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The Effects Of Virgin And Recycled PA12 Powders In SLS Processes On Occupational Exposures

Particulate matter and ultrafine particles are emitted during the pre-processing and post-processing activities of selective laser sintering (SLS) processes, which is major concern to operators exposed to the powders. This study aims to determine the occupational exposure (in terms of the total part...

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Main Authors: Muhamad Damanhuri, Amir Abdullah, Mustafa, Mohd Syafiq Syazwan, Hariri, Azian, Ab Ghani, Sharin, Herawan, Safarudin Ghazali, Paiman, Nuur Azreeb
Format: Article
Language:English
Published: International Journal of Environmental Science and Development 2021
Online Access:http://eprints.utem.edu.my/id/eprint/25508/2/THE%20EFFECTS%20OF%20VIRGIN%20AND%20RECYCLED%20PA12%20POWDERS%20IN%20SLS%20PROCESSES%20ON%20OCCUPATIONAL%20EXPOSURES.PDF
http://eprints.utem.edu.my/id/eprint/25508/
http://www.ijesd.org/vol12/1359-IJESD-1995.pdf
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spelling my.utem.eprints.255082022-02-28T11:26:32Z http://eprints.utem.edu.my/id/eprint/25508/ The Effects Of Virgin And Recycled PA12 Powders In SLS Processes On Occupational Exposures Muhamad Damanhuri, Amir Abdullah Mustafa, Mohd Syafiq Syazwan Hariri, Azian Ab Ghani, Sharin Herawan, Safarudin Ghazali Paiman, Nuur Azreeb Particulate matter and ultrafine particles are emitted during the pre-processing and post-processing activities of selective laser sintering (SLS) processes, which is major concern to operators exposed to the powders. This study aims to determine the occupational exposure (in terms of the total particle concentration and respirable particulate concentration) during the pre-processing and post-processing activities of SLS processes using virgin and recycled polyamide 12 (PA12) powders. Personal air sampling was performed for each activity according to the NIOSH 0500 and NIOSH 0600 methods. Based on the results, both powders were uniform spheres with a particle size of 40–60 µm. The total particulate concentration was most significant during the following pre-processing activities: 1) pouring powder into the mixing machine and 2) transferring the powder to the SLS AM machine. The total particulate concentration and respirable particulate concentration were slightly higher for the virgin powder for these activities. In conclusion, the virgin and recycled PA12 powders were both inhalable and respirable, which poses serious health hazards to the SLS AM operators. Hence, it is essential for operators to use suitable personal protective equipment (including respirators) and the working practices need to be improved by automating some activities prevent manual powder handling. International Journal of Environmental Science and Development 2021-11 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/25508/2/THE%20EFFECTS%20OF%20VIRGIN%20AND%20RECYCLED%20PA12%20POWDERS%20IN%20SLS%20PROCESSES%20ON%20OCCUPATIONAL%20EXPOSURES.PDF Muhamad Damanhuri, Amir Abdullah and Mustafa, Mohd Syafiq Syazwan and Hariri, Azian and Ab Ghani, Sharin and Herawan, Safarudin Ghazali and Paiman, Nuur Azreeb (2021) The Effects Of Virgin And Recycled PA12 Powders In SLS Processes On Occupational Exposures. International Journal of Environmental Science and Development, 12 (11). pp. 339-345. ISSN 2010-0264 http://www.ijesd.org/vol12/1359-IJESD-1995.pdf 10.18178/IJESD.2021.12.11.1359
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
description Particulate matter and ultrafine particles are emitted during the pre-processing and post-processing activities of selective laser sintering (SLS) processes, which is major concern to operators exposed to the powders. This study aims to determine the occupational exposure (in terms of the total particle concentration and respirable particulate concentration) during the pre-processing and post-processing activities of SLS processes using virgin and recycled polyamide 12 (PA12) powders. Personal air sampling was performed for each activity according to the NIOSH 0500 and NIOSH 0600 methods. Based on the results, both powders were uniform spheres with a particle size of 40–60 µm. The total particulate concentration was most significant during the following pre-processing activities: 1) pouring powder into the mixing machine and 2) transferring the powder to the SLS AM machine. The total particulate concentration and respirable particulate concentration were slightly higher for the virgin powder for these activities. In conclusion, the virgin and recycled PA12 powders were both inhalable and respirable, which poses serious health hazards to the SLS AM operators. Hence, it is essential for operators to use suitable personal protective equipment (including respirators) and the working practices need to be improved by automating some activities prevent manual powder handling.
format Article
author Muhamad Damanhuri, Amir Abdullah
Mustafa, Mohd Syafiq Syazwan
Hariri, Azian
Ab Ghani, Sharin
Herawan, Safarudin Ghazali
Paiman, Nuur Azreeb
spellingShingle Muhamad Damanhuri, Amir Abdullah
Mustafa, Mohd Syafiq Syazwan
Hariri, Azian
Ab Ghani, Sharin
Herawan, Safarudin Ghazali
Paiman, Nuur Azreeb
The Effects Of Virgin And Recycled PA12 Powders In SLS Processes On Occupational Exposures
author_facet Muhamad Damanhuri, Amir Abdullah
Mustafa, Mohd Syafiq Syazwan
Hariri, Azian
Ab Ghani, Sharin
Herawan, Safarudin Ghazali
Paiman, Nuur Azreeb
author_sort Muhamad Damanhuri, Amir Abdullah
title The Effects Of Virgin And Recycled PA12 Powders In SLS Processes On Occupational Exposures
title_short The Effects Of Virgin And Recycled PA12 Powders In SLS Processes On Occupational Exposures
title_full The Effects Of Virgin And Recycled PA12 Powders In SLS Processes On Occupational Exposures
title_fullStr The Effects Of Virgin And Recycled PA12 Powders In SLS Processes On Occupational Exposures
title_full_unstemmed The Effects Of Virgin And Recycled PA12 Powders In SLS Processes On Occupational Exposures
title_sort effects of virgin and recycled pa12 powders in sls processes on occupational exposures
publisher International Journal of Environmental Science and Development
publishDate 2021
url http://eprints.utem.edu.my/id/eprint/25508/2/THE%20EFFECTS%20OF%20VIRGIN%20AND%20RECYCLED%20PA12%20POWDERS%20IN%20SLS%20PROCESSES%20ON%20OCCUPATIONAL%20EXPOSURES.PDF
http://eprints.utem.edu.my/id/eprint/25508/
http://www.ijesd.org/vol12/1359-IJESD-1995.pdf
_version_ 1726795993431670784
score 13.211869

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