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| 厚钢板CTOD试验中试样数量问题研究 | |
| 引用本文： | 冷树伟,苗张木,陈小娟,李小莉,高瑞岩.厚钢板CTOD试验中试样数量问题研究[J].船海工程,2011,40(6):49-51. |
| 作者姓名： | 冷树伟 苗张木 陈小娟 李小莉 高瑞岩 |
| 作者单位： | 1. 武汉理工大学交通学院,武汉,430063 2. 湖南华菱湘潭钢铁有限公司,湖南湘潭,411101 3. 秦皇岛首秦金属材料有限公司,河北秦皇岛,066326 |
| 摘 要： | 针对试样数量的选择的问题,按照CTOD韧性试验规范BS7448,对多批不同试样进行试验,并分析和对比试验结果.发现由于离散性的存在,按NS-EN 10225-2009与《材料与焊接规范》要求的传统取样数量并不能准确地判断材料的韧性.参考DNV-OS-C401关于焊接接头CTOD特征值的选择方法,讨论3种试样选取的方法.最后考虑多方面的因素,建议每次制备6个试验试样. |
| 关 键 词： | 厚钢板 CTOD试验 试样数量 韧性 离散性 |
Study on Quantity of Specimen in Thick Steel Plate CTOD Test |
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| Authors: | LENG Shu-wei MIAO Zhang-mu CHEN Xiao-juan LI Xiao-li GAO Rui-yan |
| Institution: | 1 School of Transportation,Wuhan University of Technology,Wuhan 430063,China; 2 Hunan Hualing Steel Company Ltd.,Xiangtan Hunan 411101,China; 3 Qinhuangdao Shouqin Metal Material Company Ltd.,Qinhuangdao Hebei 066326,China) |
| Abstract: | In order to study the effect of specimen quantity in the test,CTOD toughness tests were carried out for several batches of specimen based on the standard BS7448.Due to the existence of discreteness,it turned out that the ordinary selection method of specimen quantity based on standard NS-EN10225-2009 and standard of material and welding wasn’t able to determine the toughness of the materials exactly.Via the reference of standard DNV-OS-C401 about the quantity of specimen in the weld joints CTOD test,the Data was analyzed again.Through the test three new ways of how to select specimens are given.At last this paper gives an advice that the second method should be the best. |
| Keywords: | thick steel plate CTOD test quantity of specimen toughness discreteness |
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