| 一种单试样测定J积分阻力曲线的新方法 |
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| 引用本文： | 孟晓梅,乔及森,马杭.一种单试样测定J积分阻力曲线的新方法[J].兰州理工大学学报,1999,25(4):3. |
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| 作者姓名： | 孟晓梅 乔及森 马杭 |
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| 作者单位： | 甘肃工业大学,材料工程系,甘肃,兰州,730050 |
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| 基金项目： | 甘肃省自然科学基金!（ZR－97－037） |
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| 摘 要： | 在单试样三曲线法及卸载柔度法基础上，提出了一种新的简便的单试样测定金属材料Ｊ积分阻力曲线及条件起裂值的方法和步骤．并用该方法测定了１Ｃｒ１／２Ｍｏ 钢、１６ＭｎＲ钢和ＷＣＦ６２ 钢的Ｊ积分阻力曲线及条件起裂值，与标准的多试样法相比，误差均在工程许可范围内．
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| 关 键 词： | 断裂韧度 J积分 阻力曲线 单试样 扩展曲线 柔度 |
| 修稿时间： | 1999-08-3 |
A new method for measuring J-resistence curves of metallic materials from single specimen |
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| MENG Xiao-mei,QIAO Ji-sen,Ma Hang.A new method for measuring J-resistence curves of metallic materials from single specimen[J].Journal of Lanzhou University of Technology,1999,25(4):3. |
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| Authors: | MENG Xiao-mei QIAO Ji-sen Ma Hang |
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| Abstract: | Based on the method of three curves and the method of unloading compliance, a simple new method is proposed for measuring J resistence curves of metallic materials. The measurement of J resistence curves and their proof values at crack initiations were carried out using 1Cr1/2Mo,16MnR and WCF62 steels. The results of the single specimen are in agreement with those of the standard multi specimen method. The errors are within the allowable range in engineering. |
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| Keywords: | fracture toughness J integral resistence curve single specimen extension curve compliance |
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