Comparability of the performance of in-line computer vision for geometrical verification of parts, produced by Additive Manufacturing

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    Abstract

    The field of Additive Manufacturing is growing at an accelerated rate, as prototyping is left in favor of direct manufacturing of components for the industry and consumer. A consequence of masscustomization and component complexity is an adverse geometrical verification challenge. Mass-customized parts with narrow geometrical tolerances require individual verification whereas many hyper-complex parts simply cannot be measured by traditional means such as by optical or mechanical measurement tools. This paper address the challenge by detailing how in-line computer vision has been employed in order to verify geometrical tolerances, The paper addresses to which precision, tolerance verification has been achieved, by assessing the reconstruction capability against reference 3D scanning by a selected number of AM processes. Geometrical verification was achieved down to a precision of 20μm for ideal AM processes, whereas the thermally driven SLM due to thermal warpage, resulting in a reconstruction accuracy of 400 μm.
    Original languageEnglish
    Title of host publicationProceedings of the 2014 ASPE Spring Topical Meeting : Dimensional Accuracy and Surface Finish in Additive Manufacturing
    PublisherAmerican Society for Precision Engineering
    Publication date2014
    Pages179-183
    ISBN (Print)9781887706643
    Publication statusPublished - 2014
    Event2014 ASPE Spring Topical Meeting: Dimensional Accuracy and Surface Finish in Additive Manufacturing - University of California, Berkeley, United States
    Duration: 13 Apr 201416 Apr 2014

    Conference

    Conference2014 ASPE Spring Topical Meeting
    LocationUniversity of California
    Country/TerritoryUnited States
    CityBerkeley
    Period13/04/201416/04/2014

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