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Registration Number

0224U003095, 0122U001859 , R & D reports

Title

New methods of technical diagnostics of structural and mechanical damage of high-strength polycrystalline materials after pulse plastic deformation

Head

Marushchak Pavlo O., Доктор технічних наук

Registration Date

08-04-2024

Organization

Ternopil National Technical University named after Ivan Puluj

Description

 This project is devoted to the creation of a new method of fractodiagnosis of surface and internal layers of polycrystalline materials, experimental research and analytical description of the patterns of localization of plastic deformation and assessment of the degradation of fracture mechanisms at different scale levels. Research has been conducted for high-strength titanium alloys used in aviation, military protective equipment, medicine, etc. It was found that for polycrystalline bodies, there is a gradient of mechanical properties at the grain boundaries of the surface and inner layers, which is caused by differences in the stress-strain state during loading. This structural and mechanical feature significantly affects the patterns of deformation of polycrystalline systems. That is, the surfaces and fractures of materials are actually a kind of "sensors" of the state of the material during deformation and destruction, which makes it informative when assessing the degradation of their operational properties. The project solves an actual scientific and technical problem, which consists in the development of a diagnostic complex for investigating the state of metal structures using the analysis of images of their surfaces.

Product Description

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Lutsyk Nadiia S.
Paliukh Andrii Ya.
Pulka Cheslav V.
Syniuk Halyna I.
Sorochak Andrii P.
Tsitsyura Olena I.