INVESTIGATION OF THE MECHANICAL-PROPERTIES OF SILICA GLASSES BY INDENTATION TESTS

被引：4

作者：

JUHASZ, A ^{[1
]}

VOROS, G ^{[1
]}

TASNADI, P ^{[1
]}

KOVACS, I ^{[1
]}

SOMOGYI, I ^{[1
]}

SZOLLOSI, J ^{[1
]}

机构：

[1] GE TUNGSRAM, BRODY RES CTR, BUDAPEST, HUNGARY

来源：

JOURNAL DE PHYSIQUE IV | 1993年 / 3卷 / C7期

关键词：

D O I：

10.1051/jp4:19937233

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Soda lime silica glasses were investigated by continuous indentation tests. The load indentation depth curves were taken during tile loading as well as the unloading period by a computer controlled MTS machine. It was found that the loading force is a quadratic function of the indentation depth during both the loading and unloading stage of the deformation. The validity of the quadratic relationship in the case of the unloading stage seems to be characteristic only for glasses. Taking into account the elastic relaxation of the indentation depth an estimation is given for the size of the hydrostatic core which is necessary to symmetrize the stress field around the indenter. Using the measured length of the radial cracks started from the corners of the Vickers indentation pattern the K-IC values were calculated.

引用

页码：1485 / 1489

页数：5

共 14 条

[1] A CRITICAL-EVALUATION OF INDENTATION TECHNIQUES FOR MEASURING FRACTURE-TOUGHNESS .1. DIRECT CRACK MEASUREMENTS [J].