Open AccessInvestigation of loading speed influence on fatigue wear of - polymer materials
Author(s) -
D. Bataev,
R. U. Goytemirov,
M. A. Gaziyev,
M. A. Dzhamaldinova
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1064/1/012003
Subject(s) - materials science , composite material , cyclic stress , cementation (geology) , polymer , homogeneous , composite number , dynamic loading , cement , physics , thermodynamics
Antifriction and friction materials used in many construction structures, devices and road construction machines simultaneously undergo dynamic and impact loads. The article considers the influence of dynamic and impact loads on the friction and wear of polymer composite materials. The materials of the maslyanit group are established to have high resistance to frictional and bulk fatigue and are capable of long-term operation without failure under cyclic dynamic and impact nature of loading. Test results show that pure kapron, despite its homogeneous structure and greater elasticity than maslyanits, is more prone to bulk fatigue failure under the cyclic impact. This fact is fundamental for confirming the mechanism of fatigue crack blocking by solid particles of the filler. Researches confirm that introduction of the solid particles capable of additional relaxation of stresses in a crack tip zone reduces the speed of distribution of the fatigue crack defined by the speed of polymer loading. The conducted research also confirms high tribotechnical properties of the composite material Maslyanit KSC which has increased hardness of surface layers and high impact viscosity of deep layers as a result of surface “cementation”.