理化检验-物理分册2017，Vol.53Issue(12)：885-888,893,5.DOI:10.11973/lhjy-wl201712008
烧结金属材料开孔率测定的不确定度评定
Measurement Uncertainty Evaluation on Porosity Rate ofSintered Metal Materials
程柄午 1吴嘉杰 1黄旭东 1许鹤君1
作者信息
- 1. 上海材料研究所 上海市工程材料应用与评价重点实验室,上海 200437
- 折叠
摘要
Abstract
The uncertainty sources in measurement of porosity rate of sintered metal materials were analyzed, and the uncertainty of the measurement results was evaluated.The results show that the uncertainty sources in measurement of porosity rate of the sintered metal materials mainly come from weighing sample's mass in air, sample's mass in water with water completely be soaked in and sample's mass in air with water completely be soaked in,data rounding and so on.The uncertainty report of measuring porosity rate of a sintered metal rotor bush was as following:K=26.4%,U=0.2%,k=2 (K being the porosity rate,U being the extended uncertainty,and k being the coverage factor).关键词
烧结金属材料/开孔率/不确定度评定Key words
sintered metal material/porosity rate/uncertainty evaluation分类
矿业与冶金引用本文复制引用
程柄午,吴嘉杰,黄旭东,许鹤君..烧结金属材料开孔率测定的不确定度评定[J].理化检验-物理分册,2017,53(12):885-888,893,5.
