Indentation resistance of an aluminium foam

被引：93

作者：

Olurin, OB ^{[1
]}

Fleck, NA ^{[1
]}

Ashby, MF ^{[1
]}

机构：

[1] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

来源：

SCRIPTA MATERIALIA | 2000年 / 43卷 / 11期

关键词：

aluminium foam; indentation; tear energy; monotonic and cyclic loading;

D O I：

10.1016/S1359-6462(00)00519-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Indentation loads were measured for axisymmetric flat-bottomed circular cylindrical punches, flat-plate punches and 2D wedge indenters. The indentation pressure was dependent on the indenter geometry and size, and on foam density. The mean indentation pressure decreased with increasing indenter size, until a limiting plateau pressure was attained. Tear energy extracted from indentation test data was in agreement with similar data from bearing failure, and with the mode I steady state fracture energy. Cyclic indentation reduced the maximum safe indentation load that the foam can sustain to about 0.35 times the monotonic indentation load.

引用

页码：983 / 989

页数：7

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