In this paper, a direct procedure to identify interaction forces between self-adhesive flexible polymeric films is developed. High-resolution photographs of the deformed shape within and outside the zone of adhesive interaction are taken at different instances of the T-peel test. To describe the deformed centerline, an approximate analytical solution to the equations of the nonlinear beam theory is derived. The obtained function is the exponential sum satisfying both kinematic and static boundary conditions for the T-peel configuration. The interaction forces computed with the developed function satisfy equilibrium conditions. The procedure provides characteristics of the adhesive interaction such as the energy of adhesion, maximum force and critical opening displacement. Furthermore, the developed direct approach is applicable to generate the whole traction–separation curve.

在本文中，开发了一种直接程序来确定自粘柔性聚合物薄膜之间的相互作用力。在T剥离试验的不同情况下，对胶粘剂相互作用区域内外的变形形状的高分辨率照片进行了拍摄。为了描述变形的中心线，导出了非线性梁理论方程的近似解析解。获得的函数是满足T型剥离构型的运动学和静态边界条件的指数和。用已开发的函数计算的相互作用力满足平衡条件。该程序提供了粘合剂相互作用的特性，例如粘合能量，最大作用力和临界开口位移。此外，