Behaviors of Nuclear Fuel Cladding During RIA

Kim, Sun-Ki

doi:10.5772/34091

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Hoop Stress-strain Relation Derived From A-edc Tests1

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“…Meanwhile, some slight disparities can still be observed. 6,[22][23][24][25][26] Experimentally, the A-EDC test can achieve a stable uniaxial tension condition in the hoop direction throughout the test. For the other tests, some of them are unable to derive stress-strain relation by experiments.…”

Section: Hoop Stress-strain Relation Derived From A-edc Testsmentioning

confidence: 99%

Mechanical Properties of Zircaloy-4 Cladding Tube by Advanced Expansion due to Compression (A-EDC) Test

et al. 2017

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A new testing technique named advanced expansion due to compression (A-EDC) has been developed with an attempt to study the hoop mechanical behavior of Zircaloy-4 cladding under the pellet-cladding mechanical interaction (PCMI) and the presumed reactivity-initiated accident (RIA). The Zircaloy-4 used in this work showed elongated grains in the tube longitudinal direction, large amounts of residual strain, and crystallographic texture. The nite element method (FEM) analysis illustrates that the A-EDC test shows a uniaxial tension in the hoop direction, which has also been con rmed by experiments. In addition, the hoop stress-strain curve has been derived at room temperature by the A-EDC tests. Moreover, the fractured surface has been observed in this research.

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