Assessment of optical emission analysis for in-process monitoring of powder bed fusion additive manufacturing
Developing methods which allow real-time monitoring of powder bed fusion (PBF) additive manufacturing (AM) processes is key to enabling in situ assessments of build quality (e.g. lack of fusion and porosity). Here, we investigate the use of optical emission spectroscopy and high-speed (100 kHz) meas...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-01-01
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| Series: | Virtual and Physical Prototyping |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17452759.2017.1392683 |
| _version_ | 1797678682551091200 |
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| author | Alexander J. Dunbar Abdalla R. Nassar |
| author_facet | Alexander J. Dunbar Abdalla R. Nassar |
| author_sort | Alexander J. Dunbar |
| collection | DOAJ |
| description | Developing methods which allow real-time monitoring of powder bed fusion (PBF) additive manufacturing (AM) processes is key to enabling in situ assessments of build quality (e.g. lack of fusion and porosity). Here, we investigate the use of optical emission spectroscopy and high-speed (100 kHz) measurement of select wavelength emissions, based on a line-to-continuum approach, to determine if a correlation between PBF AM process inputs, sensor outputs, and build quality exists. Using an open protocol system interfaced with a 3D Systems ProX 200 machine, sensor data were synchronised with the scanner position and the laser state during the buildup of Inconel-718 components under varying powers, scan speeds, and hatch spacing parameters. Sensor measurements were then compared against post-build computed tomography scans. We show evidence that sensor data, when combined with appropriate analyses, are related to both processing conditions and build quality. |
| first_indexed | 2024-03-11T23:03:26Z |
| format | Article |
| id | doaj.art-3c893efe9c074e3ba6cbe2110f956743 |
| institution | Directory Open Access Journal |
| issn | 1745-2759 1745-2767 |
| language | English |
| last_indexed | 2024-03-11T23:03:26Z |
| publishDate | 2018-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj.art-3c893efe9c074e3ba6cbe2110f9567432023-09-21T13:56:59ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672018-01-01131141910.1080/17452759.2017.13926831392683Assessment of optical emission analysis for in-process monitoring of powder bed fusion additive manufacturingAlexander J. Dunbar0Abdalla R. Nassar1The Pennsylvania State UniversityThe Pennsylvania State UniversityDeveloping methods which allow real-time monitoring of powder bed fusion (PBF) additive manufacturing (AM) processes is key to enabling in situ assessments of build quality (e.g. lack of fusion and porosity). Here, we investigate the use of optical emission spectroscopy and high-speed (100 kHz) measurement of select wavelength emissions, based on a line-to-continuum approach, to determine if a correlation between PBF AM process inputs, sensor outputs, and build quality exists. Using an open protocol system interfaced with a 3D Systems ProX 200 machine, sensor data were synchronised with the scanner position and the laser state during the buildup of Inconel-718 components under varying powers, scan speeds, and hatch spacing parameters. Sensor measurements were then compared against post-build computed tomography scans. We show evidence that sensor data, when combined with appropriate analyses, are related to both processing conditions and build quality.http://dx.doi.org/10.1080/17452759.2017.1392683process optimisationsolid freeform fabricationin situ monitoringpowder bed fusioninconel 718 |
| spellingShingle | Alexander J. Dunbar Abdalla R. Nassar Assessment of optical emission analysis for in-process monitoring of powder bed fusion additive manufacturing Virtual and Physical Prototyping process optimisation solid freeform fabrication in situ monitoring powder bed fusion inconel 718 |
| title | Assessment of optical emission analysis for in-process monitoring of powder bed fusion additive manufacturing |
| title_full | Assessment of optical emission analysis for in-process monitoring of powder bed fusion additive manufacturing |
| title_fullStr | Assessment of optical emission analysis for in-process monitoring of powder bed fusion additive manufacturing |
| title_full_unstemmed | Assessment of optical emission analysis for in-process monitoring of powder bed fusion additive manufacturing |
| title_short | Assessment of optical emission analysis for in-process monitoring of powder bed fusion additive manufacturing |
| title_sort | assessment of optical emission analysis for in process monitoring of powder bed fusion additive manufacturing |
| topic | process optimisation solid freeform fabrication in situ monitoring powder bed fusion inconel 718 |
| url | http://dx.doi.org/10.1080/17452759.2017.1392683 |
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