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Keywords: fracture toughness
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eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7741-3
... 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...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7741-3
... 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...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7741-3
... 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...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7741-3
..., 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...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7741-3
... 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...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7733-8
... 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...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7733-8
... 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...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7733-8
... 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...
eBook Chapter
... 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...
eBook Chapter
..., 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...
eBook Chapter
Series: ASTM Manuals
Publisher: ASTM International
Published: 2022
ISBN: 978-0-8031-7150-3
... 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...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2021
ISBN: 978-0-8031-7690-4
... Fracture toughness is required for fracture initiation and leak-before-break evaluation of Zr-2.5Nb pressure tubes in Canadian Deuterium Uranium, or CANDU, reactors. The effects of high hydrogen concentration ([H]) and associated hydride morphology on fracture toughness need to be better...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2018
ISBN: 978-0-8031-7651-5
... changes that have occurred over time in E185. reactor pressure vessel surveillance programs radiation embrittlement fracture toughness INTERNATIONAL REVIEW OF NUCLEAR REACTOR PRESSURE VESSEL SURVEILLANCE PROGRAMS 1 STP 1603, 2018 / available online at www.astm.org / doi: 10.1520...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2018
ISBN: 978-0-8031-7651-5
... in that it operates under high pressures and temperatures and is exposed to relatively high neutron radiation. Although typical RPV steels and welds have excellent fracture toughness at room temperature and above when put into service, the degrading effects of high-energy neutron irradiation can cause levels...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2018
ISBN: 978-0-8031-7651-5
... in the surveillance results and in demonstrating the existence of additional safety margins with respect to the regulatory approach are highlighted. Keywords reactor pressure vessel, irradiation embrittlement, surveillance, fracture toughness, specimen reconstitution, instrumented Charpy 251 Introduction Nuclear...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2018
ISBN: 978-0-8031-7651-5
.... These programs for ensuring continued safe and long-term reactor pressure vessel operation are discussed in this paper. reactor pressure vessel surveillance programs radiation embrittlement fracture toughness embrittlement trend correlation INTERNATIONAL REVIEW OF NUCLEAR REACTOR PRESSURE VESSEL...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2018
ISBN: 978-0-8031-7651-5
... and indicated no irradiation-induced embrittlement within the fluence range of 5.38 to 1.20 × 10 19 n/cm 2 ( E > 0.5 MeV) through the thickness of the RPV wall. More than the allowed 2 % of the specimen size-adjusted fracture toughness values, K Jc - 1T , were below the fracture toughness curve for 2...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2017
ISBN: 978-0-8031-7639-3
... 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...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2017
ISBN: 978-0-8031-7639-3
... 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...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2014
ISBN: 978-0-8031-7587-7
... 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...