INFLUENCE OF SPECIMEN SIZE ON FATIGUE CRACK INITIATION OF WELDED HY100 STEEL

Authors
  1. Kreuzer, W.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Wehrwissenschaftliches Institut fuer Materialuntersuchungen, Erding (West Germany)
Abstract
The assumption of a statistical distribution of the flaws in a component leads to a prediction of a correlation between crack initiation life and the size of a fatigue loaded part. The influence of the specimen size on the fatigue crack initiation behaviour was analysed for two series of welded HY 100 steel plates of different widths. The weldments were prepared with E12018M2 electrodes. The applicability of the theory of the statisitical size effect was shown in the range of finite endurance. The prediction of the number of cycles to crack initiation and of the allowable stresses for samples of a different size agreed well with the experimental results.
Report Number
DREA-TM-88-201 — Technical Memorandum
Date of publication
15 Jan 1988
Number of Pages
75
DSTKIM No
88-01552
CANDIS No
54784
Format(s):
Microfiche filmed at DSIS;Originator's fiche received by DSIS;Hardcopy

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