首页> 外国专利> 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

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

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.
机译:本发明涉及一种通过使用数字图像解释技术通过减小标距长度来准确地获得高应变截面中的材料的真实应力-真实应变曲线的方法。本发明涉及一种提取拉伸试样的真实应力-真实应变曲线的方法,其中该方法通过比简单的计算来计算局部均匀应变来计算高应变截面中的材料的真实应力-真实应变曲线。现有的其他尝试是通过在拉伸试验中减小标距来进行的,这是一般材料的机械性能评估方法。

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