Time, temperature and water aging failure envelope of thermoset polymers

Epoxies and epoxy-based fiber reinforced polymers (FRP) are significantly affected by environmental impacts during their service life. Exposures to water, humidity, temperature UV radiation known substantially influence the (thermo-) mechanical properties durability of materials. Design-relevant characteristics like strength, stiffness, or glass transition change with time. Therefore, expensive test campaigns often necessary in advance a structural design. Prediction models based on physical relations phenomenological observations typically required reduce costs increase reliability. Consequently, combined methodology for fast prediction long-term accelerated aging purposes is presented this work common DGEBA-based epoxy. master curves obtained creep constant-strain-rate tests under moisture impact. A time–temperature–water superposition Larson–Miller parametrization demonstrate that time-saving CSR modeling can replace long-lasting testing. Resulting, allows determine polymer’s entire (environmental) failure envelope relatively short time low testing effort.