Evaluation of Compacted Cementitious Composites for Porous Bearings |
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| Authors: | Tulio H. Panzera Andre L. Christoforo Juan C. Campos Rubio Christopher R. Bowen Paulo H. Ribeiro Borges Leandro J. Silva |
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| Affiliation: | 1. Department of Mechanical Engineering, Federal University of S?o Jo?o del Rei – UFSJ, , S?o Jo?o del Rei, Brazil;2. Department of Mechanical Engineering, Federal University of Minas Gerais – UFMG, , Belo Horizonte, Brazil;3. Department of Mechanical Engineering, Materials Research Centre, University of Bath, , Bath, UK;4. Department of Civil Engineering, Federal Centre of Technology Education of Minas Gerais – CEFET/MG, , Belo Horizonte, Brazil;5. Department of Production Engineering, Federal University of Minas Gerais – UFMG, , Belo Horizonte, Brazil |
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| Abstract: | The use of porous materials as a restrictor in aerostatic bearings provides many advantages over conventional restrictors, such as small variation of temperature, high damping, high operational speeds, limited wear, and capacity to support radial, axial, and combined loading. A design of experiment (DOE) was carried out to evaluate cold‐pressed cementitious composites as an air restrictor in thrust bearings. The physical and mechanical properties such as the apparent porosity, permeability, and elastic modulus were investigated in this work, thus verifying the structural and flow characteristics of the composites for such application. The composites fabricated with low compacting pressure and small silica particles provided the material requirements for porous bearings. |
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