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Diffusion of Seawater within Unidirectional Carbon/Vinylester
| Title: | Diffusion of Seawater within Unidirectional Carbon/Vinylester. |
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| Name(s): |
Fichera, Maryann Carlsson, Leif A. Graduate College |
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| Type of Resource: | text | |
| Genre: | Abstract | |
| Date Created: | 2014 | |
| Date Issued: | 2014 | |
| Publisher: | Florida Atlantic University | |
| Place of Publication: | Boca Raton, Fla. | |
| Physical Form: | application/pdf | |
| Extent: | 1 p. | |
| Language(s): | English | |
| Summary: | The objective of this work is to characterize the moisture transport in a unidirectional, transversely isotropic carbon/vinylester composite. Diffusion occurs when the material is immersed in sea water and the moisture is transported through the voids, and interface gaps. This uptake of moisture can cause problems including matrix degradation and swelling, reduction of fiber/matrix interface strength, etc. To characterize water transport, three diffusivities are required, D1, D2, and D3. However, transversely isotropic material can be characterized by two diffusivities, along and transverse to the fibers (D1=DL, and D2=D3=DT). Composite materials may absorb moisture along the fiber/matrix interface, especially if the ends of the fibers are exposed. This mechanism of moisture transport inside the composite is known as “wicking”, which would increase the value of DL. Wicking is promoted by voids and unbonded regions between the fiber and matrix. Experiments will be conducted on specimens made from vinylester resin reinforced with unidirectional carbon fibers. A range of specimens will be prepared and immersed in 40°C sea water. The moisture content will be monitored until maximum saturation. Previous studies indicate that the Fickian diffusion model is a reasonable descriptor of the moisture absorption process. From the plots of moisture content versus time1/2, the apparent diffusivity will be reduced for the different size panels. The longitudinal and transverse diffusivities will be determined using a Matlab algorithm. The amount of moisture absorbed into the composite due to wicking will be quantified from mass balance analysis and related to the longitudinal and transverse diffusivities. | |
| Identifier: | FA00005815 (IID) | |
| Collection: | FAU Student Research Digital Collection | |
| Note(s): | The Fifth Annual Graduate Research Day was organized by Florida Atlantic University’s Graduate Student Association. Graduate students from FAU Colleges present abstracts of original research and posters in a competition for monetary prizes, awards, and recognition | |
| Held by: | Florida Atlantic University Libraries | |
| Sublocation: | Digital Library | |
| Persistent Link to This Record: | http://purl.flvc.org/fau/fd/FA00005815 | |
| Use and Reproduction: | Copyright © is held by the author with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder. | |
| Host Institution: | FAU | |
| Is Part of Series: | Florida Atlantic University Digital Library Collections. |
