Research

Microstructural design of materials for aerostatic bearings


Reference:

Panzera, T. H., Rubio, J. C., Bowen, C. R. and Walker, P. J., 2008. Microstructural design of materials for aerostatic bearings. Cement & Concrete Composites, 30 (7), pp. 649-660.

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Official URL:

http://dx.doi.org/10.1016/j.cemconcomp.2007.08.013

Abstract

The aim of this work is to investigate the development of a high strength porous cementitious composite manufactured via cold-pressed compaction for use as the restrictor in aerostatic bearings for high precision applications since they provide a number of advantages over conventional orifice restrictors. The selection of suitable materials and microstructural design of composites phases is essential to the development of material for optimum stiffness, strength, porosity and permeability. A variety of high purity (99.98% SiO2) silica particle types was mixed with ordinary Portland cement to produce the composite mixtures. A full factorial design (2241) was carried out to study the effects of silica properties (size and geometry) and uniaxial pressures (10 MPa and 30 MPa) on mechanical properties and microstructure of the ceramic composites. The cementitious composite manufactured using small silica particles, non-spherical shape and low level of compaction pressure exhibited the most appropriate properties for the stated application of porous bearings.

Details

Item Type Articles
CreatorsPanzera, T. H., Rubio, J. C., Bowen, C. R. and Walker, P. J.
DOI10.1016/j.cemconcomp.2007.08.013
Uncontrolled Keywordsfull factorial design, porous bearing, cementitious composite
DepartmentsFaculty of Engineering & Design > Mechanical Engineering
Faculty of Engineering & Design > Architecture & Civil Engineering
Research CentresCentre for Advanced Sensor Technologies (CAST)
Materials Research Centre
BRE Centre in Innovative Construction Materials
RefereedYes
StatusPublished
ID Code13135

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