Low coherence interferometric fibre based in-situ measurements of surface roughness in air and in water

Tom Hovell, Ranveer S. Matharu, Jon Petzing, Laura Justham, Peter Kinnell

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Abstract

In many high-value manufacturing applications there is increased demand for component surfaces with enhanced geometric complexity. In order to ensure accurate adherence to design specifications and to compensate for any deviations, an in-situ measurement system capable of providing feedback on surface geometry within reasonable range is an important tool for manufacturing processes. While there have been many sensing techniques used for monitoring the manufacturing process, many of these are limited in terms of their ability to provide accurate reliable real-time measurements, are off-line systems, or are inappropriate for the hostile machining environment. In this work, a fibre based common path low-coherence interferometric technique has been successfully developed to measure surface step heights and surface roughness, in air, but more importantly in water. Results are produced from slip gauge sets and reference roughness comparator standards, demonstrating the ability to achieve close to nominal value agreement in air, but water based step height and surface roughness Ra values depart further from nominal as a function of media refractive index and dispersion characteristics.

Original languageEnglish
Title of host publicationProceedings of the 18th International Conference of the European Society for Precision Engineering and Nanotechnology
EditorsO. Riemer, Enrico Savio, D. Billington, R. K. Leach, D. Phillips
Publishereuspen
Pages507-508
Number of pages2
ISBN (Print)9780995775121
Publication statusPublished - 1 Jan 2018
Externally publishedYes
Event18th International Conference of the European Society for Precision Engineering and Nanotechnology - Venice, Italy
Duration: 4 Jun 20188 Jun 2018

Conference

Conference18th International Conference of the European Society for Precision Engineering and Nanotechnology
Abbreviated titleEUSPEN 2018
CountryItaly
CityVenice
Period4/06/188/06/18

Keywords

  • Low-coherence interferometry
  • Metrology
  • Surface roughness

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Instrumentation
  • Environmental Engineering
  • Mechanical Engineering
  • Materials Science(all)

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  • Cite this

    Hovell, T., Matharu, R. S., Petzing, J., Justham, L., & Kinnell, P. (2018). Low coherence interferometric fibre based in-situ measurements of surface roughness in air and in water. In O. Riemer, E. Savio, D. Billington, R. K. Leach, & D. Phillips (Eds.), Proceedings of the 18th International Conference of the European Society for Precision Engineering and Nanotechnology (pp. 507-508). euspen.