Fracture toughness calculation using dynamic testing
DOI:
https://doi.org/10.3989/revmetalm.1998.v34.i5.807Keywords:
Neutron embrittlement, Fracture toughness, Instrumented impact testing, Reactor pressure vessel, LWR reactorsAbstract
The most critical component of a Nuclear Power Station is the Reactor Pressure Vessel (RPV), due to safety and integrity requirements. The RPV is subjected to neutron radiation and this phenomenon lead to microstructural changes in the material and modifications in the mechanical properties. Due to this effects, it is necessary to assess the structural integrity of the RPV along the operational life through surveillance programs. The main objetive of this surveillance programs is to determine the fracture toughness of the material. At present this objective is reached combining direct measures and prediction techniques. In this work, direct measures of fracture toughness using instrumented Charpy V impact testing are present using a CIEMAT development on analysis of results.
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