Application of 3-D topography to bio-engineering

Kenneth J. Stout, Liam A. Blunt

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Traditionally, quantitative measurement of surface texture has been carried out using contacting stylus instruments yielding purely 2-dimensional topographical information. Recently, there has been a great expansion in this field through developments in instrumentation and computers which now make 3-dimensional surface measurement a routine procedure. The latest instruments measure roughness ranges from nanometers up to millimetres. In conjunction with the development of these new techniques a new range of numerical parameters are currently being developed in an attempt to establish a basis for new international 3-dimensional surface measurement standards avoiding the "parameter rash" problems encountered in the development of 2-dimensional surface measurement. Primarily the new measurement techniques can be divided into contact (employing styli) or non-contact measurement (employing mostly interferometers or focus detection systems) regimes. Despite the commercial availability of many of these new systems they all possess certain important drawbacks as far as their wide applicability is concerned. True quantitative 3D surface measurement has meant that the field of applications of these techniques. has expanded enormously, from the traditional 2-dimensional area of quality monitoring of machined surfaces into 3-dimensional measurement fields ranging from ultra-fine thin film measurement to dermatological cancer studies. A relatively new and developing field of application of 3D analysis is that of bio-engineering where the surface topography is of extreme importance in areas such as joint prosthesis surfaces replacement heart valve seal quality and contact lens quality. The present study presents a review of a number of the new measuring systems available and their associated numerical characterisation methods. A number of bio-engineered surfaces are given as examples covering four decades of vertical measurement range in order to illustrate the data sampling techniques, measurement strategies, range to resolution and instrument selection issues.

LanguageEnglish
Pages219-229
Number of pages11
JournalInternational Journal of Machine Tools and Manufacture
Volume35
Issue number2
DOIs
Publication statusPublished - Feb 1995
Externally publishedYes

Fingerprint

Topography
Surface measurement
Joint prostheses
Contact lenses
Surface topography
Bioengineering
Interferometers
Seals
Textures
Surface roughness
Availability
Sampling
Thin films
Monitoring

Cite this

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Application of 3-D topography to bio-engineering. / Stout, Kenneth J.; Blunt, Liam A.

In: International Journal of Machine Tools and Manufacture, Vol. 35, No. 2, 02.1995, p. 219-229.

Research output: Contribution to journalArticle

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