Abstract
Оцінка триботехнічних характеристик та сигналів акустичної емісії для пари тертя сталі 30ХГСА та дюралюмінію Д16, модифікованого сплавом ВК8
Highlights
Improving the quality, reliability, efficiency and performance of machinery, tools, equipment and other mechanical engineering products, reducing their relative material consumption and energy consumption are achieved first of all by the usage of materials and progressive strengthening technologies, which allow to increase strength, wear resistance, corrosion resistance and other physical and mechanical properties of machine and instrument parts
The results revealed a good correlation between the friction coefficient and acoustic emission rms voltage for dry sliding [3]
The investigation of contact surfaces was carried out according to the following scheme: in the friction pair D16+VK8 – 30HGSA the moving element was a sample of duraluminium D16, which surface was strengthened by the alloy BK8; in a friction pair 30HGSA – D16+VК8 a moving element was a model of steel 30HGSA
Summary
Many of experimental studies have been conducted to examine the relationship between the AE parameters and the wear resistance of the friction pairs. The paper [1] develops a theoretical model to correlate acoustic emissions to sliding friction based on elastic asperity contact of materials. Measurements of acoustic emission in severe sliding of metallic specimens were performed with a view to determining relationships between AE and wear-friction parameters [2]. The results revealed a good correlation between the friction coefficient and acoustic emission rms voltage for dry sliding [3] Such a relationship may allow the prediction of a reasonable friction coefficient μ from an AE signal. Based on an extensive experimental material, the technology of surface hardening of aluminum alloys through doping with laser heating has been developed: power 1,0 kW; processing speed 12.5 mm/s; doping thickness 0.3 mm. Determination of efficiency of application of AE method for research of processes of structural adaptability of contact surfaces with friction
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