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Polypropylene numerical photoageing simulation by dose-response functions with respect to irradiation and temperature: vipquali project

  • The aim of the joint project ViPQuali (Virtual Product Qualification) was to describe a component’s ageing behaviour in a given environment, by numerical simulation. Having chosen polypropylene (PP) as the material, which does not show sensitivity to moisture, the relevant weathering parameters of the dose–response functions could be limited to spectral irradiance and temperature. In artificial irradiation tests, for PP plates of varied stabiliser content, spectral sensitivity as well as temperature dependence of irradiation-caused crack formation was quantified. For that purpose, samples were exposed both to artificial weathering tests at various constant temperatures and to spectrally resolved irradiation. The temperature dependence could be modelled by an Arrhenius fit. For fitting the spectral sensitivity, a plateau function was chosen. Subsequently, the stabiliser content was parameterised and extrapolated. The formed dose–response functions were incorporated into aThe aim of the joint project ViPQuali (Virtual Product Qualification) was to describe a component’s ageing behaviour in a given environment, by numerical simulation. Having chosen polypropylene (PP) as the material, which does not show sensitivity to moisture, the relevant weathering parameters of the dose–response functions could be limited to spectral irradiance and temperature. In artificial irradiation tests, for PP plates of varied stabiliser content, spectral sensitivity as well as temperature dependence of irradiation-caused crack formation was quantified. For that purpose, samples were exposed both to artificial weathering tests at various constant temperatures and to spectrally resolved irradiation. The temperature dependence could be modelled by an Arrhenius fit. For fitting the spectral sensitivity, a plateau function was chosen. Subsequently, the stabiliser content was parameterised and extrapolated. The formed dose–response functions were incorporated into a Computational Fluid Dynamics (CFD) software program, simulating the environment of a sample within a Phoenix-exposed IP/DP (Instrument Panel/Door Panel box) box, based on sun position and weather conditions, including radiation interactions. Observed local effects as well as the general ageing advance of PP hats are compared with respect to simulation and experiment. Resulting from this project, for this most simple example of PP of varied stabiliser content, the time to failure can be estimated for each weathering exposure environment with known time-resolved irradiance and temperature conditions.zeige mehrzeige weniger

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  • For plastic packaging, both weathering and Chemical exposure are well known, slow-going damaging scenarios, which themselves are sufficiently covered in relevant transport regulations, but treated there separately.pdf
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Metadaten
Autor*innen:Anja Geburtig, Volker WachtendorfORCiD, P. Trubiroha, M. Zäh, A. Schönlein, A. Müller, T. Vatahska, G. Manier, T. Reichert
Persönliche Herausgeber*innen:C. C. White, J. Martin, J.T. Chapin
Dokumenttyp:Buchkapitel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Service life prediction of exterior plastics - Vision for the future
Jahr der Erstveröffentlichung:2015
Verlag:Springer
Erste Seite:Chapter 14, 215
Letzte Seite:229
DOI:10.1007/978-3-319-06034-7_14
ISBN:978-3-319-06033-0
ISBN:978-3-319-06034-7
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Nein
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