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Materials 2017, 10(9), 996; doi:10.3390/ma10090996

Experimental Study on Fatigue Behaviour of Shot-Peened Open-Hole Steel Plates

1
Department of Civil Engineering, Sichuan University, Chengdu 610065, China
2
Sichuan Provincial Key Laboratory of Failure Mechanics and Engineering Disaster Prevention & Mitigation, Sichuan University, Chengdu 610065, China
3
School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
*
Author to whom correspondence should be addressed.
Received: 13 July 2017 / Revised: 15 August 2017 / Accepted: 15 August 2017 / Published: 25 August 2017
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Abstract

This paper presents an experimental study on the fatigue behaviour of shot-peened open-hole plates with Q345 steel. The beneficial effects induced by shot peening on the fatigue life improvement are highlighted. The characteristic fatigue crack initiation and propagation modes of open-hole details under fatigue loading are revealed. The surface hardening effect brought by the shot peening is analyzed from the aspects of in-depth micro-hardness and compressive residual stress. The fatigue life results are evaluated and related design suggestions are made as a comparison with codified detail categories. In particular, a fracture mechanics theory-based method is proposed and demonstrated its validity in predicting the fatigue life of studied shot-peened open-hole details. View Full-Text
Keywords: open-hole; shot peening; fatigue behaviour; fracture mechanics open-hole; shot peening; fatigue behaviour; fracture mechanics
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Wang, Z.-Y.; Wang, Q.-Y.; Cao, M. Experimental Study on Fatigue Behaviour of Shot-Peened Open-Hole Steel Plates. Materials 2017, 10, 996.

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