SIZE EFFECT ON FATIGUE CRACK INITIATION OF TRANSVERSE BUTT WELDS IN HY 100

Authors
  1. Kreuzer, W.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Wehrwissenschaftliches Institut fuer Materialuntersuchungen, Erding (West Germany)
Abstract
In the study of fatigue crack initiation of HY 100 welds, the effect of size is studied analytically and experimentally. Experiments are carried out with a specially developed fatigue procedure that allows a good determination of crack initiation. Weldments in this study were prepared with E12018M2 electrodes on HY 100 steel plates. The life to fracture of a component in fatigue is divided into two parts, the crack initiation phase and the crack propagation phase. Crack initiation is analyzed utilizing the theory of the statistical size effect so that it is possible to explain the scatter of crack initiation life and the influence of size and shape of the component. In other investigations in the past, the theory of the statistical size effect was shown to be true for unnotched and notched specimens of a homogeneous material. In this study the objective is to prove that the same theory is applicable for welded joints as well. TRUNCATED
Report Number
DREA-TC-87-310-SES-2-PAP-5 — @Paper presented at 2nd Canadian Forces/CRAD Meeting, Halifax, 26-28 May 1987; CONTAINED IN 88-02296
Date of publication
15 May 1987
Number of Pages
13
DSTKIM No
88-02287
CANDIS No
55511
Format(s):
Microfiche filmed at DSIS;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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