Abstract
After a short review of the papers by Odorico and Bathias presented to the AGARD Structures and Materials Panel Specialists' Meeting on Fracture Mechanics Design Methodology, 28–29 September 1976, London, the place of Fracture Mechanics in the Strength of Structures domain is considered as well as the still limited help afforded to the designer by the mass of published Fracture Mechanics data and the means of increasing the practical usefulness of these data by carrying out detailed investigations of actual cases of local failures occurring in static strength tests, full-scale fatigue tests and of damages in operations are discussed. It is proposed to discard the academic domain of cracks assumed to exist at the centres of thin sheet panels, far from the most probable damage origins, and to attempt to define classes of actual problems related to known or unknown stress concentrations in assemblies. These classes are so general that they justify detailed investigations which will supply tables of numerical data rapidly usable by the designer.
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