Site surface conditions effects on the static friction coefficient for metallic materials
DOI:
https://doi.org/10.7764/RIC.00069.21Keywords:
Metallic materials, friction coefficient, site conditions, corrosion, hardness ratioAbstract
A methodology for quantifying the variation of the static friction coefficient µ due to different site surface conditions, and for metallic materials with hardness ratios ρ = 0.5 – 2, is proposed. ρ is defined as the ratio between the material hardness and the A36 steel hardness. For each material, 7 coupons were considered in the site conditions “clean”, “bought”, “polished” and “corroded”. Results show if surfaces are kept as “bought”, µ may increase or decrease up to 20%, if surfaces are polished, µ may increases up to 37%, and if surfaces are corroded µ may increases up to 410% when considering corrosion rates of 90 – 670 µm/year. These increments or reductions were calculated respect to the site condition “clean”. Results also show for “clean” surfaces and for ρ ≤ 1.7, µ is dependent on ρ, for ρ > 1.7, µ is approximately constant. A model for quantifying variations of µ for the considered site surface conditions was proposed.
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Copyright (c) 2023 José Christian Chanchi Golondrino, Brayanath Moreno Castañeda, Mateo Restrepo Botero
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.