Temat: natural fiber composites - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of water absorption on the mechanical properties of flax fiber reinforced epoxy composites
Autorzy:: Huner, U
Powiązania:: https://bibliotekanauki.pl/articles/101996.pdf
Data publikacji:: 2015
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: natural fiber
mechanical properties
epoxy composites
Opis:: Flax fiber reinforced epoxy composites were subjected to water immersion tests in order to study the effects of water absorption on the mechanical properties. Epoxy composites specimens containing 0, 1, 5 and 10% fiber weight were prepared. Water absorption tests were conducted by immersing specimens in a deionized water bath at 25 °C and 90 °C for different time durations. The tensile and flexural properties of water immersed specimens subjected to both aging conditions were evaluated and compared alongside dry composite specimens. The percentage of moisture uptake increased as the fiber volume fraction increased due to the high cellulose content. The tensile and flexural properties of reinforced epoxy specimens were found to decrease with increase in percentage moisture uptake. Moisture induced degradation of composite samples was significant at elevated temperature.
Źródło:: Advances in Science and Technology. Research Journal; 2015, 9, 26; 1-6
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Study of the Performance of Natural Fiber Reinforced Composites for Wind Turbine Blade Applications
Autorzy:: Batu, Temesgen
Lemu, Hirpa G
Sirhabizuh, Belete
Powiązania:: https://bibliotekanauki.pl/articles/102545.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: natural fiber
reinforced composites
wind turbine blade
Qblade
włókno naturalne
wzmocniony kompozyt
łopatka turbiny wiatrowej
Opis:: The availability of some form of energy is essential for the human survival and social development. However, the way energy has been generated within the last century has brought forward the quest for the generation of energy without polluting the environment, which is nowadays considered to be the greatest global challenge. The materials used for wind turbine blades can be classified under this challenge of polluting the environment. One of the materials expected to reduce this problem is natural fiber reinforced composite (FRC). Thus, the focus of this paper was to evaluate the potential of different natural FRC materials for small wind turbine blade application. Eleven different natural fibers reinforced composite in epoxy resin were studied. A modified Halphin-Tsai semi-empirical model was used to compute the physical properties of the composites, since it has a good agreement with the experimental results. Stress, deformation, and weight of wind turbine blade under different loadings were analyzed aimed to search for a fiber type that may extend the life span of the blade. Finally, flap wise and edge wise, the longitudinal and torsional natural frequencies were computed numerically by using the finite element method in the Qblade software (QFEM) under different mode types and the effects were analysed. Upon comparing the results with a common composite material for wind turbine blade (E-glass/epoxy), it was observed that the selected natural fiber composites have equivalent and better mechanical performance. The environmental friendliness of natural fibers, i.e. biodegradability, constitutes their advantage as materials of wind turbine blades.
Źródło:: Advances in Science and Technology. Research Journal; 2020, 14, 2; 67-75
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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