| 试样尺寸对钢板塑性应变比r的影响 |
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| 引用本文： | 徐惟诚,施强忠,李和平,苏大雄. 试样尺寸对钢板塑性应变比r的影响[J]. 理化检验(物理分册), 2009, 45(2): 94-96 |
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| 作者姓名： | 徐惟诚 施强忠 李和平 苏大雄 |
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| 作者单位： | 徐惟诚,施强忠,李和平,XU Wei-cheng,SHI Qiang-zhong,LI He-ping(上海宝钢工业检测公司品质检验中心,上海,200941);苏大雄,SU Da-xiong(宝钢分公司制造管理部,上海,200941) |
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| 摘 要： | 选用三种尺寸的拉伸试样测试塑性应变比（r值）。通过试验和数据分析，得出当试验标距接近试样平行长度时，r值将下降。其原因是当标距接近试样平行长度时，试样标距内的应变是不均匀的。
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| 关 键 词： | 试样形状 r值 标距 应变水平 |
Effect of Specimen Size on the Plastic Strain Ratio r of steel plate |
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| XU Wei-cheng,SHI Qiang-zhong,LI He-pingSU Da-xiong. Effect of Specimen Size on the Plastic Strain Ratio r of steel plate[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2009, 45(2): 94-96 |
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| Authors: | XU Wei-cheng SHI Qiang-zhong LI He-pingSU Da-xiong |
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| Affiliation: | Quality testing and Inspection center;Baosteel Industry Inspection corporation;Shanghai 200941;China;Manufacturing Management Department;Baosteel branch;China |
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| Abstract: | The plastic strain ratio(r value)was tested by the tensile samples of three kinds of size.The experiment results showed that the r value descended when the gauge length was near to the parallel length.Its reason was that the strain in the tensile sample gauge length was non-uniform at that time. |
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| Keywords: | shape of specimen r value gauge length strain level |
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