Fatigue Crack Growth in Welded Beams,

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Abstract:

The fatigue behavior of welded steel beams is evaluated using the fracture mechanics concepts of stable crack growth. A fracture mechanics model for cracks originating from the pores in the web-to-flange fillet weld is developed. Esstimates of the stress-intensity factor are made that numerically describe the initial flaw condition. With the final crack size known, a theoretical crack-growth equation was derived from the fatigue test data of the welded beams. The derived relationship compares well with actual crack-growth measurements on a welded beam and available data from crack growth specimens. Author

Author(s):
Hirt, M. A. ; Fisher, J. W.
Author Organization(s):
LEHIGH UNIV BETHLEHEM PA FRITZ ENGINEERING LAB
Pagination:
0042

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
FEL-358.35
Contract/Grant Number(s):
N00014-68-A-0514
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*BEAMS(STRUCTURAL), CRACK PROPAGATION), FATIGUE(MECHANICS), WELDS, PREDICTIONS, NUMERICAL ANALYSIS, STEEL
Field(s)/Group(s):
Structural Engineering and Building Technology
Report Date:
1971 Jan 01