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
conference contribution
posted on 2019-01-21, 12:17 authored by Ranveer S. Matharu, T. Hovell, Jon PetzingJon Petzing, Shreedhar Rangappa, Laura JusthamLaura Justham, Peter KinnellPeter KinnellFor 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 VCitation
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/10.1117/12.2307248Publisher
© SPIEVersion
- 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
2018-01-25Publication date
2018Notes
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
9781510618862ISSN
0277-786XeISSN
1996-756XPublisher version
Language
- en