Estimation of Vickers hardness uncertainty for a heterogeneous welded joint (S235JR+AR and X2CrNiMo17-12-2)

5th ModTech International Conference - Modern Technologies in Industrial Engineering

Dijmrescu, M.C.^1 ; Dijmrescu, M.R.^2

University POLITEHNICA of Bucharest, Materials Technology and Welding Department, 313 Splaiul Independentei, Bucharest

060042, Romania^1

University POLITEHNICA of Bucharest, Manufacturing Engineering Department, 313 Splaiul Independentei, Bucharest

060042, Romania^2

关键词: Essential elements;    Heterogeneous welded joint;    Physical experiments;    Quality assessment;    Technological system;    Uncertainty of measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/227/1/012035/pdf
DOI  :  10.1088/1757-899X/227/1/012035

来源: IOP

【 摘 要 】

When talking about tests that include measurements, the uncertainty of measurement is an essential element because it is important to know the limits within the obtained results may be assumed to lie and the influence the measurement technological system elements have on these results. The research presented in this paper focuses on the estimation of the Vickers hardness uncertainty of measurement for the heterogeneous welded joint between S235JR+AR and X2CrNiMo17-12-2 materials in order to establish the results relevance and the quality assessment of this joint. The paper contents are structured in three main parts. In the first part, the initial data necessary for the experiment is presented in terms of the welded joint and technological means characterisation. The second part presents the physical experiment development and its results and in the third part the uncertainty of the measurements is calculated and a results discussion is undertaken.