Design of a fluorescent measurementsystem for compliant hydrostaticbearings

Master thesis (2020)

Authors

S.J. Siers Mechanical Engineering

Contributors

J.P.A. Nijssen Mechatronic Systems Design - Mechanical, Maritime and Materials Engineering (mentor)
R.A.J. van Ostayen Mechatronic Systems Design - Mechanical, Maritime and Materials Engineering (graduation committee member)
Faculty
Mechanical Engineering, Mechanical Engineering
Copyright: © 2020 Sebas Siers
More Info
expand_more

Published Date

15-09-2020

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Mechanical Engineering

Abstract

A LED induced fluorescent technique based test setup is introduced , which is used to measure the water film thickness of compliant hydrostatic bearings. Fluorescent particles have the characteristic of absorbing light of a certain wavelength and emitting light of a higher wavelength. A LED with a wavelength of 540 nm (green light) is used to excite the Rhodamine B fluorescent particles, which have a excitation wavelength of 545 nm. The emission wavelength of the particles is 570 nm (red light) and this colour shift is captured by a RGB colour camera where the red and green channels have been used as an optical filter. The increase of intensity due to the excitation of the thin film can be coupled to the thickness of the film. The performance of the technique is validated by comparing the film height to a laser sensor measured film height for a rigid bearing containing features with known dimensions. A film thickness measurement technique is presented that is able to measure 15-1400 $\mu$m and an average accuracy of 6.4\% is achieved.

Files

Thesis_5_.pdf
(.pdf | 173 Mb)
- Embargo expired in 20-05-2021