Modeling of interlayer contact and contact pressure during fused filament fabrication
| العنوان: | Modeling of interlayer contact and contact pressure during fused filament fabrication |
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| المؤلفون: | David Kazmer, Timothy J. Coogan |
| المصدر: | Journal of Rheology. 63:655-672 |
| بيانات النشر: | Society of Rheology, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Materials science, 010304 chemical physics, Fused deposition modeling, Mechanical Engineering, Rheometer, Nozzle, Fused filament fabrication, Condensed Matter Physics, 01 natural sciences, law.invention, Pressure measurement, Mechanics of Materials, law, 0103 physical sciences, General Materials Science, Wetting, Composite material, 010306 general physics, Confined space, Layer (electronics) |
| الوصف: | An in-line rheometer and data acquisition system are used to monitor the melt pressure, melt temperature, and environmental temperatures while producing parts via fused filament fabrication (FFF). Melt pressures are observed to increase when printing parts with small layer heights, which is attributed to the confined space created between the nozzle and the previous layer (i.e., an exit pressure). These exit pressures (referred to as contact pressure) and the resulting interlayer contact areas are analyzed for 2863 layers created at 21 different processing conditions. The measured contact pressure was found to directly influence the shape of the layers and the resulting interlayer contact. An intimate contact model based on contact pressure is combined with a wetting model to accurately predict the interlayer contact of FFF parts. This pressure-driven intimate contact model for FFF shows strong agreement with the observed interlayer contact. No theoretical model has previously existed for predicting interlayer contact, so this research provides a critical component for developing a comprehensive part strength model. Both the measurements and proposed model are sufficiently simple and accurate for real-time analysis of FFF quality, so the described in-line sensors provide valuable quality insights and are recommended for future researchers, printer manufacturers, and end-users. |
| تدمد: | 1520-8516 0148-6055 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::2c894ac92d4659d171991436633c6ef2Test https://doi.org/10.1122/1.5093033Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........2c894ac92d4659d171991436633c6ef2 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15208516 01486055 |
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