Author(s):
1. Miodrag Milčić, Faculty of Mechanical Engineering in Niš, Serbia
2. Dragan Milčić, Faculty of Mechanical Engineering in Niš, Serbia
3. Boban Andjelković, Faculty of Mechanical Engineering in Niš, Serbia
4. Nataša Jovanović, Faculty of Mechanical Engineering in Niš, Serbia

Abstract:
Light welded constructions from aluminum alloys are widely used in the automotive and aerospace industry. Particularly interesting are the lightweight construction made of aluminum alloys that are difficult to weld conventional welding procedures. Such structures are welded with Friction stir wlding (FSW), which is a relatively new way of welding. When dynamically loaded welded structures it is necessary to carry out testing of fatigue behavior of materials (the legality of fatigue crack growth and testing fatigue strength and determination of S-N curves). Faculty of Mechanical Engineering in Nis has developed a methodology based on the vibration tests based on the estimation that the fatigue behavior of welded joints achieved with FSW. In order to reduce the duration of the test, the test setup was developed for the simultaneous testing of a large number of specimens. For the generation of harmonic oscillations of console set tube, used high-frequency electrodynamic vibration test system (shaker) Sentek Dynamics. The connection between the armature and shaker test samples is accomplished using a specially designed fuser, which enables cantilevered clamping tube.

Key words:
Fixator for vibration testing, Welded joints specimens, Fatigue strength, Shaker

Thematic field:
Mechanics and Design

Date of abstract submission:
09.03.2017.

Conference:
13th International Conference on Accomplishments in Mechanical and Industrial Engineering