Curve Fitting and Uncertainty Analysis of Charpy Impact Data PDF Download
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Author: Friedemann Stallmann
Publisher:
ISBN:
Category : Nuclear pressure vessels
Languages : en
Pages : 34
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Book Description
Author: Friedemann Stallmann
Publisher:
ISBN:
Category : Nuclear pressure vessels
Languages : en
Pages : 34
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Book Description
Author:
Publisher:
ISBN:
Category : Nuclear power plants
Languages : en
Pages : 994
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Author:
Publisher:
ISBN:
Category : Fracture mechanics
Languages : en
Pages : 322
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Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 480
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Author: Margaret L. Hamilton
Publisher: ASTM International
ISBN: 0803128525
Category : Materials
Languages : en
Pages : 1266
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1572
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Author:
Publisher:
ISBN:
Category : Materials
Languages : en
Pages : 1296
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Shifts in transition temperature and upper-shelf energy from Charpy tests are used to determine the extent of radiation embrittlement in steels. In order to determine these parameters reliably and to obtain uncertainty estimates, curve fitting procedures need to be used. The hyperbolic tangent or similar models have been proposed to fit the temperature-impact-energy curve. These models are not based on the actual fracture mechanics and are indeed poorly suited in many applications. The results may be falsified by forcing an inflexible curve through too many data points. The nonlinearity of the fit poses additional problems. In this paper, a simple linear fit is proposed. By eliminating data which are irrelevant for the determination of a given parameter, better reliability and accuracy can be achieved. Additional input parameters like fluence and irradiation temperature can be included. This is important if there is a large variation of fluence and temperature in different test specimens. The method has been tested with Charpy specimens from the NRC-HSST experiments.
Author: American Nuclear Society
Publisher:
ISBN:
Category : Nuclear engineering
Languages : en
Pages : 778
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Author: Friedemann Stallmann
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 42
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