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Stop-hole conditions to prevent re-initiation of fatigue cracks

  • Received : 2001.09.11
  • Accepted : 2002.11.18
  • Published : 2002.12.25

Abstract

In steel bridges fatigue cracks are sometimes repaired by placing drilled holes at the crack tips. From the meaning that the drilled holes stop the propagation of cracks, they are called stop-holes. Since stop-holes are regarded as an emergency measure to delay crack propagation, usually some substantial repair follows. However, if the stress at the stop-holes is below their fatigue limit, fatigue cracks would not be expected to occur. The purpose of this study is to present the conditions under which stop-holes prevent the reinitiation of fatigue cracks. The fatigue limit of stop-holes and the equations necessary to estimate the maximum stress on the circumference of the stop-holes are provided.

Keywords

References

  1. Barsom, J.M. and Rolfe, S.T. (1987), Fracture & Fatigue Control in Structures, Second Edition, Prentice-Hall, Inc., USA, 266-268.
  2. Duffy, D.G. (1998), Advanced Engineering Mathematics, CRC Press LLC, USA, 305-323.
  3. Fisher, J.W. (1984), Fatigue and Fracture in Steel Bridges, John Wiley & Sons, New York, USA.
  4. Fisher, J.W., Barthelemy, B.M., Mertz, D.R. and Edinger, J.A. (1980) "Fatigue behavior of full-scale welded bridge attachments", NCHRP Report 227, Transportation Research Board, National Research Council, USA, November.
  5. Fisher, J.W., Jin, J., Wagner, D.C. and Yen, B.T. (1990), "Distortion-induced fatigue cracking in steel bridges", NCHRP Report 336, Transportation Research Board, National Research Council, USA, December.
  6. Japan Road Association (1997), Fatigue in Steel Bridges, Maruzen, Co., Ltd., Japan, 58-62 and 285-289. (in Japanese)
  7. Japan Society of Materials Science (1995), A Handbook for Fatigue Design, Yokendo, Co., Ltd., Japan, 19-23. (in Japanese)
  8. Japanese Industrial Standard (1994), "Abrasive papers", R6252. (in Japanese)
  9. MARC (1994), Marc Analysis Research Corporation, Version K6.2, USA.
  10. Nakayama, I. (1927), "The effect of an elliptic hole in a plate subjected to bending", JSME, Japan, 30(119), 109-126.
  11. Okamura, H. (1976), Introduction to Linear Fracture Mechanics, Baihukan, Co., Ltd., Japan, 26-29. (in Japanese)
  12. Okura, I. and Ishikawa, T. (1999), "Conditions to keep drilled holes from fatigue cracking", JSSC, Japan, J. Constructional Steel, 7, 181-188. (in Japanese)
  13. Okura, I., Shiozaki, T. and Nakanishi, Y. (1996), "Fatigue strength of drilled holes under membrane and platebending stresses", JSCE, Japan, Structural Eng./Earthquake Eng., 537/I-35, 327-338. (in Japanese)
  14. Peterson, R.E. (1953), Stress Concentration Design Factors, John Wiley & Sons, Inc., USA, 78.
  15. Reissner, E. (1945), "The effect of transverse shear deformation on the bending of elastic plates", J. Applied Mechanics, USA, A69-A77, June.
  16. Timoshenko, S. and Goodier, J.N. (1951), Theory of Elasticity, Second Edition, McGraw-Hill Book Company, Inc., USA, 78-85.

Cited by

  1. Reduction of Stress Concentration at Stop-Hole by Bolting a Crack vol.20, pp.6, 2002, https://doi.org/10.1007/s13296-020-00434-1