Limanskii I. The method of determining the characteristics of the static fracture toughness of the material transport aircraft fuselage

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0415U003526

Applicant for

Specialization

  • 05.02.09 - Динаміка та міцність машин

21-05-2015

Specialized Academic Board

Д26.241.01

Essay

The thesis is devoted to substantiation of key principles of new approach to determination of the characteristics of static fracture strength of sheet metals, which undergo fracture under general yield conditions. The procedure for conducting fracture strength tests for sheet metals has been developed. The influence of the test procedure, specimen geometry and initial stress concentrator on the characteristics of static fracture strength of D16AT aluminum alloy rolled sheet has been investigated. The experimentally determined mechanisms of initiation and jump-like growth of the crack in specimens MR(T) have been considered. A new form of presentation of the results of fracture strength tests, which makes it possible determine the linear and angle displacements of the crack faces from its initiation to the moment of loss of the specimen load-carrying ability, has been proposed.

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