期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2019
卷号：13
期号：3
页码：90-97
DOI：10.12913/22998624/110373
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：The paper presents the results of experimental investigations, the aim of which was to determine the degree ofweakening of skin sheet of the thin-walled structure through a single-row welded joints made by Refll Friction StirSpot Welding (RFSSW) technology. At the beginning, a short metallographic analysis of the weld was carried out,defning the characteristic areas of the microstructure. Then, comparative tests were carried out on the thin-walledstructure sample in the form of a single-row skin-stringer joint. The structures made with the discussed technologyof welding were compared with the traditionally joined structure by riveting. It has been shown that in the caseof the welded structure, the skin sheet is weakened by more than 6% to a lesser extent than in the case of riveted.However, it was shown that the cracking path in the tensiled welded sheet runs along an unpredictable path, deviating from the line marked by the welds’ row. While in the case of riveted joint the cracking propagation along therow of rivets was revealed. The analyzes of fracture surfaces for both cases using scanning electron microscopywere also undertaken, thus undertaking preliminary considerations on the mechanism of fracture.
