A method for direct measurement of multiaxial stress-strain curves in sheet metal

被引：41
|
作者：
Foecke, T. [1 ]
Iadicola, M. A. [1 ]
Lin, A. [1 ]
Banovic, S. W. [1 ]
机构：
[1] NIST, Div Met, Dept Commence, Technol Adm, Gaithersburg, MD 20899 USA
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2007年 / 38A卷 / 02期
关键词：
D O I：
10.1007/s11661-006-9044-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A method has been developed that allows measurement of stress-strain curves for sheet metal being deformed in multiaxial tension. The strain state is imposed using a modification of the Marciniak in-plane biaxial stretching test. Resulting stresses are measured using a modified Xray diffraction (XRD) residual stress measurement system. This system is flexible enough to allow spatial mapping of in-plane stress and measurement of stresses at specific locations of interest on the sample, such as developing localizations. Results are presented correlating measurements on a thin strip of AA5182 with data from standard uniaxial tension test. Also presented are experimentally determined curves for this material in balanced biaxial tension in both the rolling and transverse directions.
引用
收藏
页码：306 / 313
页数：8
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