Abstract
Honeycomb sandwich panels are used as lightweight panels when a high bending stiffness is required, such as aircraft, train and architectural materials. Aluminum honeycomb cores have been used as the core materials of sandwich panels, however, there is a problem that the manufacturig cost of sandwich panels using aluminum honeycomb cores is very high. By the way, we have developed the SMART SHEET^R which has a large second moment of area in arbitrary cross sectional dimensions in order to increase the bending stiffness in all directions. The SMART CORE^R panel, which uses the SMART SHEET as the core material instead of the honeycomb core, can be used as an alternative sandwich panel. In this study, the bending stiffness of the SMART SHEET, the SMART CORE and the honeycomb panel have been investigated using the three point bending test. The results showed that the bending stiffness of the SMART SHEET and the SMART CORE are higher than that of the honeycomb panel.
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