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Tungsten Behavior at High Temperature and High Stress

Škoro, G.P., Back, J.J., Bennett, J.R.J., Edgecock, R., Booth, C.N., Gray, S.A. and McFarland, A.J. (2010) Tungsten Behavior at High Temperature and High Stress. In: Proceedings of the 1st International Particle Accelerator Conference. IPAC 2010 . JACoW, Kyoto, Japan, pp. 4269-4271. ISBN 978-92-9083-352-9

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Abstract

Re­cent­ly re­port­ed re­sults on the tung­sten life­time/fa­tigue tests under con­di­tions ex­pect­ed in the Neu­tri­no Fac­to­ry tar­get have strength­ened the case of solid tar­get op­tion for a Neu­tri­no Fac­to­ry. This paper gives de­scrip­tion of the de­tailed mea­sure­ments of the tung­sten prop­er­ties at high tem­per­a­ture and high stress. We have per­formed ex­ten­sive set of mea­sure­ments of the sur­face dis­place­ment and ve­loc­i­ty of the tung­sten wires that were stressed by pass­ing a fast, high cur­rent pulse through a thin sam­ple. Ra­di­al and lon­gi­tu­di­nal os­cil­la­tions of the wire were mea­sured by a Laser Doppler Vi­brom­e­ter. The wire was op­er­at­ed at tem­per­a­tures of 300-2500 K by ad­just­ing the pulse rep­e­ti­tion rate. In doing so we have tried to sim­u­late the con­di­tions (high stress and tem­per­a­ture) ex­pect­ed at the Neu­tri­no Fac­to­ry. Most im­por­tant re­sult of this study is an ex­per­i­men­tal con­fir­ma­tion that strength of tung­sten re­mains high at high tem­per­a­ture and high stress. The ex­per­i­men­tal re­sults have been found to agree very well with LS-DY­NA mod­elling re­sults.

Item Type: Book Chapter
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
Related URLs:
Depositing User: Thomas Edgecock
Date Deposited: 15 Jul 2014 14:50
Last Modified: 30 Nov 2016 17:34
URI: http://eprints.hud.ac.uk/id/eprint/21171

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