| 吴福麒,李子然,董毅,夏源明*.一种聚酯帘线单向拉伸试验的新方法[J].实验力学,2009,24(3):191~196 |
| 一种聚酯帘线单向拉伸试验的新方法 |
| A New Method for Uniaxial Tension Test of Polyester Cord |
| 投稿时间：2009-01-07 修订日期：2009-06-10 |
| DOI： |
| 中文关键词: 聚酯帘线 拉伸模量 减法试验法 端部效应 |
| 英文关键词:polyester cord tensile modulus Minus-Test method end-effect |
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| 摘要点击次数: 168 |
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| 中文摘要: |
| 提出了一种适合聚酯帘线单向拉伸试验的新方法（简称减法试验法）。该方法首先进行不同长度试件的单向拉伸试验；然后对获得的任意两个差别较大的载荷-位移曲线实施位移减法，从而得到消除了端部效应的新的载荷-位移曲线（其对应试件的长度为原两试件长度之差）；进而得到相关的力学参数。本文的试验和相关分析表明，直接的单向拉伸试验存在明显的端部效应，必须予以消除，且在同一载荷下端部效应与试件的长度无关；同时又表明本文所提出的减法试验法是有效的，能够获得聚酯帘线较真实可靠的应力应变曲线和相关力学参数。 |
| 英文摘要: |
| A new method for uniaxial tension test of polyester cord, named Minus-Test method, is presented in this paper. Firstly, uniaxial tension tests for specimens with different lengths were performed. Then subtractions between any two of the obtained load-displacement curves were carried out and new load-displacement curves in which the end-effect had been eliminated were obtained. The corresponding specimen’s length for the new curve equates to the difference of the two original specimens’ lengths. Finally, relevant mechanical parameters were acquired. The tests and analysis in this paper indicate that obvious end-effect which should be eliminated indeed exists in the direct uniaxial tension test and is independent of the specimen’s length at the same load. The Minus-Test method presented here is effective and is able to obtain more reliable stress-strain curves and relevant mechanical parameters of polyester cord. |
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