The Effect of Water Immersion Ageing on Low and High-Velocity Impact Behavior of Marine Sandwich Panels with Different Skins

The susceptibility of sandwich structures to accidental impacts is one of the main concerns in design of marinecrafts as it severely affects the structural integrity and safety of the structure. Thus, in this paper the effect of skin typeon impact behavior of marine sandwich panels was experimentally evaluated. For this purpose, two different balsa coresandwich panels with glass fiber/epoxy (GE) and fiber metal laminate (FML) skins were subjected to water immersionageing followed by instrumented low and high-velocity impact testing. The results showed that the skin properties havean important effect on the impact response of both the studied sandwich systems. Accordingly, the reduction of Charpyimpact strength due to moisture aging in GE and FML sandwich specimens with open edges were ۲۹.۲۷% and ۲۲.۶۰%,respectively, and the reduction of high-velocity impact energy absorption were found to be ۱۳.۱۵% and ۲.۱۳% for GEand FML specimens, respectively.

کلیدواژه ها:

Sandwich Panel ، Balsa ، Fiber Metal Laminate (FML) ، Water Immersion Ageing ، Impact Behavior