Sas N. Period estimation of sub critical growth of high temperature creep crack in materials and construction elements

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0408U005427

Thesis Registration Form

0408U005427.pdf

Applicant for

Sas Nataliya Bogdanivna

Specialization

01.02.04 - Механіка деформівного твердого тіла

Date of defense

21-11-2008

Specialized Academic Board

Д35.195.01

Essay

In the framework of fracture mechanics of elastic-plastic solids mathematical model for investigating a high temperature creep crack growth in construction materials and on this base estimation of residual lifetime of construction elements and their high temperature strength has been formulated. Method of equivalent squares for effective realization of proposed model and approximate estimation of sub critical creep crack growth in solids at high temperature has been developed. The criterion of high temperature strength of thin-walled construction elements with cracks has been formulated. Formulation of the problem about sub critical creep crack growth has been made. Approximate solutions of the problem with creep crack in the wall of the steam pipeline and in the disk of steam turbine are obtained.

Thesis supervisor

Andreykiv Olexandr Yevgenovych

Official opponents

Камінський Анатолій Олексійович
Осадчук Василь Антонович

Files

Dys.doc

aref.doc

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