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Master's Thesis
Author of thesis: Ing. Jan Hubáček
Acad. year: 2020/2021
Supervisor: Ing. Ladislav Chybík
Reviewer: doc. Ing. Jaroslav Juračka, Ph.D.
The Diploma Thesis deals with fatigue safe-life estimation of critical wing cross-section of an aircraft. The aircraft type is specified as all-metal high-wing strut monoplane. Aircraft is certified under FAR 23 Amendment 23-46 regulations. Wing safe-life estimation is evaluated in respect to methods listed in FAR 23 and its advisory circulars. \\ The theoretical part of diploma thesis reviews the project bases and literature. It briefly introduces project background, reasons for fatigue life calculation and aircraft subjected to fatigue analysis. Subsequently literature review was focused on requirements of standards, advisory circular documents and and research in field of fatigue life. \\ Second part of the thesis is focused on a computational analysis and a software development. First sub-part of computational analysis includes preparation of input data, including V-n diagram calculation, mission profile estimation, wing load distribution, critical cross-section stress analysis. Then detail analysis of fatigue was evaluated in respect to fatigue characteristics estimation, cumulative damage and fatigue life calculation with defined mission profile, wing safe life estimation.
fatigue, safe-life, wing, strut, turboprop, FAR 23, AC23-13A, ACE100, AFS-120-73-2, damage calculation, spectra, SMG-92, Finist
Date of defence
16.06.2021
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Student prezentoval svou diplomovou práci. Tu doplnil porovnáním dvou typových letů a jejich vlivem na analýzu životnosti. Následně se rozvinula diskuse na téma únavy a únavových zkoušek leteckých konstrukcí.
Language of thesis
English
Faculty
Fakulta strojního inženýrství
Department
Institute of Aerospace Engineering
Study programme
Mechanical Engineering (M2I-P)
Field of study
Aircraft Design (M-STL)
Composition of Committee
prof. Ing. Antonín Píštěk, CSc. (předseda) doc. Ing. Ivo Jebáček, Ph.D. (místopředseda) Ing. Robert Popela, Ph.D. (člen) doc. Ing. Miloslav Petrásek, CSc. (člen) Ing. Miroslav Šplíchal, Ph.D. (člen) Ing. Pavel Štrůbl (člen)
Supervisor’s reportIng. Ladislav Chybík
Grade proposed by supervisor: A
Reviewer’s reportdoc. Ing. Jaroslav Juračka, Ph.D.
Grade proposed by reviewer: A
Responsibility: Mgr. et Mgr. Hana Odstrčilová