Abstract
Recent studies have shown that plywood, laminated veneer lumber are very efficient crashworthiness materials. Therefore, there is a need to determine the fracture toughness of these wood composite materials to be able to model their static, dynamic damage behavior. This study reports the results of the delamination propagation of plywood under mode I loading. Two different double cantilever beam specimens made of poplar were compared: one with an interfacial fiber orientation of 0°/0°, the second with 0°/90°. Failure scenarios, patterns are analyzed to establish a comparison between the two configurations, compute consistent R-curves.
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