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METHOD OF OBTAINING RELIABLE TRUE STRESS-STRAIN CURVES IN A LARGE RANGE OF STRAINS IN TENSILE TESTING USING DIGITAL IMAGE CORRELATION
METHOD OF OBTAINING RELIABLE TRUE STRESS-STRAIN CURVES IN A LARGE RANGE OF STRAINS IN TENSILE TESTING USING DIGITAL IMAGE CORRELATION
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机译:利用数字图像相关性在拉伸试验中获得大应变范围内可靠的真实应力-应变曲线的方法
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摘要
The present invention relates to a method for accurately obtaining a true stress-true strain curve of a material in high strain section by reducing the gauge length by using a digital image interpretation technique. The present invention relates to a method for extracting a true stress-true strain curve of a tensile specimen, wherein the method calculates a true stress-true strain curve of a material in high strain section by calculating a locally uniform strain via a calculation simpler than existing other attempts by making the gauge length smaller in a tensile test, which is a mechanical property evaluation method of a general material.
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