An attempt was made to establish the correlation between surface waviness of honeycomb core panels and the face wrinkling attendant upon the panels when subjected to compressive forces. Tests were conducted with honeycomb sandwich edgewise compression specimens with controlled initial surface waviness. A survey of the literature disclosed that previous investigations furnished an excellent base for advancing the state of the art of this widely used form of construction. Although previous researchers had suggested methods of predicting the effects of surface waviness on skin wrinkling when considering only a small degree of waviness, the current testing indicated that by extrapolation these predictions could be applied to panels having a large degree of waviness. Further investigation must be conducted to obtain an empirical constant that will eliminate the problem of estimating or measuring the initial surface waviness.
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