dc.identifier.uri |
http://dx.doi.org/10.15488/15231 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/15350 |
|
dc.contributor.author |
Hölscher, Lennart Vincent
|
|
dc.contributor.author |
Hassel, Thomas
|
|
dc.contributor.author |
Maier, Hans Jürgen
|
|
dc.date.accessioned |
2023-11-15T13:53:35Z |
|
dc.date.available |
2023-11-15T13:53:35Z |
|
dc.date.issued |
2023 |
|
dc.identifier.citation |
Hölscher, L.V.; Hassel, T.; Maier, H.J.: Development and evaluation of a closed-loop z-axis control strategy for wire-and-arc-additive manufacturing using the process signal. In: International Journal of Advanced Manufacturing Technology, The 128 (2023), Nr. 3-4, S. 1725-1739. DOI: https://doi.org/10.1007/s00170-023-12012-w |
|
dc.description.abstract |
Wire-and-arc-additive manufacturing (WAAM) is an additive manufacturing technology with a high deposition rate. WAAM usually employs a layer wise build-up strategy. This makes it necessary to know the height of each deposited layer to determine the height the z-axis has to travel after each layer. Current bead geometry models (BGM) lead to variations, which can gradually accumulate over the layers. The present study focuses on the development of a closed-loop control system capable of keeping the contact tube working distance (CTWD) constant during short-circuit gas metal arc welding (GMAW) based WAAM. The algorithm calculates the CTWD based on the resistance during the short circuit. The closed-loop strategy is compared to an open-loop control strategy, which moves along a predefined height step after each layer. Using the proposed control strategy, WAAM becomes a fully automated process without the need for preliminary experiments to determine the height step. Only a short calibration slope is necessary for a complete closed-loop additive build-up. To study the influence of the control strategy on the workpiece the energy input, mechanical strength, microhardness, porosity, and microstructure were analyzed. It is shown that the CTWD of the open-loop deposited component increases slowly. Due to the novel control approach, this is prevented by the closed-loop control, while the mechanical strength and microhardness remain. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
London : Springer |
|
dc.relation.ispartofseries |
International Journal of Advanced Manufacturing Technology, The 128 (2023), Nr. 3-4 |
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dc.rights |
CC BY 4.0 Unported |
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dc.rights.uri |
https://creativecommons.org/licenses/by/4.0 |
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dc.subject |
Closed-loop control |
eng |
dc.subject |
Gas-metal-arc welding |
eng |
dc.subject |
Height step |
eng |
dc.subject |
Process control |
eng |
dc.subject |
Wire-and-arc-additive manufacturing |
eng |
dc.subject.ddc |
670 | Industrielle und handwerkliche Fertigung
|
|
dc.title |
Development and evaluation of a closed-loop z-axis control strategy for wire-and-arc-additive manufacturing using the process signal |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
1433-3015 |
|
dc.relation.issn |
0268-3768 |
|
dc.relation.doi |
https://doi.org/10.1007/s00170-023-12012-w |
|
dc.bibliographicCitation.issue |
3-4 |
|
dc.bibliographicCitation.volume |
128 |
|
dc.bibliographicCitation.firstPage |
1725 |
|
dc.bibliographicCitation.lastPage |
1739 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|