Abstract:
The out-of-plane/in-plane impact compression response characteristics of 3-D braided basalt filament fiber reinforced epoxy composites under the temperature field of 23, 60, 90, 120, 150, 210 ℃ and different strain-rates (1 300-1 600, 1 600-2 000, 2 000-2 300 s
-1) were investigated. The results indicate that the stress-strain curve movement characteristics of out-of-plane/in-plane impact compression depend on whether the test temperatures are above or below the
Tg of epoxy. Even though under the same test condition (temperature and gas pressure), there is still great difference between stress-strain curves of out-plane impact compression and in-plane impact compression. Temperature and strain rate have influence on compression modulus, peak stress, failure strain and specific energy absorption at different levels. The failure modes, affected by temperature and strain rate, differ in out-plane compression and in-plane compression.