A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fretting Fatigue Characterization of Bolted Steel Connections with Different Surface Treatments
Slip-critical connections are joints that have a low probability of slipping during their design life and generally demonstrate improved fatigue performance. For this reason they are commonly used in repetitive loading applications. However, slip-critical connections are prone to developing fretting damage caused by the inevitable micro slip between the contacting surfaces under repetitive loading conditions, which can lead to fretting fatigue failure. Surface finish is one of the factors that may affect the fretting fatigue behaviour of slip-critical connections. Various research studies have addressed the effect of different surface treatments, but relatively little attention has been given to the fretting fatigue behaviour of blast-cleaned surfaces and contradictory results have been reported in the literature. This paper presents the results of an experimental study investigating the impact of two different surface types, categorized in CAN/CSA-S16-14 as Class A (clean mill scale) and Class B (sandblasted), on the fretting fatigue life of bolted steel joints. Results showed that sandblasting the surface to create a Class B finish significantly reduced the fatigue life at lower levels of cyclic loading because the increased friction coefficient resulted in a smaller sticking area around the bolt hole, thereby increasing the contact pressure and shear stress concentration and reducing the magnitude of slip compared to the Class A surfaces.
Fretting Fatigue Characterization of Bolted Steel Connections with Different Surface Treatments
Slip-critical connections are joints that have a low probability of slipping during their design life and generally demonstrate improved fatigue performance. For this reason they are commonly used in repetitive loading applications. However, slip-critical connections are prone to developing fretting damage caused by the inevitable micro slip between the contacting surfaces under repetitive loading conditions, which can lead to fretting fatigue failure. Surface finish is one of the factors that may affect the fretting fatigue behaviour of slip-critical connections. Various research studies have addressed the effect of different surface treatments, but relatively little attention has been given to the fretting fatigue behaviour of blast-cleaned surfaces and contradictory results have been reported in the literature. This paper presents the results of an experimental study investigating the impact of two different surface types, categorized in CAN/CSA-S16-14 as Class A (clean mill scale) and Class B (sandblasted), on the fretting fatigue life of bolted steel joints. Results showed that sandblasting the surface to create a Class B finish significantly reduced the fatigue life at lower levels of cyclic loading because the increased friction coefficient resulted in a smaller sticking area around the bolt hole, thereby increasing the contact pressure and shear stress concentration and reducing the magnitude of slip compared to the Class A surfaces.
Fretting Fatigue Characterization of Bolted Steel Connections with Different Surface Treatments
Lecture Notes in Civil Engineering
Walbridge, Scott (editor) / Nik-Bakht, Mazdak (editor) / Ng, Kelvin Tsun Wai (editor) / Shome, Manas (editor) / Alam, M. Shahria (editor) / el Damatty, Ashraf (editor) / Lovegrove, Gordon (editor) / Zangouie, Alireza (author) / Wegner, Leon D. (author) / Muthu, Jacob (author)
Canadian Society of Civil Engineering Annual Conference ; 2021
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 ; Chapter: 15 ; 173-184
2022-04-14
12 pages
Article/Chapter (Book)
Electronic Resource
English
Fretting fatigue behavior and life prediction of automotive steel bolted joint
| British Library Online Contents | 2011
Riveted and bolted jonts -- Fatigue of bolted structural connections
| Engineering Index Backfile | 1963
Fatigue Cracking in Bolted Diaphragm Connections
| British Library Conference Proceedings | 1997