A. V. Lavrov, O. V. Mitrakov, A. N. Davydenko, A. S. Yastrebov
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引用次数: 0
Abstract
The fractures of compact samples after static crack resistance testing, in which the crack on the addfracture site rotates at a right angle with respect to the plane of the initial (fatigue) crack. Possible reasons for the formation of this shape of fractures are analyzed. It is shown that one of the possible reasons for crack rotation consists in the presence of residual stresses in the sample body. To assess the magnitude of residual stresses, a template has been cut out from a part of a compact sample tested for static crack resistance subsequently examined by means of a double-sided layer removal technique. The presence of residual stresses in the direction parallel to the initial fatigue crack has been demonstrated, which confirms the conclusions made regarding a possible effect of residual stresses exerted on crack rotation in the course of addfracture.
期刊介绍：
Polymer Science, Series D publishes useful description of engineering developments that are related to the preparation and application of glues, compounds, sealing materials, and binding agents, articles on the adhesion theory, prediction of the strength of adhesive joints, methods for the control of their properties, synthesis, and methods of structural modeling of glued joints and constructions, original articles with new scientific results, analytical reviews of the modern state in the field.
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