TIME-TEMPERATURE DEPENDENT FLEXURAL FATIGUEBEHAVIOR OF HONEYCOMB SANDWICH COMPOSITES

摘要

The three-point bending tests on constant strain rate(CSR) and fatigue loading undervarious strain rates and temperatures were carried out for honeycomb cored sandwich(SW) panel withGFRP surface sheets and Nomex honeycomb core. The maximum bending moments by CSR andfatigue loadings strongly depend on time and temperature and the time-temperature superpositionprinciple for the storage modulus of matrix resin holds for the maximum bending moments by fatigueloading as well as CSR loading. Based on these results, the master curves of the bending moment byfatigue loading can be constructed and the long term fatigue life can be predicted using these mastercurves.