Assessment of nanoparticle emission in additive manufacturing: Comparing wire and powder laser metal deposition processes.
Additive manufacturing (AM), often referred to as 3D printing, is an emerging technology with a wide range of industrial applications and process typologies. Although the release of metal nanoparticles as by-products could occur, occupational exposure limits and cogent safety standards are not curre...
| Published in: | Journal of Occupational & Environmental Hygiene Vol. 20; no. 8; pp. 329 - 336 |
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| Main Authors: | , , , |
| Format: | research tables/charts Journal Article |
| Published: |
Taylor & Francis Ltd
Aug2023
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=170023543&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 170023543 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15459624 V1L jtl: Journal of Occupational & Environmental Hygiene issn: 15459624 maglogo: Y pubinfo: dt: Aug2023 vid: 20 iid: 8 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 170023543 163355693 170023543 170023543 10.1080/15459624.2023.2208649 170023543 ppf: 329 ppct: 7 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Assessment of nanoparticle emission in additive manufacturing: Comparing wire and powder laser metal deposition processes. aug: au: Pernetti, Roberta Maffia, Simone Previtali, Barbara Oddone, Enrico affil: Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Pavia, Italy sug: subj: Nanoparticles Environmental Exposure Lasers Printing, Three-Dimensional Occupational Health Occupational Safety Risk Management Human Air Pollution, Indoor Built Environment Descriptive Statistics ab: Additive manufacturing (AM), often referred to as 3D printing, is an emerging technology with a wide range of industrial applications and process typologies. Although the release of metal nanoparticles as by-products could occur, occupational exposure limits and cogent safety standards are not currently available due to the novelty of the technology. To support the definition of benchmarks, this study aims to provide a preliminary comparison between the nanoparticle release patterns of laser metal deposition, adopting different feedstocks, namely, metal wire and metal powder. The monitored device is a university research setup, and the work presents the results of two different processes with AISI 316 L as a feedstock in powder and wired form, respectively. The monitoring confirmed the outcomes of previous studies, with a high release of nanoparticles from the powder head on the device (average 138,713 n/cm3 during printing, with maximum values exceeding 106 n/cm3). Moreover, the results show a significant concentration of nanoparticles with a wire head during the printing phase (average release of 628,156 n/cm3 with a maximum of 1,114,987 n/cm3) and pauses (average of 32,633 n/cm3 and a maximum of 733,779 n/cm3). The monitored values during pauses are particularly relevant since no personal protection equipment was used in the wire processes and the operators could access the printing room during pauses for device interventions, thus being exposed to significant nanoparticle concentrations. This study presents a preliminary evaluation of the potential exposure during laser metal deposition while implementing different technologies and provides evidence for defining effective operational safety procedures for the operators. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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