Abstract
It is shown that the dynamic fracture toughness of materials substantially depends on the history of loading; this determines instability in the behaviour of this quantity under shock-wave loading. It is found that the minimal value of the dynamic fracture toughness can amount to 50% of the corresponding static value. In engineering practice, this quantity can be regarded as the initial critical parameter, which must be taken into account while choosing materials working under pulsed loading.
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Original Russian Text © V.I. Smirnov, 2006, published in Zhurnal Tekhnicheskoĭ Fiziki, 2006, Vol. 76, No. 11, pp. 134–136.
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Smirnov, V.I. Unstable behavior of the dynamic fracture toughness. Tech. Phys. 51, 1528–1530 (2006). https://doi.org/10.1134/S1063784206110235
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DOI: https://doi.org/10.1134/S1063784206110235