ELECTRONIC SPECKLE INTERFEROMETRY METHOD FOR STRESS-STRAIN STATE (SSS) ANALYSIS OF AIRCRAFT STRUCTURES

Task. This article proposes the development of a new version of the method of electronic speckle interferometry and calculationand experimental analysis of the VAT perspective full-scale aircraft with complex VAT and new materials.Summary. An important feature of speckle interferometry is the use of electronic photography of a particularly thin, “granular” structure of light reflected by a diffuse object in laser light. With the use of electronic speckle interferometry, a new generation system for measuring stresses in elastic bodies and structures was created, which combines the ideas and methods of holographic interferometry. In addition to the study of stresses, this system allows to solve other problems: the places of application and the magnitude of the loads acting on the elastic body, the stresses in thin films and the connections of their mechanical characteristics with stresses, the distributed and local inhomogeneities of the body structure, the microcracks and internal bundles, the delamination of coatings and deformation prerequisites for their occurrence, etc. Practical significance. The use of electronic speckle interferometry is an important and promising method for the study of aircraft structures with the identification of stress concentration zones and the determination of physical and mechanical characteristics of various materials, this problem is considered in this article.

электронная спекл-интерферометрия, расчетно-экспериментальный анализ, спекл-голографическая интерферометрия, концентрация напряжений, неразрушающий контроль авиаконструкций