NDLI: Study of the Crack Propagation Behaviour of 304L Austenitic Stainless Steel Under Thermal Fatigue

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Bouin, Pauline Fissolo, Antoine Gourdin, Ce´dric
Copyright Year	2011
Abstract	Thermal fatigue phenomena are long term deterioration mechanisms which become more and more important as the life-time of nuclear power plant increases. Some incidents as the incident of Civaux I and some works in thermal fatigue have disproved current methodologies and usual criteria to predict propagation of thermal fatigue cracks in nuclear power plants. This paper presents the results of the thermal fatigue tests, Fat3D, which are conducted on 304L austenitic stainless steel pipes. This experiment has been designed to study the problem of closure effect and fatigue crack growth under thermal fatigue conditions on quasi-structure specimens. The importance of the initiation and the propagation phases on a notched specimen and the evolution of the stress intensity factor according to the propagation are investigated as well. The use of different non destructive techniques to detect and follow crack propagation is also assessed. In parallel, a numerical interpretation is developed based on a material characterisation and using finite element analyses with the French Cast3M code. This combined experimental and numerical study enables to assess improvements of classical methods to accurately predict the crack growth propagation under thermal loads and to understand the influence of the main parameters concerning crack propagation in such components.
Sponsorship	Pressure Vessels and Piping Division
Starting Page	495
Ending Page	503
Page Count	9
File Format	PDF
ISBN	9780791844533
DOI	10.1115/PVP2011-57234
Volume Number	Volume 3: Design and Analysis
Conference Proceedings	ASME 2011 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2011-07-17
Publisher Place	Baltimore, Maryland, USA
Access Restriction	Subscribed
Subject Keyword	Fatigue testing Stainless steel Fatigue Finite element analysis Fracture (materials) Nuclear power stations Pipes Fatigue cracks Stress Crack propagation
Content Type	Text
Resource Type	Article

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