# Knowledge base: Warsaw University of Technology

Back

## The strenght properties of aviation composite structures

### Łukasz Piątkowski

#### Abstract

Questions described in the following paper focus on the usage of the carbon fibre composite and its widely comprehended results. The thesis consists of two independent parts. The first part, based on the cooperation with Air Force Institute of Technology, describes the techniques of discovering of damages on MiG-29’s vertical fin shells made of the carbon fibre composite. Here, the concept of the recording a stand damage is made. It records a geometric largeness of damage, presented in the form of numerical value, in the definite cell of Excel program. In addition, “Analiza” and “Konwerter” files were programed in the Visual Basic Aplication language. They were to create and use of emerged databases. System allows stockpiling of the results of measurement and their connections to optional combinations for further analysis. In this application it is also possible to make a visualisation on the behalf of the colour map, which can present any data given in the numerical form. Program also allows to modify introduced Excel data and received results. However, programing in the Visual Basic Aplication language makes the system flexible when the changes occure. The second part examines the question of the protection of glider’s front structures made of the carbon fibre composite. It is a continuation of a similar question stated in a diploma paper – “The experimentation of the energy-consuming of the glass fibre composite structure in relation to protection of glider’s nose part colliding with the ground.” Therefore, one of the purposes of this part is to test a suggested solution, using the carbon multi-layer composite. To achieve the purpose 7 spherical schells simulating glider’s nose were made. Then, they were tested in Charpy tests to examine their additional reinforcement or energy-consuming sleeves. Results, received in the form of maximum G-force and sample structure deformation, were at the same level as those quoted in the graduate work. They were achieved at over 50% reduction of the employed design element mass. Carried experiments confirmed the legitimacy of the next researches over the energy absorption of impact employment sleeves. What is more, it was shown that reinforcement of the structure reduces the deformation by the significant manner while the composites' impact, which is crucial in the context of the pilot’s protection.
Diploma type
Engineer's / Bachelor of Science
Diploma type
Engineer's thesis
Author
Łukasz Piątkowski (FPAE) Łukasz Piątkowski,, Faculty of Power and Aeronautical Engineering (FPAE)
Title in Polish
Właściwości wytrzymałościowe kompozytowych struktur lotniczych
Supervisor
Mirosław Rodzewicz (FPAE/IAAM) Mirosław Rodzewicz,, The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)Faculty of Power and Aeronautical Engineering (FPAE)
Certifying unit
Faculty of Power and Aeronautical Engineering (FPAE)
Affiliation unit
The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)
Study subject / specialization
, Lotnictwo i Kosmonautyka
Language
(pl) Polish
Status
Finished
Defense Date
29-09-2009
Issue date (year)
2009
Pages
102
Internal identifier
MEL; PD-895
Reviewers
Mirosław Rodzewicz (FPAE/IAAM) Mirosław Rodzewicz,, The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)Faculty of Power and Aeronautical Engineering (FPAE) Krzysztof Kędzior (FPAE/IAAM) Krzysztof Kędzior,, The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)Faculty of Power and Aeronautical Engineering (FPAE)
Keywords in Polish
kompozyt węglowy, absorpcja energii, uszkodzenia kompozytów, eksploatacja według stanu technicznego, bezpieczeństwo
Keywords in English
xxx
Abstract in Polish
File
• File: 1
Dyplom.pdf
• File: 2
Instrukcja.pdf
Request a WCAG compliant version

Uniform Resource Identifier
https://repo.pw.edu.pl/info/bachelor/WUT66cb484670d84c5181ffb94b617c7727/
URN
urn:pw-repo:WUT66cb484670d84c5181ffb94b617c7727

Confirmation
Are you sure?