Gibhardt, DennisDennisGibhardtKrauklis, Andrey E.Andrey E.KrauklisDoblies, AudriusAudriusDobliesGagani, Abedin I.Abedin I.GaganiSabalina, AlisaAlisaSabalinaStarkova, OlesjaOlesjaStarkovaFiedler, BodoBodoFiedler2022-12-202022-12-202023-01-15Polymer Testing 118: 107901 (2023-01-15)http://hdl.handle.net/11420/14429Epoxies and epoxy-based fiber reinforced polymers (FRP) are significantly affected by environmental impacts during their service life. Exposures to water, humidity, temperature and UV radiation are known to substantially influence the (thermo-) mechanical properties and durability of the materials. Design-relevant characteristics like strength, stiffness, or the glass transition temperature change with time. Therefore, expensive test campaigns are often necessary in advance of a structural design. Prediction models based on physical relations or phenomenological observations are typically required to reduce costs and increase reliability. Consequently, a combined methodology for fast prediction of long-term properties and accelerated aging purposes is presented in this work for a common DGEBA-based epoxy. Therefore, master curves are obtained by creep and constant-strain-rate tests under temperature and moisture impact. A combined time–temperature–water superposition and the Larson–Miller parametrization demonstrate that time-saving CSR tests and modeling can replace long-lasting creep testing. Resulting, the presented methodology allows to determine a polymer's entire (environmental) failure envelope in a relatively short time and with low testing effort.en0142-94182023Elsevier Sciencehttps://creativecommons.org/licenses/by/4.0/Accelerated testingCompositeCreepStrengthThermo-mechanical behaviorPhysikChemieJournal Article10.15480/882.497310.1016/j.polymertesting.2022.10790110.15480/882.4973Journal Article