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On characteristic lengths used in notch fracture mechanics

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Abstract

In this paper, four kinds of characteristic length parameters used in a local notch fracture criterion are presented: (1) a characteristic length \({\uprho }_{\mathrm{c}}\) generally connecting to the notch radius, (2) a characteristic distance \(\hbox {X}_{\mathrm{c}}\) considered as intrinsic to material and connected to the microstructure, (3) a critical distance \(\hbox {d}_{0}\) considered as intrinsic to material and connected to the fracture process zone, (4) an effective distance \(\hbox {X}_{\mathrm{ef}}\) considered as a characteristic of the stress distribution. Each approach is discussed. The paper ends with the author’s opinion about the different methods.

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  1. LaBPS - Ecole Nationale d’Ingénieurs de Metz, 1 route d’Ars Laquenexy, 57078,  Metz, France

    G. Pluvinage & J. Capelle

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  1. G. Pluvinage
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  2. J. Capelle
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Correspondence to G. Pluvinage.

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Pluvinage, G., Capelle, J. On characteristic lengths used in notch fracture mechanics. Int J Fract 187, 187–197 (2014). https://doi.org/10.1007/s10704-013-9924-2

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