In this paper the commonality of the destruction and materials cutting processes is substantiated. The use of preliminary mechanical and thermal effects on polymer composite materials is justified on the base on the provisions of the materials fracture kinetic concept. The ranges of the parameters values for thermal and mechanical effects on polymer composite materials are scientifically sound. Experimental studies of the polymeric materials deformation and fracture processes under uniaxial tension were carried out in order to select rational values of the preliminary mechanical stresses. It has been experimentally proved that the most weakened structure of the material is retained for 5-20 minutes for fluoroplastic and caprolon after preliminary loading. And the rest time between the deformation steps for thermosets such as getinaks and textolite does not affect the formation and change in the material strength.

在本文中，破坏和材料切割过程的共性得到了证实。基于材料断裂动力学概念的规定，对聚合物复合材料使用初步的机械和热效应是合理的。聚合物复合材料的热效应和机械效应的参数值范围是科学合理的。为了选择合理的初步机械应力值，对聚合物材料在单轴拉伸下的变形和断裂过程进行了实验研究。经实验证明，氟塑料和caprolon在初步加载后，材料最薄弱的结构保留5-20分钟。