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Fusion Engineering and Design 81 (2006) 607612 Experimental study of the interaction of ceramic breeder pebble
 

Summary: Fusion Engineering and Design 81 (2006) 607612
Experimental study of the interaction of ceramic breeder pebble
beds with structural materials under thermo-mechanical loads
P. Calderoni, A. Ying, T. Sketchley, M.A. Abdou
MAE Department, UCLA, 44-114 Engineering IV, Los Angeles, CA 90095, USA
Received 9 February 2005; received in revised form 21 July 2005; accepted 21 July 2005
Available online 20 December 2005
Abstract
This paper presents the first results obtained in a facility constructed at the University of California, Los Angeles to study
the interaction of ceramic breeder pebble beds with structural materials in conditions relevant to fusion energy power plant
blanket operations. The experiments study the thermo-mechanical performance of lithium meta-titanate oxide (Li2TiO3) pebbles
and silicon carbide clad constrained by a low thermal expansion alloy in vacuum and He atmosphere. The results show that
large deformations due to induced thermal stresses are present during the first heat cycle but afterward are accommodated by
a combination of pebble re-arrangement within the bed and thermally induced creep deformation. Initial results of a numerical
simulation of the experiments using a finite element code that includes creep deformation is also presented. Planned operation
of the UCLA thermo-mechanics test facility is summarized to conclude the paper.
2005 Elsevier B.V. All rights reserved.
Keywords: Fusion energy; Gas-cooled blanket; Lithium meta-titanate; Silicon carbide; Creep deformation; Finite elements
1. Introduction
The thermo-mechanical performance of lithium-

  

Source: Abdou, Mohamed - Fusion Science and Technology Center, University of California at Los Angeles

 

Collections: Plasma Physics and Fusion