Reliability of Structures Containing Short Cracks-Reference-Cited by-同舟云学术

Reliability of Structures Containing Short Cracks

Published:1999-08-01 Issue:3 Volume:121 Page:153-158
ISSN:0892-7219
Container-title:Journal of Offshore Mechanics and Arctic Engineering
language:en
Short-container-title:

Author:

Lanning D.¹,Shen M.-H. H.¹

Affiliation:

1. Department of Aerospace Engineering, Applied Mechanics and Aviation, The Ohio State University, 2036 Neil Avenue, Room 328 BOLZ Hall, Columbus, OH 43210-1276

Abstract

The reliability of structures containing short cracks is investigated. Short fatigue cracks are generally acknowledged to be small cracks propagating at rates that are faster or anomalous when compared to standard fracture analysis predictions developed for longer cracks. The extent of the short crack behavior tends to depend on mechanism such as the existence of notch plasticity surrounding the short crack. Techniques are presented for calculating the probability that short surface cracks will propagate without arresting to a size where the growth can then be analyzed using linear elastic fracture mechanics concepts. It is also shown how crack closure measurements can be incorporated into the fatigue reliability analysis to assist life predictions for short cracks.

Publisher

ASME International

Subject

Mechanical Engineering,Ocean Engineering

Link

http://asmedigitalcollection.asme.org/offshoremechanics/article-pdf/121/3/153/5681798/153_1.pdf

Reference22 articles.

1. Elber, W., 1971, “The Significance of Fatigue Crack Closure,” Damage Tolerance in Aircraft Structures, STP 486, American Society for Testing and Materials, Philadelphia, PA, pp. 230–242.

2. Fu B. , HaswellJ. V., and BettessP., 1993, “Weld Magnification Factors for Semi-Elliptical Surface Cracks in Fillet Welded T-Butt Joint Models,” International Journal of Fracture, Vol. 63, pp. 155–171.

3. El Haddad M. H. , SmithK. N., and TopperT. H., 1979, “Fatigue Crack Propagation of Short Cracks,” ASME Journal of Engineering Materials and Technology, Vol. 101, Jan., pp. 42–46.

4. Hasofer A. M. , and LindN. C., 1971, “Exact and Invariant Second-Moment Code Format,” Journal of Engineering Mechanics, Vol. 100, pp. 111–121.

5. Lanning Jr., D. B., and Shen, M.-H. H., 1996, “Reliability of Welded Structures Containing Fatigue Cracks,” to appear in ASME JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING.