NDLI: Experimental Study on Biaxial Ratcheting of SS316LN Steel Pipes Used in Fast Breeder Reactor Structures

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Athmanathan, S. Dandu, Bharath Kumar Rao, C. Lakshmana Krishnan, Santhana Kumar, R. Suresh Pandi, Chella
Copyright Year	2011
Abstract	SS316LN is the primary material used for critical components in fast breeder reactors. Piping systems play a vital role in the operation of any reactor. Fast breeder reactor piping system carries sodium at high temperatures. These systems are operated for long durations. Under normal operating conditions, these piping systems are under tensile stress due to internal pressure and self weight. In case of any seismic excitations, these piping systems are subjected to cyclic torsion along with the constant tensile stress. The combination of static axial tension and large magnitude of cyclic torsion leads to accumulation of plastic strains in axial direction. This accumulation of plastic strain in the axial direction due to cyclic torsion is called ratcheting. This paper discusses about the experimental investigations carried to simulate ratcheting behavior of the SS316L (N) pipe specimen. Many specimens tested under various loading combinations of constant axial tension and cyclic shear strain. The ratcheting for the material SS316LN has been observed experimentally. Axial strain variation with number of cycles is obtained for various loading cases. All these experiments have been conducted in room temperature.
Starting Page	715
Ending Page	718
Page Count	4
File Format	PDF
ISBN	9780791854891
DOI	10.1115/IMECE2011-63323
Volume Number	Volume 3: Design and Manufacturing
Conference Proceedings	ASME 2011 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2011-11-11
Publisher Place	Denver, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Tension torsion tests Bree diagram Biaxial ratcheting Rcc-mr Axial strain Cycles Temperature High temperature Steel Pressure Piping systems Sodium Weight (mass) Tension Excitation Shear (mechanics) Pipes Torsion Breeder reactors
Content Type	Text
Resource Type	Article

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