About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
The Failure of Wire-arc Additive Manufactured Aluminum Alloys With Porosities Under Loadings as Observed by In-situ X-ray Micro-computed Tomography |
Author(s) |
Runyu Zhang, Yuxin Jiao, Christopher Paniagua, Yi Tian, Hongbing Lu, Wei Li |
On-Site Speaker (Planned) |
Runyu Zhang |
Abstract Scope |
Wire-arc additive manufactured aluminum alloys (WAAM 4043 Aluminum) are widely used in many industries. Porosities are known to exist within the WAAM aluminum alloys, which greatly reduces the usability and reliability of such parts. In this study, WAAM aluminum alloy specimens with porosities are manufactured using a Fronius (TPS 320i) MIG/MAG welding and ABB (IRB 140) robot system. The mechanical performance of the specimens with porosities is evaluated under the three-point bending and tension using in-situ X-ray micro-computed tomography (μCT). The μCT system with an integrated mechanical loading frame provides in-situ volumetric images of the specimens while loadings are applied. The failure of the WAAM aluminum specimens and the propagation of the internal porosities are observed and assessed. This work provides direct experimental observations and evaluations of the influence of porosities on the mechanical behavior of WAAM aluminum alloys under loadings. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |