Accession Number : AD0738448

Title :   Fatigue Crack Growth in Welded Beams,

Corporate Author : LEHIGH UNIV BETHLEHEM PA FRITZ ENGINEERING LAB

Personal Author(s) : Hirt,M. A. ; Fisher,J. W.

Report Date : JAN 1972

Pagination or Media Count : 42

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)

Descriptors :   (*BEAMS(STRUCTURAL), CRACK PROPAGATION), FATIGUE(MECHANICS), WELDS, PREDICTIONS, NUMERICAL ANALYSIS, STEEL

Subject Categories : Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE