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Abstract
Hot dip galvanized steel bolted joints has been tested under fatigue loading to evaluate the effect of galvanizing coating on the fatigue strength of S355 structural steel. The experimental results showed that the decrease of the fatigue life of coated specimens in comparison with that of uncoated joints is very limited and the results are in good agreement with Eurocode detail category, without substantial reductions. The procedure for coating and preparation of the bolted joints is described in detail in this paper providing a useful tool for engineers involved in similar practical applications. The experimental results are compared with the previously published data on central hole notched galvanized and not treated specimens characterized by the same geometry.
Highlights
M ajority of mechanical structures are made of various components which are connected using various kinds of joining methods such as welding, bolting, riveting and bonding
According to specific geometry of these joints, they are mostly considered as the critical components in structures. [1,2,3,4,5,6]
Deterioration due to corrosion usually leads to the seizure of fasteners and premature failures, in the form of corrosion fatigue
Summary
M ajority of mechanical structures are made of various components which are connected using various kinds of joining methods such as welding, bolting, riveting and bonding. [1,2,3,4,5,6] Due to their versatility and reliability, bolted connections are one of the most widely used methods for joining structural steel members. By employing the Kitagawa–Takahashi diagram, Vogt et al [21] specified a threshold value of the coating thickness that could not affect the fatigue behaviour of unnotched components made of structural steels. The fatigue data are summarized and compared with those taken from the standard in force for the same detail category followed by a comparison between the present data and some recent data by the same authors Berto et al [23] from notched galvanized specimens weakened by a central hole
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