Effects of cracks in irradiation-embrittled hexagonal subassembly ducts


Journal Article

Plane-strain stress intensity factors for hexagonal subassembly ducts with a crack in a corner or midflat are presented in convenient graphical form for representative LMFBR hexcan dimensions. Calibrations based on several different models of the round hexcan corner and a finite element analysis of a uniformly pressurized hexcan with a corner crack corroborate each other. A weight function for this geometry is validated, and simple analytical tools are demonstrated to be adequate for parametric studies of cracked hexagonal ducts. The effects of different numbers of cracks, different locations for cracks, and different loading modes are discussed and some comments are made on the application of linear elastic fracture mechanics to cracked hexagonal ducts which have suffered a high degree of fast-neutron irradiation embrittlement. © 1978.

Full Text

Duke Authors

Cited Authors

  • Petroski, HJ; Glazik, JL

Published Date

  • January 1, 1978

Published In

Volume / Issue

  • 49 / 1-2

Start / End Page

  • 51 - 68

International Standard Serial Number (ISSN)

  • 0029-5493

Digital Object Identifier (DOI)

  • 10.1016/0029-5493(78)90051-1

Citation Source

  • Scopus