| 数字图像相关测量钢绞线弹性模量的应用研究 |
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| 引用本文： | 张蕊,贺玲凤,胡斌.数字图像相关测量钢绞线弹性模量的应用研究[J].工程力学,2011(9):251-256. |
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| 作者姓名： | 张蕊 贺玲凤 胡斌 |
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| 作者单位： | 华南理工大学土木与交通学院; |
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| 摘 要： | 该文利用非接触式数字图像相关方法测量了预应力钢绞线的弹性模量。测量过程中用CCD相机记录不同载荷下钢绞线表面的数字图像，再利用数字图像相关方法对所采集的序列数字图像进行分析从中精确提取不同载荷下钢绞线表面的纵向平均正应变。根据试验机的载荷信息、钢绞线的参考截面积和由数字图像相关方法测量的平均正应变绘制出钢绞线的应力-应...
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| 关 键 词： | 数字图像相关 钢绞线 弹性模量 位移 应变 |
ELASTIC MODULUS MEASUREMENT OF STRAND WITRE BY DIGITAL IMAGE CORREALTION |
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| ZHANG Rui,HE Ling-feng,HU Bin.ELASTIC MODULUS MEASUREMENT OF STRAND WITRE BY DIGITAL IMAGE CORREALTION[J].Engineering Mechanics,2011(9):251-256. |
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| Authors: | ZHANG Rui HE Ling-feng HU Bin |
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| Affiliation: | ZHANG Rui,HE Ling-feng,HU Bin(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | The elastic modulus of strand wires under uniaxial tension is measured using a digital image correlation method(DIC) in this paper.The surface images of the strand wire surface subjected to various loadings were captured using a CCD camera.DIC is subsequently used to obtain displacement field by correlating the images captured before and after deformation,and then the average tensile strain is obtained by fitting the displacement using a linear plane.The slope of each set of applied stress versus measured s... |
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| Keywords: | digital image correlation strand wire elastic modulus displacement strain |
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