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January 1991
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1 Citation
This paper investigates the effect of internal defects on the fatigue behaviour of friction-welded joints with an alternating torsion load. To that end specimens of St 52-3 and 42 CrMo 4 with defined and reproduceable defects will be tested. Recommendations for the extension of the calculation code for friction-welded joints will be derived from the experimental findings.
... Since a considerable amount of the friction welded (FW) structures work under cyclic loading of variable amplitude, it's important to investigate experimentally the fatigue behavior, in order to develop the predicting method of fatigue life of the FW structure. Some work [1][2][3][4][5][6][7][8][9][10][11][12] has been devoted to the cyclic fatigue of FW joints, and the focus was laid on the effects of materials, the friction welding procedures and the service conditions (such as weld flash and corrosive environments) on the fatigue behavior of FW joints, which is important and essential for engineering applications of FW struc-tures. To the knowledge of the authors, most of the FW structures are used for the mechanical elements under variable-amplitude loading (VAL), nevertheless, no expression of the S-N curve of FW joints could be found in the available literature [1][2][3][4][5][6][7][8][9][10][11][12], and there is no report on the fatigue life of FW joints under VAL. ...
January 1991
