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dc.contributor.authorZhang, Xuanen_US
dc.contributor.authorNguyen, Ngoc-Vuen_US
dc.contributor.authorTran, Tuanen_US
dc.contributor.editorN. Shamsaeien_US
dc.contributor.editorM. Seifien_US
dc.identifier.citationZhang, X., Nguyen, N. & Tran, T. (2022). Conversion of in-process optical and thermal data into a single 3D file representing printing process in powder bed fusion. N. Shamsaei & M. Seifi (Eds.), Progress in Additive Manufacturing 2020 (pp. 75-91). ASTM International.
dc.description.abstractRapid development of additive manufacturing (AM) technologies leads to an increasing demand for quality control of printed parts. While in-process monitoring systems and post-testing technologies have been developed to inspect the part quality, there is not yet a well-established method that specifies the procedures and requirements to convert the extracted in-process layer-wise information into a single 3D file for quality evaluation and control. In this study, an off-axial imaging system utilizing optical and thermal cameras is deployed to acquire in-process optical and thermal images of the Powder Bed Fusion (PBF) process. Image registration and analyses are then performed on the acquired images to extract the in-process layer-wise data (e.g., coordinates, gray value, and temperature) associated with the printing process. Based on a comparison of file formats commonly used in industrial software, we select the Extensible Markup Language (XML) file format, which is specified by post-processing software, and further propose procedures for constructing a single 3D file from the in-process data to represent the printing process and evaluate the printing quality. This work provides guidelines for conversion of in-process data into 3D files and contributes to in-process monitoring and quality control of AM manufactured parts.en_US
dc.publisherASTM Internationalen_US
dc.rightsThis is the accepted version of an article published in Progress in Additive Manufacturing 2020, Copyright @ 2022, ASTM International, West Conshohocken, PA, 75-91, STP163720210019.en_US
dc.subjectEngineering::Mechanical engineeringen_US
dc.titleConversion of in-process optical and thermal data into a single 3D file representing printing process in powder bed fusionen_US
dc.typeBook Chapteren_US
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.contributor.researchSingapore Centre for 3D Printingen_US
dc.description.versionSubmitted/Accepted versionen_US
dc.relation.ispartofbookProgress in Additive Manufacturing 2020en_US
dc.subject.keywordsAdditive Manufacturingen_US
dc.subject.keywordsIn-Process Monitoringen_US
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