Current pulse in the tungsten wire

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Measurements of Tungsten properties - new
results - (and comparison with LS-DYNA
simulations)
Goran Skoro
09 September 2009
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Introduction Current pulse wire tests at RAL
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Lifetime/fatigue tests results
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Velocity Interferometry System for Any Reflector
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Results Part I
Longitudinal oscillations of the wire -Youngs
modulus of tungsten at room temperature-
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Results Part II
Radial oscillations of the wire - experiment vs.
simulation -
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Material model used in the analysis
Illustration only

• Temperature Dependent Bilinear Isotropic Model
• Uses 2 slopes (elastic, plastic) to describe the
  stress-strain curve
• Inputs density, Young's modulus, CTE, Poisson's
  ratio, yield stress, ...

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Particular thanks to Nick Reynolds for his help
during the tests.
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Results Part III
Radial oscillations of the wire -Youngs modulus
of tungsten at high temperatures-
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J.W. Davis, ITER Material Properties Handbook,
1997, Volume AM01-2111, Number 2, Page 1-7,
Figure 2
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