In this module you select core materials from a library or input your own. The length, width and core thickness for the sandwich are first defined. You may now choose from two options. Sandwich buckling lets you select from five different boundary conditions for calculating the minimum uniaxial compression stress for buckling. The bending option determines the maximum deflection due to a uniform distributed load on a simply supported sandwich. Both options calculate face wrinkling and dimpling stresses. MIL-HDBK 23 theory & methods are employed.