Relationship Between the Crack Velocity, Fractal Dimension, and Dynamic Fracture Toughness of a Material

被引：4

作者：

Bragov, A. M. ^{[1
]}

Konstantinov, A. Yu. ^{[1
]}

Kuznetsov, A. V. ^{[2
]}

Lomunov, A. K. ^{[1
]}

Savenkov, G. G. ^{[2
,3
]}

机构：

[1] Lobachevsky State Univ, Res Inst Mech, Nizhnii Novgorod 603950, Russia

[2] Armalit Machine Bldg Plant, St Petersburg 198097, Russia

[3] St Petersburg State Technol Inst Tech Univ, St Petersburg 190013, Russia

来源：

JOURNAL OF APPLIED MECHANICS AND TECHNICAL PHYSICS | 2018年 / 59卷 / 01期

关键词：

crack velocity; fractal dimension; dynamic fracture toughness; PROPAGATION; RATES;

D O I：

10.1134/S0021894418010169

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

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

引用

页码：132 / 137

页数：6

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