Paper Title:
An Evaluation of Fatigue Crack Growth in a Reactor Steel in Air and Water Environments Considering Closure Effects
  Abstract

The paper contains results of an experimental programme aimed at an evaluation of fatigue crack growth rate and threshold conditions in a reactor pressure vessel steel. Though the main target of the work was to gain a data basis for possible future needs of defect and risk assessment, an emphasis was put on an evaluation of crack growth mechanisms, too. It was shown that despite some recent works infirming crack closure phenomenon itself or methods of its evaluation, crack closure explained near-threshold fatigue crack behaviour in the specific case of the reactor steel in air conditions and was in a direct consistency with results of fractographical analyses. A fairly recent model of partial crack closure was very suitable for an explanation of an unexpected fatigue crack growth behaviour in water environment, when fatigue crack growth rates were rather irregular and significantly lower that in air.

  Info
Periodical
Key Engineering Materials (Volumes 348-349)
Edited by
J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel
Pages
65-68
DOI
10.4028/www.scientific.net/KEM.348-349.65
Citation
I. Černý, V. Linhart, "An Evaluation of Fatigue Crack Growth in a Reactor Steel in Air and Water Environments Considering Closure Effects", Key Engineering Materials, Vols. 348-349, pp. 65-68, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Masumi Saka, Yang Ju, Y. Uchimura, Toru Miyadu
Abstract:A method to estimate crack closure stress on the crack surface was introduced. The crack closure stress was estimated based on the compliance...
955
Authors: Yang Ju, Toru Miyadu, Hitoshi Soyama, Masumi Saka
Abstract:Quantitative evaluation of small cracks in stainless steel under water, which simulated the environment of unclear reactor, by using...
2361
Authors: A.J. McEvily
Abstract:Many of the recent advances in the understanding of the fatigue crack growth process have resulted from an improved realization of the...
15
Authors: Ivo Černý, Dagmar Mikulová
Abstract:Al 7075 alloy is a high strength material usually used for highly stressed components in lightweight structures, typically in aircraft,...
325