MATERIAL TESTS AND ANALYSIS OF AIRCRAFT MATERIALS

The payload is only 20% of a presently used cargo aircraft's take-off weight, the circa half of the rest 80% is the empty weight. So it is obvious that reducing the empty weight improves significantly the economy, hence there is a huge demand in the aircraft industry for light structural materi...

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Bibliographic Details
Published in:Annals of Faculty Engineering Hunedoara 2019-02, Vol.17 (1), p.95-100
Main Authors: Molnár, Tamás, Szuchy, Péter, Csikós, Sándor, Gogolák, László, Bíró, István, Sárosi, József
Format: Article
Language:English
Subjects:
Aerospace materials
Aircraft
Aircraft components
Aircraft construction materials
Aircraft industry
Airports
Aluminum
Cargo aircraft
Corrosion fatigue
Corrosion resistance
Crack propagation
Elongation
Fatigue failure
Fatigue limit
Machinability
Materials selection
Polymer matrix composites
Quasars
Tensile strength
Tensile tests
Testing
Weight
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Summary:The payload is only 20% of a presently used cargo aircraft's take-off weight, the circa half of the rest 80% is the empty weight. So it is obvious that reducing the empty weight improves significantly the economy, hence there is a huge demand in the aircraft industry for light structural materials with advanced parameters. Choosing a material is based on the following features: allowable stress, fatigue limit, crack-spread, corrosion, heat-resistance, accessibility and machinability, material cost and process resource demand. Our investigations focused on the tests of materials applied in aircraft's wing structure that can be made of wood, metal, plastic and composite materials. We made tensile tests by the QUASAR 100 tensile strength-testing machine of University of Szeged, Faculty of Engineering. The standard test specimens were manufactured from different wing samples (steel, aluminium, plastic, composite) received from the Airport of Szeged. During the tests we analysed the upper and lower yield points, tensile strength, and elongation at rupture which features are essential from the point of view of their application.
ISSN:1584-2665
2601-2332