| 一种测量金属薄板拉伸应变硬化指数的方法 |
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| 引用本文： | 田晨超,许飞,焦磊,张娟.一种测量金属薄板拉伸应变硬化指数的方法[J].焊管,2016,39(9):59-61. |
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| 作者姓名： | 田晨超 许飞 焦磊 张娟 |
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| 作者单位： | 西北有色金属研究院， 西安 710016 |
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| 摘 要： | 为实现视频引伸计在应变硬化指数n值测试过程中的应用，以弥补短行程接触式引伸计测量范围的不足，依据GB/T 5028—2008中有关薄板拉伸应变硬化指数的测试方法，采用INSTRON 5985视频引伸计，通过软件Bluehill 3的自动测量及人工测量方式在规定回归区间进行了n5~15值的测定，并采用简化公式进行了验证。结果表明，n5~15值均为0.18，满足能力比对试验结果的测试要求。
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| 关 键 词： | 应变硬化指数 视频引伸计 自动测量 人工测量 |
One Method of Measuring Metal Sheet Tensile Strain Hardening Exponent |
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| TIAN Chenchao,XU Fei,JIAO Lei,ZHANG Juan.One Method of Measuring Metal Sheet Tensile Strain Hardening Exponent[J].Welded Pipe and Tube,2016,39(9):59-61. |
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| Authors: | TIAN Chenchao XU Fei JIAO Lei ZHANG Juan |
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| Affiliation: | Northwest Institute of Nonferrous Metal Research, Xi’an 710016, China |
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| Abstract: | In order to realize application of the video extensometer in the strain hardening exponent n value testing process, to make up for the measurement range shortage of the short stroke contact extensometer. Based on the related test method of metal sheet tensile strain hardening exponent in GB/T 5028—2008, using INSTRON 5985 video extensometer to measure n5~15 value, by means of the software Bluehill 3 automatic measurement and manual measurement methods in the specified regression interval, and the simplified formula was used to verify the methods. The results showed that the n5~15 value is 0.18, which meets the requirements of the ability comparison test results. |
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| Keywords: | strain hardening exponent video extensometer automatic measurement manual measurement |
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