MATEC Web of Conferences (Jan 2019)

Determination of temperature dependences of Young's modulus and internal friction of fuel cladding by resonance method

  • Moshev A A,
  • Martynenko S P,
  • Martynenko S S,
  • Kudryavtsev E M,
  • Ableyev A N,
  • Tokarev A N,
  • Panasenko R A,
  • Rodko I I,
  • Maksimkin A I,
  • Zhukovskii Y O,
  • Belendryasova E G

DOI
https://doi.org/10.1051/matecconf/201927703011
Journal volume & issue
Vol. 277
p. 03011

Abstract

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We study elastic characteristics and internal friction of fuel claddings to improve computer codes for VVER-1000 fuel rods. We analytically described elastic characteristics of cladding material and obtained coefficient of the form of the first longitudinal frequency numerically. We described new measuring module for automatic acquisition data. We’ve established temperature dependences of Young’s modulus and internal friction via high-temperature facility and developed electronic module and noted maximum of these characteristics at the temperature 1160 K. It can be explained by the destruction of the texture in the material of claddings.