Paper Title:
Study on Stress Distribution Near Crack Tip in Beryllium Compact Tension Specimen
  Abstract

In order to evaluate the fracture characteristic near the crack tip of beryllium specimen, beryllium compact tension specimen with plane strain state is designed. The stress distribution near the crack tip is measured at different loading level by X3000 stress analyzer. Moreover, a finite element model for calculated the stress and strain fields in beryllium compact tension specimen has also been set up. As a result, the stress and strain distribution near the crack tip at different loading has been calculated by this model. According to the critical tension loading of beryllium specimen, the maximum plastic strain and the radius of the plastic zone near the crack tip are determined, where the maximum plastic strain near the crack tip is about 0.018 and the maximum radius of plastic zone is about 0.3mm. Altogether, the fracture toughness of beryllium is obtained, which is about 19.1MPam1/2.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
2487-2490
DOI
10.4028/www.scientific.net/MSF.654-656.2487
Citation
P. Dong, R. W. Li, S. H. Li, "Study on Stress Distribution Near Crack Tip in Beryllium Compact Tension Specimen", Materials Science Forum, Vols. 654-656, pp. 2487-2490, 2010
Online since
June 2010
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Price
$32.00
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