A. M. Bragov, A. Yu. Konstantinov, A. V. Kuznetcov, A. K. Lomunov, G. G. Savenkov, “Relationship between the crack velocity, fractal dimension, and dynamic fracture toughness of a material”, Prikl. Mekh. Tekh. Fiz., 2018, Volume 59, Issue 1,Pages <nobr>153

This article is cited in 3 papers

Relationship between the crack velocity, fractal dimension, and dynamic fracture toughness of a material

A. M. Bragov^a, A. Yu. Konstantinov^a, A. V. Kuznetcov^b, A. K. Lomunov^a, G. G. Savenkov^bc

^a Research Institute of Mechanics, N. Novgorod State University, Nizhnii Novgorod, 603950, Russia
^b Armalit Machine-Building Plant, St. Petersburg, 198097, Russia
^c State Technological Institute of St. Petersburg (Technical University), St. Petersburg, 190013, Russia

Abstract: This paper presents the results of experimental studies of the crack propagation velocity and dynamic fracture toughness of St. 45 steel and D16T duralumin using a modified Kolsky method on a split Hopkinson bar. The results of microfractografic analysis of samples are given, and the fractal dimension is determined. The critical stress intensity factors are determine using the obtained fractal dimension values.

Keywords: crack velocity, fractal dimension, dynamic fracture toughness.

UDC: 539.4

Received: 19.04.2016
Revised: 09.12.2016

DOI: 10.15372/PMTF20180116