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Environmental effects on composites durability with regard to fibers, matrix, and interphase
Citation Link: https://doi.org/10.15480/882.9468
Publikationstyp
Doctoral Thesis
Date Issued
2024
Sprache
English
Author(s)
Advisor
Referee
Title Granting Institution
Technische Universität Hamburg
Place of Title Granting Institution
Hamburg
Examination Date
2024-04-05
Institute
TORE-DOI
First published in
Number in series
46
Citation
Technische Universität Hamburg (2024)
The proposed work is based on aging experiments on composites and their single constituents (fibers, matrix resins, fiber sizings, and interphases). The effects of the aging temperature and the specific materials used were investigated. Prediction models for strength and lifetime were derived. The first chapter focuses on the change of the thermo-mechanical material properties of epoxies. It could be demonstrated that plasticization and physical aging co-occur and oppositional affect the major properties epoxy strength and ductility. The second part focuses on the aging effects on GFRP composites and the importance of the fiber and sizing constitution for the lifetime under environmental degradation. Therefore, a novel fiber aging methodology was developed and implemented to manufacture composites with artificially aged fiber/matrix interphases.
Subjects
Environmental Aging
Glass Fiber Reinforced Polymers
Physical Aging
Mechanical Properties
Sizing
Fiber/Matrix Interphase
DDC Class
620.1: Engineering Mechanics and Materials Science
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Name
Dissertation_Dennis_Gibhardt_Environmental_Effects_on_Composites_Durability.pdf
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172.63 MB
Format
Adobe PDF