硅砖显气孔率测量结果的不确定度分析与评定

Analysis and Evaluation on Measurement Uncertainty of Apparent Porosity of Silica Refractory Bricks

摘要: 按照GB/T 2997-2000测量并计算了同一批次硅砖试样的显气孔率, 对影响显气孔率的测量不确定度分量进行了分析和评定, 并对测量不确定度的各个分量进行了计算和合成, 给出了该硅砖显气孔率的不确定度报告为: 显气孔率πa=20.2%, 测量结果的扩展不确定度U=0.2%, 包含因子k=2。

Abstract: According to GB/T 2997-2000, the apparent porosity of silica refractory bricks were measured and calculated. The measurement uncertainty component which affecting apparent porosity measurement was analyzed and evaluated. The various components of the measurement uncertainty were computed and synthetic, finally, the measurement uncertainty results of apparent porosity of silica refractory bricks were: πa=20.2%, U=0.2%, k=2.