Standard delamination tests of monolithic composites prescribe configurations where the crack is a symmetry plane for both overall geometry and stacking sequence, ensuring a controlled mode ratio. These normalized configurations do not enable testing of curved specimens, like those manufactured by filament winding. Here, we propose a new concept for the delamination testing of cylindrical laminates, the Double Drum Peel, related to the peel tests used for adhesives or thin-films debonding. A global energy analysis, including all sources of energy release and dissipation, provides the expression of the critical strain energy release rate. As in the classical peel test, the energy dissipated by mechanisms other than delamination should be accounted for to determine intrinsic interface properties. The local mode mixity is evaluated based on analytical results on the classical peel test. Tests using carbon-peek rings manufactured by laser assisted tape placement are presented to illustrate the potential of the DDP.

整体复合材料的标准分层测试规定了以下配置：裂纹是整体几何形状和堆叠顺序的对称平面，确保了可控的模数比。这些归一化配置无法像弯曲灯丝缠绕那样测试弯曲样本。在这里，我们提出了一种圆柱形叠层剥离测试的新概念，即双鼓剥离法，它涉及用于粘合剂或薄膜剥离的剥离试验。包括所有能量释放和耗散的所有来源的全局能量分析提供了临界应变能量释放速率的表达。与经典剥离测试中一样，应考虑通过除分层以外的其他机制耗散的能量以确定固有的界面特性。基于经典剥离测试的分析结果评估局部模式混合。提出了使用通过激光辅助胶带放置制造的窥碳环的测试，以说明DDP的潜力。