By D. Francois
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Additional resources for Advances in Fracture Research. Proceedings of the 5th International Conference on Fracture (ICF5), Cannes, France, 29 March–3 April 1981
For example, the influence of super-imposed small amplitude vibrations at high frequency deserves more study. At high temperatures it would be of interest to explore possible relationships of fatigue crack growth rate to creep and to cyclic hysteresis. Surely the greatest challenge is the prevention of fatigue cracking in structures exposed to load fluctuations. Given the somewhat relentless and kinematic nature of fatigue crack growth behavior, this is not an easy task. SLOW-STABLE CRACKING; 5TRE55 CORROSION As noted before, the fracture mechanics viewpoint received strong interest from aero-space projects beginning about 1958.
Barth and P. Rieth 2355 Effect of temperature and hold time on low-cycle fatigue of steel 13 CRMO 44 K. T. Rie, E. Lachmann and J. Rüge 2371 Interaction of damage mechanisms during high temperature fatigue A. Plumtree and J. Lemaitre 2379 Effect of hold times on the elevated temperature fatigue crack growth behavior of Inconel 718 alloy J. P. Pedron and A. Pineau 2385 Hold time effects on low cycle fatigue properties of 316L stainless steel at 600 and 650 degrees C B. Rezgui, P. Petrequin and M.
Before try ing to answer that question, let me mention another situation. Many structures are typically fabricated by welding. Common weld designs often introduce geometries that are effective cracks although unintentional. Further, the process of welding in itself inevitably leads to a compromise between a slow welding speed which minimizes the disturbance of the metal and a high welding speed to increase productivity. The welding process, subsequent inspection and weld repairs present numerous opportunities for human efforts that while well intentioned may be imperfect.
Advances in Fracture Research. Proceedings of the 5th International Conference on Fracture (ICF5), Cannes, France, 29 March–3 April 1981 by D. Francois