Deformation and Fracture of Porous Brittle Materials Under Different Loading Schemes

被引：26

作者：

Savchenko, N. L. ^{[1
,2
]}

Sablina, T. Yu. ^{[1
]}

Sevostyanova, I. N. ^{[1
]}

Buyakova, S. P. ^{[1
,2
,3
]}

Kulkov, S. N. ^{[1
,2
,3
]}

机构：

[1] Russian Acad Sci, Inst Strength Phys & Mat Sci, Siberian Branch, Tomsk, Russia

[2] Natl Res Tomsk State Polytech Univ, Tomsk, Russia

[3] Natl Res Tomsk State Univ, Tomsk, Russia

来源：

RUSSIAN PHYSICS JOURNAL | 2016年 / 58卷 / 11期

关键词：

Al2O3; ZrO2; mechanical properties; porous materials; Poisson's ratio; strength; POISSONS RATIO;

D O I：

10.1007/s11182-016-0680-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The behavior of alumina and zirconia compression- and shear-test specimens with porosity ranging from 10 to 70% is investigated. Analysis of the stress-strain curves for the materials under study has revealed a transition from a characteristically brittle fracture of fairly dense Al2O3 and ZrO2 specimens to pseudo-plastic fracture for a high porosity level. The ultimate compression strength, effective elastic and shear moduli, and Poisson's ratio are found to decrease with increase in the pore space volume of the ceramic specimens, which is shown to correlate with development of strain-induced multiple cracking of the materials.

引用

页码：1544 / 1548

页数：5

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