An Experimental Investigation of Tubular T-Joints Under Cyclic Loads-Reference-Cited by-同舟云学术

An Experimental Investigation of Tubular T-Joints Under Cyclic Loads

Published:1999-08-01 Issue:3 Volume:121 Page:137-143
ISSN:0892-7219
Container-title:Journal of Offshore Mechanics and Arctic Engineering
language:en
Short-container-title:

Author:

Cheng S. M.¹,Swamidas A. S. J.²,Wallace W.³,Wu X.³

Affiliation:

1. Institute for Aerospace Research, National Research Council Canada, Montreal Road, M-7, Ottawa, ON, Canada K1A 0R6

2. Memorial University of Newfoundland, St. John’s, NF, Canada A1B 3X5

3. Institute for Aerospace Research, National Research Council Canada, Montreal Road, Ottawa, ON, Canada K1A 0R6

Abstract

This paper presents an experimental study of fatigue crack initiation and growth in tubular T-joints, simulating the extreme case of those used for offshore platforms. The crack locations and profiles were recorded and fractographic examinations were carried out to reveal the mechanisms of crack initiation, growth, and crack closure. The relationships between crack length/depth and the numbers of fatigue cycle were analyzed using the Paris equation. During testing, the static strain responses at selected gage locations were also recorded. The variations in the static strains caused by the formation and growth of cracks were correlated with fatigue cycles by a characteristic equation. These results and correlations are useful for understanding the fatigue damage process and for monitoring the development of such damage in tubular T-joints of offshore structures.

Publisher

ASME International

Subject

Mechanical Engineering,Ocean Engineering

Link

http://asmedigitalcollection.asme.org/offshoremechanics/article-pdf/121/3/137/5681876/137_1.pdf

Reference16 articles.

1. Bouwkamp, J. G., 1966, “Tubular Joints under Slow-Cycle Alternating Loads,” Proceedings, International Symposium on the Effect of Repeated Loading on Materials and Structures, RILEM, Mexico City, Mexico, Vol. VI.

2. Cheng S. M. , SwamidasA. S. J., WallaceW., and WuX. J., 1999, “Nondestructive Detection of Cracks in Tubular T-Joints Using Vibration Characteristics,” ASME JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING, Vol. 121, Aug., pp. 144–152.

3. Dijkstra, O. D., and deBack, J., 1980, “Fatigue Strength of Tubular T and X-Joints,” Paper No. 3696, Proceedings, Offshore Technology Conference, Houston, TX.

4. Dover, W. D., and Holdbrook, S. J., 1979, “Fatigue Crack Growth in Tubular WeldedConnections,” Paper No. 40, Proceedings, 2nd International Conference on Behavior of Offshore Structures, London, U.K.

5. Gibstein, M. B., 1981, “Fatigue Strength of Welded Tubular Joints Tested at Dnv Laborations,” Paper No. TS 8.5, Proceedings, International Conference on Steel in Marine Structures, Paris, France.

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