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.
Petrović et al. (Wed,) studied this question.
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