Fretting behavior of self-piercing riveted joints in titanium sheet materials

Lun Zhao, Xiaocong He, Baoying Xing, Xianlian Zhang, Qiang Cheng, Fengshou Gu, Andrew Ball

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This paper reports on studies of the fretting behavior of self-piercing riveted (SPR) joints in titanium sheet materials. Experiments were performed on SPR titanium joints to help understand the influences of sheet thickness and fatigue load level on the fatigue strength and failure mode of the joints. Failed joints were examined using a Scanning Electron Microscope and an Energy Dispersive X-ray machine to study the fretting failure mechanisms of the joints. The results showed that increasing sheet thickness could improve the fatigue strength of the joints at high load levels but less so at low load level. Three failure modes were observed, the pierced sheet failure mode, the locked sheet failure mode and the rivet failure mode. The pierced sheet failure was mainly caused by the fretting wear at the interface between the rivet head and the pierced sheet. The locked sheet failure and rivet failure were generated by the fretting wear at the interface between the rivet shank and the locked sheet. Oxidized wear debris was observed on the surfaces of all the fracture regions of the joints. The main elements of the oxidized wear debris on rivet surfaces were Ti, Zn and O.

Original languageEnglish
Pages (from-to)246-254
Number of pages9
JournalJournal of Materials Processing Technology
Volume249
Early online date13 Jun 2017
DOIs
Publication statusPublished - Nov 2017

Fingerprint

Titanium sheet
Rivets
Piercing
Failure modes
Wear of materials
Debris
Titanium
Electron microscopes
Fatigue of materials
Scanning
X rays
Experiments

Cite this

Zhao, Lun ; He, Xiaocong ; Xing, Baoying ; Zhang, Xianlian ; Cheng, Qiang ; Gu, Fengshou ; Ball, Andrew. / Fretting behavior of self-piercing riveted joints in titanium sheet materials. In: Journal of Materials Processing Technology. 2017 ; Vol. 249. pp. 246-254.
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abstract = "This paper reports on studies of the fretting behavior of self-piercing riveted (SPR) joints in titanium sheet materials. Experiments were performed on SPR titanium joints to help understand the influences of sheet thickness and fatigue load level on the fatigue strength and failure mode of the joints. Failed joints were examined using a Scanning Electron Microscope and an Energy Dispersive X-ray machine to study the fretting failure mechanisms of the joints. The results showed that increasing sheet thickness could improve the fatigue strength of the joints at high load levels but less so at low load level. Three failure modes were observed, the pierced sheet failure mode, the locked sheet failure mode and the rivet failure mode. The pierced sheet failure was mainly caused by the fretting wear at the interface between the rivet head and the pierced sheet. The locked sheet failure and rivet failure were generated by the fretting wear at the interface between the rivet shank and the locked sheet. Oxidized wear debris was observed on the surfaces of all the fracture regions of the joints. The main elements of the oxidized wear debris on rivet surfaces were Ti, Zn and O.",
keywords = "Crack initiation and propagation, Fatigue fracture, Fretting wear, Self-piercing riveting, Titanium sheet material",
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Fretting behavior of self-piercing riveted joints in titanium sheet materials. / Zhao, Lun; He, Xiaocong; Xing, Baoying; Zhang, Xianlian; Cheng, Qiang; Gu, Fengshou; Ball, Andrew.

In: Journal of Materials Processing Technology, Vol. 249, 11.2017, p. 246-254.

Research output: Contribution to journalArticle

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AB - This paper reports on studies of the fretting behavior of self-piercing riveted (SPR) joints in titanium sheet materials. Experiments were performed on SPR titanium joints to help understand the influences of sheet thickness and fatigue load level on the fatigue strength and failure mode of the joints. Failed joints were examined using a Scanning Electron Microscope and an Energy Dispersive X-ray machine to study the fretting failure mechanisms of the joints. The results showed that increasing sheet thickness could improve the fatigue strength of the joints at high load levels but less so at low load level. Three failure modes were observed, the pierced sheet failure mode, the locked sheet failure mode and the rivet failure mode. The pierced sheet failure was mainly caused by the fretting wear at the interface between the rivet head and the pierced sheet. The locked sheet failure and rivet failure were generated by the fretting wear at the interface between the rivet shank and the locked sheet. Oxidized wear debris was observed on the surfaces of all the fracture regions of the joints. The main elements of the oxidized wear debris on rivet surfaces were Ti, Zn and O.

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