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https://doi.org/10.1299/kikaia.52.73
Copy DOIPublication Date: Jan 1, 1986 | |
License type: free |
The interaction of crack growth in hybrid bodies subjected to cyclic loading is investigated using the coupled compact tension specimens model. coupled CT specimens of 0.45% C steel, JIS S45C and aluminium alloy, A2017-T4, individually precracked to their lengths, are loaded by common pins in the grip of a fatigue machine. The crack propagation behaviour of coupled specimens fatigued under a stress ratio of 0.7 is compared with that of single specimens. The interaction curve for coupled hybrid specimens is theoretically predicted and the interaction law is discussed. the proposed interaction principal, which is on the basis of the distribution of the total elastic energy release rate in coupled specimens, shows good agreement with experimental results compared with the method by Marek, based on the maximum energy release rate.
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