Experimental and Numerical Evaluation of Crack Arresting Capability Due to a Dimple
Source abstract
Abstract
Crack arresting capability is experimentally examined using center cracked tension specimens and varying the placement of the dimple ahead of the crack tip. It is confirmed that the dimple gives a greater crack arrest effect than that of the stop hole method. Next, the fatigue life of smooth specimens is compared, both with and without dimples. It is indicated that the dimple has a benefit only to the repair case after the crack is initiated. Finally, stress intensity factors of a crack due to a dimple are numerically evaluated, and a guiding principle is clarified for placing dimples.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fatigue and fracture mechanics · Mechanical stress and fatigue analysis · Engineering Structural Analysis Methods
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Materials Research Section, Mitsubishi Heavy Industries, Ltd., Nagoya Aerospace Systems Works, 10, Oye-cho, Minato-ku, Nagoya 455-8515, Japan
References (6)
Show source-provided references
1. Broek, D., 1975, “Cracks at Structural Holes,” MCIC-75-25, Metals and Ceramics Information Center, Columbus, OH.
2. Broek, D., 1982, Elementary Engineering Fracture Mechanics, 3rd Edition, Martinus Nijhoff Publishers, The Hauge.10.1007/978-94-011-9055-8 ↗
3. Harris, D. O. , 1972, “Stress Intensity Factors for Transversely Loaded Elastic Plates and Their Application to Predictions of Crack Arrest,” Eng. Fract. Mech., 4, pp. 277–294.10.1016/0013-7944(72)90042-2 ↗
4. Goto, M., Miyagawa, H., and Nisitani, H., 1996, “Crack Growth Arresting Property of a Hole and Brinell-Type Dimple,” Fatigue Fract. Eng. Mater. Struct., 19(1), pp. 39–49.10.1111/j.1460-2695.1996.tb00930.x ↗
5. Sarchamy, D., Moss, S., Burns, M. G., Lawford, K., and Hunt, E., 1997, “Fatigue Crack Retardation in Aluminum Alloys by Means of Squeeze Dimpling,” Fatigue in New and Ageing Aircraft, Proc. of 19th Symposium of the International Committee on Aeronautical Fatigue, Edinburgh, EMAS, London, Vol. II, pp. 707–718.
6. Tada, H., Paris, P. C., and Irwin, G. R., 2000, The Stress Analysis of Cracks Handbook, 3rd Edition, ASME, New York.10.1115/1.801535 ↗