ABSTRACT
The advantages of sandwich panels in structural engineering are obvious. They are light in weight and combine a core which is structural member and thermal insulation. And most important, they are cost effective in production and easy to mount. For two different types of core material the high-cycle fatigue behaviour is examined in this paper: Mineral wool (MW) and polyurethane foam (PU). On structural point of view sandwich panels can be assessed according to the sandwich theory formulated in Stamm & Witte (1974). Normally, static or quasi-static loads dominate in structural engineering. But there is a number of applications where loading occurs cyclic and the fatigue strength becomes important.
