On the measurement of stress-strain curves by spherical indentation
On the measurement of stress-strain curves by spherical indentation
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DOI：
10.1016/s0040-6090(01)01439-0
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发表时间：
2001-11-01
期刊：
影响因子：
2.1
通讯作者：
Hay, JL
中科院分区：
文献类型：
--
作者：
Herbert, EG;Pharr, GM;Hay, JL
有人提出，与适当的模型，仪器压痕试验（IIT）数据可以减少到产生的单轴应力-应变行为的测试材料。然而，很少有工作已经做了直接比较单轴拉伸和球形压痕实验的结果。本文对6061-T6铝合金进行了压痕和单轴拉伸实验。这些实验的目的是专门探索分析模型可应用于IIT数据以预测铝合金的单轴应力-应变行为的准确性。尽管不能再现单轴应力-应变曲线的物理形状，但结果确实表明球形压痕可成功用于建立6061-T6的弹性模量和屈服强度的工程估计。(C)2001 Elsevier Science B.V保留所有权利。
It has been proposed that with the appropriate models, instrumented indentation test (IIT) data can be reduced to yield the uniaxial stress-strain behavior of the test material. However, very little work has been done to directly compare the results from uniaxial tension and spherical indentation experiments. In this work, indentation and uniaxial tension experiments have been performed on the aluminum alloy 6061-T6. The purpose of these experiments was to specifically explore the accuracy with which the analytical models can be applied to IIT data to predict the uniaxial stress-strain behavior of the aluminum alloy. Despite not being able to reproduce the physical shape of the uniaxial stress-strain curve, the results do indicate that spherical indentation can be successfully used to establish an engineering estimate of the elastic modulus and yield strength of 6061-T6. (C) 2001 Elsevier Science B.V All rights reserved.