TITLE:
Evaluation of Geometric Quality of Weld Beads in the Joining of Carbon Steel Pipelines with Single Pass
AUTHORS:
José Eduardo Silveira Leal, Thonson Ferreira Costa, Rosenda Valdés Arencibia
KEYWORDS:
Welding; Weld Bead Geometry; Profile Projector; Uncertainty
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.1 No.7,
November
28,
2013
ABSTRACT: This work presents the uncertainty
evaluation associated with the measurement of linear parameters that define the
weld geometry, specifically the width, using a profile projector, in order to
meet the current technical standards. The following steps were proposed and
implemented: identification of linear parameters that define the weld geometry;
identification and study of variables that affect the measurement of these parameters;
the adoption of the mathematical model to estimate the uncertainty; planning and
execution of experiments for data collection, calculation of uncertainty and, finally,
analysis and discussion of the results. Through the results analysis it was concluded
that the weld in overhead
position produces the lowest front bead width values and the vertical weld produces
the largest width values. The expanded uncertainty
values were between 0.016
mm and 0.075 mm for all measurements, and the overhead position showed, on
average, the highest values.