... mechanics for RPVs. irradiation embrittlement embrittlement trend curves master curve fracture toughness RADIATION EMBRITTLEMENT TREND CURVES AND EQUATIONS AND THEIR USE FOR RPV INTEGRITY EVALUATIONS 259 STP 1647, 2023 / available online at www.astm.org / doi: 10.1520/STP164720220038 Tommi Sepp...

... program neutron irradiation irradiation embrittlement embrittlement trend curve fracture toughness integrity assessment 354 RADIATION EMBRITTLEMENT TREND CURVES AND EQUATIONS AND THEIR USE FOR RPV INTEGRITY EVALUATIONS STP 1647, 2023 / available online at www.astm.org / doi: 10.1520...

... updated. reactor pressure vessel irradiation surveillance program neutron irradiation irradiation embrittlement embrittlement trend equation fracture toughness integrity assessment transition temperature shift VERLIFE RADIATION EMBRITTLEMENT TREND CURVES AND EQUATIONS AND THEIR USE...

..., K IC , with compliance with the reactor vessel integrity analyses. surveillance program embrittlement trend curve fracture toughness master curve pressurized water reactor reactor pressure vessel reactor vessel integrity 382 RADIATION EMBRITTLEMENT TREND CURVES AND EQUATIONS...

... of test data from surveillance specimen programs of WWER-440/V-213C models manufactured by SKODA JS, new embrittlement trend equations for Charpy impact transition temperature shifts Δ T k as well as fracture toughness reference temperature shifts Δ T 0 were determined and included into normative...

... Fracture toughness is an important material property used to characterize material resistance against crack tearing and to assess structural integrity for a variety of engineering structures, including nuclear pressure vessels and oil and gas pipelines. ASTM E1820-18 provides the standard...

... crack length measurements. A quantitative analysis of the results is in progress. fracture toughness pipeline steel compliance direct-current electrical potential difference (DCPD) single-edge-notch-bend (SE[B]) compact tension (C[T]) crack front straightness crack tunneling remaining...

... can help avoid the drawbacks of the previous methods applied for testing fracture toughness under mixed-mode conditions. The proposed fixture has a perfect symmetry that provides pure in-plane circumstances, preventing undesired third-mode loading conditions and creating a uniform stress state...

... To enable monitoring of graphite that has been exposed to irradiated, high-temperature environments, there is a need for analysis methods that are suitable for fracture toughness measurements in small test specimens. Quasistatic fracture propagation has been studied for two candidate graphites...

..., the findings of which would support design, qualification, operation, and safety monitoring of graphite-moderated nuclear reactors. nuclear graphite temperature characterization neutron irradiation stiffness strength fracture toughness thermal physical mechanical GRAPHITE TESTING FOR NUCLEAR...

... Rolling bearing steels are primarily designed to tolerate rolling contact loads, but adequate toughness is a prerequisite. Toughness terms such as impact, notch, and fracture toughness are frequently linked to characterize tolerance to loads without fracture. Classical fracture toughness...

... test is destructive and, as a result, residual stress effects on a property such as fracture toughness would require two tests, one for residual stress and one for fracture toughness, along with an assumption that the residual stress is the same for both measurements. The new crack-compliance method...

... This paper reinvestigates the compliance equation used in ASTM E1820, Standard Test Method for Measurement of Fracture Toughness , for compact tension (C(T)) specimens. It is found that the elastic compliance equation is inconsistent with that determined from the stress intensity factor ( K...

... material properties measured by that standard. This analysis round robin was undertaken with nine participants using fifteen different previously measured load-displacement datasets from linear–elastic, K IC fracture toughness tests fabricated from aluminum, titanium, and steel material. Each round robin...

... of less than 4 % of the mean J Ic . unloading compliance fracture toughness uncertainty APPLICATION OF AUTOMATION TECHNOLOGY IN FATIGUE AND FRACTURE TESTING AND ANALYSIS 134 STP 1571, 2014 / available online at www.astm.org / doi: 10.1520/STP157120130069 Stephen M. Graham1 Uncertainty...

... of the measured fracture toughness data are enveloped by the “lower bound” ASME K Ic -curve for crack initiation and that the RT T0 concept compared to the RT NDT concept leads to lower reference temperatures for the base materials. However, for the weld materials, the general trend of RT NDT > RT T0...

... irradiated. A number of surveillance specimens are periodically extracted and tested to prove fracture toughness of the reactor vessel material remains above the acceptable limit. The present paper outlines the most recent results of the HFR surveillance program, including fracture toughness properties trend...

.... These are very low values for WWER RPV steel irradiated with fluences between 5.4 and 1.2 × 10 19 n/cm 2 ( E > 0.5 MeV) from the inner to the outer RPV wall. The fracture toughness values at cleavage failure K Jc measured on LS oriented pre-cracked and side-grooved Charpy size SE(B) specimens from...

... arrest was achieved in all eight of the tests conducted in this investigation. The cleavage cracks were observed to propagate at nearly constant velocity, typically in the range of 350–400 m∕s before arresting abruptly. A crack arrest master curve approach was used to characterize the fracture toughness...

... Eurofer'97 is the structural reference material that will be tested in the ITER modules. Its metallurgical properties have been well characterized during the last years. However, more investigations related to the fracture toughness of this material are needed to assess its integrity because...