Abstract
The fracture toughness in the upper shelf area is determined with J-R curves. Presently, there is no data, nor predictions, regarding the J-R curve development during a decreasing thermal transient. In this study, the effect of rapid cooling on J-R curves is investigated. Fracture toughness specimens of a rolled steel plate S460 were cooled from 300 °C to the room temperature at a cooling rate of 2 °C/s determined at the center location of the specimen. The cooling rate was selected to be in the same range as during a loss of coolant accident in a nuclear power plant. The following was concluded: 1.) No unstable brittle fracture in the upper shelf region is observed for the investigated material during the cooling transient. 2.) Based on the results, when doing structural integrity analyzes of thermal transients in the upper shelf region, it is recommendable to use the lowest fracture toughness properties in the investigated temperature range, if no other information is available.
| Original language | English |
|---|---|
| Pages (from-to) | 42-49 |
| Number of pages | 8 |
| Journal | Procedia Structural Integrity |
| Volume | 42 |
| DOIs | |
| Publication status | Published - 2022 |
| MoE publication type | A4 Article in a conference publication |
| Event | 23rd European Conference on Fracture, ECF 2022 - Funchal, Portugal Duration: 27 Jun 2022 → 1 Jul 2022 |
Funding
The writing of this paper was funded by project AMOS (Advanced materials characterisation for structural integrity assessment) part of SAFIR2022 (The Finnish Research Programme on Nuclear Power Plant Safety 2019 - 2022).
Keywords
- ASTM E1820
- cooling transients
- Fracture toughness
- J-R
Fingerprint
Dive into the research topics of 'The effect of cooling transients on tearing resistance of a rolled steel'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver