| 2A70铝合金搅拌摩擦焊接头抗拉强度测定结果的不确定度评定 |
| |
| 引用本文： | 燕翔,张振字,乔凤林.2A70铝合金搅拌摩擦焊接头抗拉强度测定结果的不确定度评定[J].理化检验(物理分册),2011(6):361-364. |
| |
| 作者姓名： | 燕翔 张振字 乔凤林 |
| |
| 作者单位： | 中国三江航天集团红阳机械厂; |
| |
| 摘 要： | 依照GB/T 2651—2008《焊接接头拉伸试验方法》对2A70铝合金搅拌摩擦焊T型接头的抗拉强度进行了测定,并对抗拉强度测定结果的不确定度进行了评定。结果表明:当置信度取95%,包含因子取2,该接头抗拉强度测定结果的扩展不确定度为14Mpa,相对扩展不确定度为3.8%;不确定报告可表示为R_m=(370±14)MPa,v=81,k=2。
|
| 关 键 词： | 2A70铝合金 搅拌摩擦焊 T型接头 抗拉强度 不确定度评定 |
Uncertainty Evaluation on Testing Results of Tensile Strength of Friction Stir Welding Joints of 2A70 Aluminium Alloy |
| |
| YAN Xiang,ZHANG Zhen-yu,QIAO Feng-lin.Uncertainty Evaluation on Testing Results of Tensile Strength of Friction Stir Welding Joints of 2A70 Aluminium Alloy[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2011(6):361-364. |
| |
| Authors: | YAN Xiang ZHANG Zhen-yu QIAO Feng-lin |
| |
| Affiliation: | YAN Xiang,ZHANG Zhen-yu,QIAO Feng-lin (Red Sun Factory of Sanjiang Space Groupe,Xiaogan 432000,China) |
| |
| Abstract: | The tensile strength of friction stir welding T-joints of 2A70 aluminium alloy was tested according to GB/T 2651--2008 ＂Method of Tensile Test for Welded Joint＂, and uncertainty of the tensile strength testing results was evaluated. The results show that the expanded uncertainty and relative expanded uncertainty of tensile strength of the T-joints were 14 MPa and 3. 8% respectively, when the confidence level was 95% and coverage factor was 2. Therefore, the uncertainty report can be expressed as follow： Rm= （370± 14） MPa, v=81, k=2. |
| |
| Keywords: | 2A70 aluminum alloy friction stir welding T-joint tensile strength uncertainty evaluation |
| 本文献已被 CNKI 维普 等数据库收录！ |
