters effects on mechanical properties of 17-4 P H stainless steel

Robot supported Wire Arc Additive Manufacturing of Steel Columns

Experimental behaviour of Wire‐and‐Arc Additively Manufactured stainless steel rods

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