Browsing by Subject "inspection process"
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Item A SPHERICAL TEST ARTIFACT TO EVALUATE THREE-DIMENSIONAL FORM ACCURACY FOR WIRE ARC ADDITIVE MANUFACTURING(University of Texas at Austin, 2023) Ko, S.; Sagawa, T.; Yamagata, Y.; Aoki, S.; Abe, T.Additive manufacturing, including the wire arc additive manufacturing (WAAM), is gradually gaining attraction, and providing benefits in the aerospace and construction industries. In both industries, large-scale manufacturing capability and quality consistency of manufactured 3D parts are crucial. As part of quality evaluation, test artifacts for the geometric capability assessment are specified in ISO/ASTM52902-2019(E). On the other hand, the test artifact for curved wall is left undefined. This paper proposes a spherical shell shape as a representative of three-dimensional shapes that are supportless and feature large overhangs, for testing the geometric capability of a WAAM equipment. A mechanical configuration and deposition strategy are considered, which owns the potential to universally applying for depositing large-scale parts. A quality evaluation process for the sphere deposition was also described and experimentally demonstrated.