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Author:

Zhang, Tianxiong (Zhang, Tianxiong.) | Bu, Yidu (Bu, Yidu.) | Wang, Yuanqing (Wang, Yuanqing.) | Chen, Zhihua (Chen, Zhihua.) | He, Wei (He, Wei.)

Indexed by:

EI Scopus SCIE

Abstract:

The conventional surface treatments on stainless steel plates yield slip factors less than the required value for a friction grip, which hinders the application of stainless steel high-strength bolts. The slip factor and the treatment process of stainless steel surfaces are not clearly specified in most of the existing design codes. Existing studies also show different slip factors from similarly treated surfaces. In this paper, a new surface treatment is proposed: the two touching surfaces of the bolted connection are grit-blasted on one side and coated with high-velocity oxygen fuel (HVOF) on the other side. The slip behaviour of the new method was compared with four conventional methods. The roughness and hardness of different surfaces were measured prior to a total of 30 slip tests where the slip factors of multiple stainless steel surfaces were tested. It was shown that the new proposed surface treatment method can yield a slip factor of 0.61, much higher than the conventional surface treatments, meeting the requirements as a slip-resistant connection. The preload relaxation of stainless steel high-strength bolts was also monitored and compared to standard grade 10.9 high-strength bolts. We found that the preload relaxation in stainless steel high-strength bolts is negligible.

Keyword:

test slip factor stainless steel high-strength bolted connection preload faying surface treatment method

Author Community:

  • [ 1 ] [Zhang, Tianxiong]Tianjin Univ, Sch Civil Engn, Tianjin 300072, Peoples R China
  • [ 2 ] [Chen, Zhihua]Tianjin Univ, Sch Civil Engn, Tianjin 300072, Peoples R China
  • [ 3 ] [Bu, Yidu]Beijing Univ Technol, Dept Civil Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Bu, Yidu]Tsinghua Univ, Sch Civil Engn, Beijing 100084, Peoples R China
  • [ 5 ] [Wang, Yuanqing]Tsinghua Univ, Sch Civil Engn, Beijing 100084, Peoples R China
  • [ 6 ] [He, Wei]Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

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Source :

MATERIALS

Year: 2022

Issue: 16

Volume: 15

3 . 4

JCR@2022

3 . 4 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:66

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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