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dc.contributor.authorBaruffi, F.
dc.contributor.authorGülçür, Mert
dc.contributor.authorCalaon, M.
dc.contributor.authorRomano, J.-M.
dc.contributor.authorPenchev, P.
dc.contributor.authorDimov, S.
dc.contributor.authorWhiteside, Benjamin R.
dc.contributor.authorTosello, G.
dc.date.accessioned2019-11-13T08:25:22Z
dc.date.available2019-11-13T08:25:22Z
dc.date.issued2019-11
dc.identifier.citationBaruffi F, Gülçür M, Calaon M et al (2019) Correlating nano-scale surface replication accuracy and cavity temperature in micro-injection moulding using in-line process control and high-speed thermal imaging. Journal of Manufacturing Processes. 47: 367-381.en_US
dc.identifier.urihttp://hdl.handle.net/10454/17436
dc.descriptionYesen_US
dc.description.abstractMicro-injection moulding (μIM) stands out as preferable technology to enable the mass production of polymeric components with micro- and nano-structured surfaces. One of the major challenges of these processes is related to the quality assurance of the manufactured surfaces: the time needed to perform accurate 3D surface acquisitions is typically much longer than a single moulding cycle, thus making impossible to integrate in-line measurements in the process chain. In this work, the authors proposed a novel solution to this problem by defining a process monitoring strategy aiming at linking sensitive in-line monitored process variables with the replication quality. A nano-structured surface for antibacterial applications was manufactured on a metal insert by laser structuring and replicated using two different polymers, polyoxymethylene (POM) and polycarbonate (PC). The replication accuracy was determined using a laser scanning confocal microscope and its dependence on the variation of the main μIM parameters was studied using a Design of Experiments (DoE) experimental approach. During each process cycle, the temperature distribution of the polymer inside the cavity was measured using a high-speed infrared camera by means of a sapphire window mounted in the movable plate of the mould. The temperature measurements showed a high level of correlation with the replication performance of the μIM process, thus providing a fast and effective way to control the quality of the moulded surfaces in-line.en_US
dc.description.sponsorshipMICROMAN project (“Process Fingerprint for Zero-defect Net-shape MICRO MANufacturing”, http://www.microman.mek.dtu.dk/) - H2020 (Project ID: 674801), H2020 agreement No. 766871 (HIMALAIA), H2020 ITN Laser4Fun (agreement No. 675063)en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1016/j.jmapro.2019.08.017en_US
dc.rights© 2019 Elsevier. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/)en_US
dc.subjectMicro-injection mouldingen_US
dc.subjectFlow visualisationen_US
dc.subjectSurface replicationen_US
dc.subjectIn-line quality assuranceen_US
dc.titleCorrelating nano-scale surface replication accuracy and cavity temperature in micro-injection moulding using in-line process control and high-speed thermal imagingen_US
dc.status.refereedYesen_US
dc.date.Accepted2019-08-20
dc.date.application2019-10-22
dc.typeArticleen_US
dc.date.EndofEmbargo2020-10-23
dc.type.versionAccepted manuscripten_US
dc.description.publicnotesThe full-text of this article will be released for public view at the end of the publisher embargo on 23 Oct 2020.en_US
refterms.dateFOA2019-11-13T08:28:44Z


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