Fire resistance of additively manufactured water filled polymer parts
| Autor: | Stephen Anthony Harris, Hadley Laurence Brooks, Andrew Fsadni, Chris Wright |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Work (thermodynamics)
Materials science H710 Biomedical Engineering Fluid mechanics 02 engineering and technology Calorimetry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering Finite element method 0104 chemical sciences law.invention Adiabatic flame temperature Ignition system law Thermal General Materials Science Composite material H141 0210 nano-technology Engineering (miscellaneous) H150 Intumescent |
| Zdroj: | Additive Manufacturing. 22:138-145 |
| ISSN: | 2214-8604 2214-7810 |
| Popis: | This paper introduces the concept of additively manufactured (AM) water filled parts (WFPs). By combining the energy absorbing properties of water with polymers, it is possible to significantly improve the time to ignition of AM parts with open internal structures. Theory relating the flame temperature to the maximum wall temperature of WFPs is developed. A range of water-polymer configurations are presented as a basis for WFP designs. Three separate thermal experiments were conducted to test different aspects of the WFPs. The time to ignition for cone calorimetry samples was extended 794% over plain photopolymers. Case studies were used to demonstrate the effectiveness of WFPs with complex shapes. The results of thermo-fluid finite element simulations showed good agreement with experimental observations and provide a useful tool for the evaluation and optimisation of WFP designs. The fire resistance of thin walled structures with internal water volumes was found to be significantly improved. The water filling strategy was found to be more effective than adding intumescent coatings. Finally further work and recommendations are discussed. |
| Databáze: | OpenAIRE |
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