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Item type:Publication, Access status: with files , Environmental effects on composites durability with regard to fibers, matrix, and interphase(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.Publicationtype: Doctoral Thesis98 117