Uncertainty Evaluation of Tensile Experiment of Welded Joint Based on the Method of GUM

Abstract

The paper is based on the method of GUM. In this paper, according to the mathematic model of tensile strength, lower yield strength and elongation after break, we analyzed the uncertainty. In the process of analysis, the experimental process is optimized, and the sensitivity coefficient is introduced, which can quantify the contribution degree of each input to the uncertainty. The uncertainty assessment work is more in-depth and more accurate