The re-design of a sustainable monocoque shell for ultra high frequency transmitting radios
Jutila, Lauri (2020)
2020
Materiaalitekniikan DI-tutkinto-ohjelma - Degree Programme in Materials Engineering, MSc (Tech)
Tekniikan ja luonnontieteiden tiedekunta - Faculty of Engineering and Natural Sciences
This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.
Hyväksymispäivämäärä
2020-04-14
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202003192754
https://urn.fi/URN:NBN:fi:tuni-202003192754
Tiivistelmä
In modern days, the impact of human activities to the ecosystem of the world have caused many countries and companies to seek new ways to lower their environmental impact. The rapid industrial development and economic growth combined with the ad-vancements in technology have had their price paid towards the environment in a nega-tive way. Due to this fact, a range of investments, initiatives, and regulations have been made to lower the environmental impact caused by the society.
During the 20th century, the usage of fibre reinforced polymer composites has been increasing due to the developments in composite technologies. With these high-performance materials, we have been able to manufacture objects with a low weight combined with high mechanical performance. My work was to re-design a radome shell structure for the Luxturrim5G project using advanced long-fibre reinforced composites: manufacturing of ‘sustainable prototype’ for the project, re-design it through the materi-als selection, and testing novel sustainable composite materials. In the thesis, especially the biodegradation-related properties were under a focus, so the chosen testing method for the novel composite was chosen to be soil burial. The composites used during the work were a type of natural fibre reinforced polymers that used flax fibres as reinforcing element.
The fabrication of the prototype of the sustainable CRU was done by the data re-ceived from the Luxturrim5G project and the prototype was showcased during the Lux-turrim5Gs project finale, The Impact Day, held in Nokia premises in Karaportti, to demonstrate the usage of alternative composite materials. The NFRPs pose certain problems in their long-term durability in atmospheric conditions. However, these prob-lems can be somewhat avoided with the proper treatments. During the soil burial, deg-radation can be seen in the composites which would affect the long-term durability. In the work, it was observed that the rosin had positive effect on the biodeterioration.
During the 20th century, the usage of fibre reinforced polymer composites has been increasing due to the developments in composite technologies. With these high-performance materials, we have been able to manufacture objects with a low weight combined with high mechanical performance. My work was to re-design a radome shell structure for the Luxturrim5G project using advanced long-fibre reinforced composites: manufacturing of ‘sustainable prototype’ for the project, re-design it through the materi-als selection, and testing novel sustainable composite materials. In the thesis, especially the biodegradation-related properties were under a focus, so the chosen testing method for the novel composite was chosen to be soil burial. The composites used during the work were a type of natural fibre reinforced polymers that used flax fibres as reinforcing element.
The fabrication of the prototype of the sustainable CRU was done by the data re-ceived from the Luxturrim5G project and the prototype was showcased during the Lux-turrim5Gs project finale, The Impact Day, held in Nokia premises in Karaportti, to demonstrate the usage of alternative composite materials. The NFRPs pose certain problems in their long-term durability in atmospheric conditions. However, these prob-lems can be somewhat avoided with the proper treatments. During the soil burial, deg-radation can be seen in the composites which would affect the long-term durability. In the work, it was observed that the rosin had positive effect on the biodeterioration.