In-situ fibre-based surface profile measurement system using low coherence interferometer.pdf (478.29 kB)

In-situ fiber-based surface profile measurement system using low coherence interferometer

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conference contribution
posted on 21.01.2019, 12:17 by Ranveer S. Matharu, T. Hovell, Jon Petzing, Shreedhar Rangappa, Laura Justham, Peter Kinnell
For many high-value manufacturing applications, advanced control systems are required to ensure product quality is maintained; this requires accurate data to be collected from in-situ sensors. Making accurate in-situ measurements is challenging due to the aggressive environments found within manufacturing machines and processes. This paper investigates a method to obtain surface profile measurements in a spectral-domain, common-path, low-coherence system. A fibre based Low Coherence Interferometer was built and was used to experimentally measure surface profiles. The fringes obtained from interferograms were transformed into the Fourier domain to obtain a trackable peak relating to the surface depth. This has been illustrated with ideal step height measurements and referenced specimens as well as more challenging surface roughness measurements, which have produced complex signal processing issues. This work opens up avenues for a metrology based system where both machining and measurement system can coexist on the same plane, in aggressive environments.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Optical Sensing and Detection Optical Sensing and Detection V

Citation

MATHARU, R.S. ... et al., 2018. In-situ fiber-based surface profile measurement system using low coherence interferometer. Proceedings Volume 10680, Optical Sensing and Detection V; 106801D (2018) https://doi.org/10.1117/12.2307248

Publisher

© SPIE

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

25/01/2018

Publication date

2018

Notes

One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

ISBN

9781510618862

ISSN

0277-786X

eISSN

1996-756X

Language

en

Location

Strasbourg, France

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