Fatigue strength of corroded bolted connection

被引：16

作者：

Zampieri, Paolo ^{[1
]}

Curtarello, Andrea ^{[1
]}

Pellegrino, Carlo ^{[1
]}

Maiorana, Emanuele ^{[2
]}

机构：

[1] Univ Padua, Dept Civil Environm & Architectural Engn, Via Marzolo 9, I-35131 Padua, Italy

[2] OMBA Impianti & Engn SpA, Via Croce 10, I-36040 Torri Di Quartesolo, VI, Italy

来源：

FRATTURA ED INTEGRITA STRUTTURALE | 2018年 / 12卷 / 43期

关键词：

Fatigue strength; Corrosion; Bolted connections; Steel bridge;

D O I：

10.3221/IGF-ESIS.43.06

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This note summarizes some recent investigation results on the behavior of corroded steel bolted joints under uniaxial fatigue loading. Fatigue test specimens, were made up using S355 structural steel plates joined together with preloaded M12 bolts of class 10.9 with a geometry that corresponds to the Delta sigma = 112 MPa EC3 detail category. The accelerated corrosion process was accomplished using an electrolyte consisting of an aqueous 5% NaCl solution whereby the specimens were treated. In particular, during the corrosion process specimens were repeatedly immersed for 2 minutes in the electrolyte and then removed keeping them 60 minutes long in free air at 35 degrees C. An atmospheric corrosion in marine-industrial environment is well-represented through corrosion test. Fatigue loading tests and surface morphology measurement of uncorroded and corroded specimens were performed and the results were compared.

引用

页码：90 / 96

页数：7

共 15 条

[1] Analysis of the stress intensity factor around corrosion pits developed on structures subjected to mixed loading [J].