Full Content is available to subscribers

Subscribe/Learn More  >

Fretting Fatigue Strength of Nozzle Shaped Structure

[+] Author Affiliations
Makoto Hayashi, Takashi Ito

Hitachi, Ltd., Hitachi, Ibaraki, Japan

Paper No. PVP2004-2989, pp. 171-176; 6 pages
  • ASME/JSME 2004 Pressure Vessels and Piping Conference
  • Elevated Temperature Design and Analysis, Nonlinear Analysis, and Plastic Components
  • San Diego, California, USA, July 25–29, 2004
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4667-9
  • Copyright © 2004 by ASME


In-Core Monitor (ICM) housing of BWR reactor pressure vessel is subjected to the flow induced vibration (FIV). The flow fluctuation takes places in the lower plenum of reactor pressure vessel. It is very much important to evaluate the structural integrity of ICM housing in order to maintain high operating rate. Thus we performed the FIV simulated fatigue test of ICM housing. However, the stress at the weld toe induced by FIV is sufficiently low not to fail. The fatigue endurance limit for the weld root fatigue test specimen with dull taper is 196 MPa. On the while, the fatigue endurance limit for the weld root fatigue test specimen with steep taper is not obtained. When the fatigue test results are approximated by the Stromeyer equation, the fatigue strength for the fatigue life of 109 cycles is estimated as 27 MPa. Finally we performed the fracture mechanics analysis, which indicates that the stress intensity factors for Mode I and II range from 0.1 to 0.2 MPam so that the fatigue crack is not initiated at the weld root by FIV.

Copyright © 2004 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In