Analysis of singular stress fields in duplex fusion components
Thesis/Dissertation
·
OSTI ID:5239811
Elastic-stress singularities at the edge of the interface in duplex fusion components are studied using a series solution derived from the Airy stress function. These singularities are studied by considering the thermal fields imparted by fabrication, start-up, and full-power operation. The influence of void swelling and irradiation creep on the singularities in bonded fusion components is considered by modeling the void swelling as an isotropic volume change, and by modeling irradiation creep as a linear viscoelastic process with a unit stress exponent. Two material combinations are chosen for the study of the effects of a typical fusion environment: graphite on copper and tungsten on vanadium. Because the graphite and copper are assumed to be creep-free, the densification of both materials causes boundary-layer stress intensities of similar magnitude to those caused by the fabrication process. The second duplex, though, is analyzed using a relatively high irradiation creep rate and the effects of swelling are found to be quite small, leading to the conclusion that irradiation creep can be an advantage in the presence of significant void swelling.
- Research Organization:
- California Univ., Los Angeles, CA (USA)
- OSTI ID:
- 5239811
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360605 -- Materials-- Radiation Effects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209* -- Fusion Power Plant Technology-- Component Development & Materials Testing
AIRY FUNCTIONS
COMPOSITE MATERIALS
CREEP
FUNCTIONS
MATERIALS
MECHANICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
REACTOR COMPONENTS
SINGULARITY
STRESS ANALYSIS
THERMONUCLEAR REACTORS
360605 -- Materials-- Radiation Effects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209* -- Fusion Power Plant Technology-- Component Development & Materials Testing
AIRY FUNCTIONS
COMPOSITE MATERIALS
CREEP
FUNCTIONS
MATERIALS
MECHANICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
REACTOR COMPONENTS
SINGULARITY
STRESS ANALYSIS
THERMONUCLEAR REACTORS