Open AccessHigh-strength mechanical joints under combined mechanical and medial loads
Author(s) -
D. Wett,
M Radanke,
Peter Lebelt,
H Brauns
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1147/1/012013
Subject(s) - galvanization , electrolyte , corrosion , materials science , crevice corrosion , metallurgy , bimetal , coating , condensation , composite material , electrode , chemistry , layer (electronics) , physics , thermodynamics
This paper introduces a test method for joined hot-dip galvanized steelwork test specimens. The specimens joined by means of a lock bolt system were subjected to a simultaneously combined mechanical and medial loading. This was achieved by combining a vibration testing machine and a condensation chamber that was expanded by an electrolyte dosing unit. The electrolyte was dosed on one side of the specimen in the area around the lock bolt head. The zinc dissolution is locally accelerated in the area around the joining element possibly due to superimposed bimetal and crevice corrosion. In addition, the electrolyte enters the space between the joined steel sheets and initiates corrosion processes there, too. Besides the expected zinc ions, potassium ions were also detected in the collected electrolyte by means of elemental analysis. These are originally part of the friction-increasing coating.