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ISSN: 1820-0206 First published in 1950
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doi:10.5937/str2500004P Vol. 75, No.1(2025), Pages: 27-33 Impressum Contents
Analysis of Modification of Nose Gear Support with Aspect of Post Weld Heat Treatment of Aerospace Steel 15CrMoV6
Nikola Bogavac
Suzana Trifunović
This paper examines the stress calculation of the nose gear support on the airplane “SOVA” both before and after modification, as well as the definition of welding specifications. During the design and development of a new aircraft “SOVA”, the need to modify the nose gear support of ”Utva-75”, emerged, aiming to eliminate areas of high stress where cracks had previously been detected. Modification will impose welding of 15CrMoV6 steel and our specially developed specific welding procedure specification and to check the benefits experimentally. Stress occurrence calculation is realized with a FEM analysis. The given results are used for creating proper welding procedure specification and to prove that, after welding, material does not loose characteristics in heat affected zone. The process of welding analysis is done experimentally. The experiment was conducted on standard specimens. The specimens are composed from aerospace steel 15CrMoV6 (1.7734). The results are compared and presented in the paper.
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