Relaxation of compressive stress in gamma-irradiated Viton™ fluoroelastomer
| Autor: | William H. Gourdin, Wayne Jensen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering Drop (liquid) Viton 01 natural sciences 010305 fluids & plasmas chemistry.chemical_compound Compressive strength Nuclear Energy and Engineering chemistry 0103 physical sciences Stress relaxation Fluoroelastomer Relaxation (physics) General Materials Science Irradiation Composite material 010306 general physics Fluoride Civil and Structural Engineering |
| Zdroj: | Fusion Engineering and Design. 172:112714 |
| ISSN: | 0920-3796 |
| Popis: | We report our study of stress relaxation of Viton™ A hexafluoropropylene-vinylidene fluoride co-polymer fluoroelastomer compressed 25% and irradiated at room temperature in air to nominal absorbed doses of 10 – 106 Gy with 1.17 and 1.33 MeV gammas from a cobalt-60 source. Our data show that the true stresses at room temperature in ring samples of Viton™ A fluoroelastomer compressed 25% decline slightly from 1014±93 kPa at zero dose to 996±115 kPa at a dose of 103 Gy, decrease to 967±98 kPa at 104 Gy and then drop sharply to 640±116 kPa at 105 Gy and 157±32 kPa at 106 Gy. We briefly discuss the implications of this data for the integrity of seals in high-radiation environments. |
| Databáze: | OpenAIRE |
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