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Fatigue Crack Growth under Cyclic Compression: Role of First Load Cycle
Crack growth from a notch tip, under the influence of cyclic compression loading is investigated in center cracked specimens of a lower strength steel. Such cracks, caused by the residual tensile deformations at the notch unloading, progressively decelerate until complete arrest occurs. The build up of crack closure during crack advance is considered. The influence of the first underload cycle on the elastic-plastic notch field, crack initiation, crack extension, and crack arrest is examined. Experimental measurements correlate well with numerically obtained estimates of the crack closure loads assuming plane stress conditions.
Fatigue Crack Growth under Cyclic Compression: Role of First Load Cycle
Crack growth from a notch tip, under the influence of cyclic compression loading is investigated in center cracked specimens of a lower strength steel. Such cracks, caused by the residual tensile deformations at the notch unloading, progressively decelerate until complete arrest occurs. The build up of crack closure during crack advance is considered. The influence of the first underload cycle on the elastic-plastic notch field, crack initiation, crack extension, and crack arrest is examined. Experimental measurements correlate well with numerically obtained estimates of the crack closure loads assuming plane stress conditions.
Fatigue Crack Growth under Cyclic Compression: Role of First Load Cycle
A. F. Blom (author) / D. K. Holm (author) / S. Suresh (author)
1986
27 pages
Report
No indication
English
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