Author
G. Odette
Bio: G. Odette is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Charpy impact test & Embrittlement. The author has an hindex of 1, co-authored 1 publications receiving 30 citations.
Papers
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01 Nov 1985
31 citations
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TL;DR: An overview of embrittlement, emphasizing the status of mechanistic understanding and models, and their role in increasing the reliability of vessel-integrity assessments, is presented in this article, where a number of outstanding issues and significant opportunities, including a new fracture-toughness master-curve method, are briefly described.
Abstract: Neutron irradiation embrittlement could limit the service life of some of the reactor-pressure vessels in existing commercial nuclear-power plants. Improved understanding the of the underlying causes of embrittlement has provided regulators and power-plant operators better estimates of vessel-operating margins. This article presents an overview of embrittlement, emphasizing the status of mechanistic understanding and models, and their role in increasing the reliability of vessel-integrity assessments. Finally, a number of outstanding issues and significant opportunities, including a new fracture-toughness master-curve method, are briefly described.
279 citations
TL;DR: In this article, a physically-based, empirically calibrated model for estimating irradiation-induced transition temperature shifts in reactor pressure vessel steels, based on a broader database and more complete understanding of embrittlement mechanisms than was available for earlier models, is presented.
121 citations
01 Jan 1990
TL;DR: In this article, the applicability of using a new automated ball indentation (ABI) test, which is a major part of the FIM, to measure the flow properties of metallic materials including those exhibiting Lueders or inhomogeneous strains (carbon steels, titanium alloys, aluminum alloys) and to estimate their fracture toughness was investigated.
Abstract: A field indentation microprobe (FIM) apparatus was developed (and patented) to evaluate, nondestructively in situ, the integrity of metallic structures. This study investigated the applicability of using a new automated ball indentation (ABI) test, which is a major part of the FIM, to measure the flow properties of metallic materials including those exhibiting Lueders or inhomogeneous strains (carbon steels, titanium alloys, aluminum alloys, etc.) and to estimate their fracture toughness. The ABI test is based on multiple indentations (at the same penetration location) of a polished metallic surface by a spherical indenter. Automation of the test, where a computer and test controller were used in innovative ways to control the test as well as to analyze test data, made it simple, rapid, accurate, economical, and reproducible. Results of ABI tests on different metals, welds, and irradiated materials are presented and discussed in this paper. Excellent agreement was obtained between ABI-derived data and those from standard ASTM uniaxial tensile and fracture toughness tests. 17 refs., 20 figs., 2 tabs.
78 citations
TL;DR: In this article, a multiscale modeling framework for the rationalization, analysis and physical assessment of the flow stress of many industrial materials, with almost no fitting parameters, is presented.
54 citations