Prethodno priopćenje
https://doi.org/10.18048/2022.04.03
Prolonged Real Marine Environment Exposure of Composite Marine Structures
Goran Vizentin
orcid.org/0000-0001-8711-7102
; University of Rijeka, Faculty of Maritime Studies, Marine Engineering Department, Studentska 2, Rijeka, Croatia
Goran Vukelić
; University of Rijeka, Faculty of Maritime Studies, Marine Engineering Department, Studentska 2, Rijeka, Croatia
Sažetak
As fiber reinforced polymer (FRP) composites become ever more established construction materials
in the marine industry sector the influence of the harsh environmental operational conditions and
its consequence on failure prediction of such structures is an imperative. Coupons of epoxy/glass
and polyester/glass with various fiber layout configurations have been submerged under the sea for
prolonged periods (6 and 12 months) in order to assess the impact on mechanical behavior of the
material exposed to real marine environment as opposed to the more commonly adopted artificially
produced laboratory sea environment and accelerated testing. Changes in mass, marine microbiology
growth, tensile strength and morphological structures were analyzed after submersion and compared
with samples exposed to room environment. All coupons have shown mass increase due to seawater
absorption and microorganism growth in the organic resins matrices. The dynamic and level of change
in tensile strength proved to be dependent on the fiber layout configuration. Optical and scanning
electron microscopical investigation performed showed significant matrix morphological changes
primarily due to salt crystal formation and the impact of sea microorganisms embedding in the resin.
The collected experimental data will be used to develop a more realistic environmental input parameters
for structural modeling of marine structures.
Ključne riječi
FRP composites; marine environment; marine structures durability
Hrčak ID:
278659
URI
Datum izdavanja:
24.4.2022.
Posjeta: 408 *