نبذة مختصرة : Danes na različnih področjih vse bolj strmimo k lažjim konstrukcijam z odličnimi mehanskimi lastnostmi. V ta namen je potrebno ojačati tudi desko za jadranje z aramidnimi vlakni, da bi bila odpornejša pri padcih na trde površine. Pri tem se je porodilo vprašanje, kako mehanske lastnosti aramidnih vlaken, s katerimi želimo ojačati desko, vplivajo na togost deske in v kolikšni meri pripomorejo k odpornosti na udarce. Da bi odgovorili na zastavljeno vprašanje, smo izvedli dva testa, in sicer upogibni ter udarni test, na katerih smo testirali štiri različne vzorce. Večina vzorcev je bila sestavljena iz polimerne matrice, ki smo jo ojačali s kombinacijo ogljikovih in aramidnih vlaken. Rezultati so pokazali, da se v primeru uporabe aramidnih vlaken togost deske zmanjša, s pomočjo udarnih testov pa smo ugotovili, da dodatek aramidnih vlaken pri izbranih debelinah kompozita izboljša udarno žilavosti deske. ; Today, there is a growing trend toward lighter constructions with excellent mechanical properties. For this reason, it is also necessary to produce a windsurfing board, which would be reinforced with aramid fibers to increase its resistance during falls on hard surfaces. However, this raised the question of how the combination of the aramid and carbon fibers would affect the stiffness of the windsurfing board and to what extent the aramid fibers would contribute to the impact resistance. To solve this problem, two types of tests were performed, a bending test and an impact test, on which four different samples were examined. Most of the samples were prepared in combination with carbon fibers and aramid fibers in a polymer binder. The results showed that the use of aramid fibers reduces the stiffness of the board. Moreover, at selected composite thicknesses, the aramid fibers do contribute to impact toughness.
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