Determination of the Crack Tip Position by Digital Image Correlation during Static and Cyclic Fracture Toughness Tests of Aluminum Alloys

被引：3

作者：

Avtaev, V. V. ^{[1
]}

Yakovlev, N. O. ^{[1
]}

Erasov, V. S. ^{[1
]}

Podzhivotov, N. Yu. ^{[1
]}

机构：

[1] All Russia Inst Aviat Mat, Moscow 105005, Russia

来源：

RUSSIAN METALLURGY | 2019年 / 2019卷 / 04期

关键词：

digital image correlation; fracture toughness; crack tip; stress intensity factor; experimental mechanics; fracture mechanics; STRESS INTENSITY;

D O I：

10.1134/S0036029519040025

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Aluminum alloy V-1167RDTV specimens 1 mm thick with a central crack are used to determine the position of the tip of a mode I crack from a strain field distribution during cyclic loading in the course of fatigue crack growth rate tests and during static loading in determining the force characteristics of fracture toughness. When analyzing the displacement and strain distributions at the crack tip, we proposed a technique to measure the length of a statically growing crack to determine critical stress intensity factor K-c for a mode I crack in plane-stress state.

引用

页码：458 / 465

页数：8

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