Chemical Contamination Sensor for Phosphate Ester Hydraulic Fluids
Joint Authors
Müller, Gerhard
Paul, Sumit
Legner, Wolfgang
Krenkow, Angelika
Pradat, Francois
Hertens, Delphine
Lemettais, Thierry
Source
International Journal of Aerospace Engineering
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-06-29
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
The paper deals with chemical contamination monitoring in phosphate-ester-based hydraulic fluids using nondispersive infrared (NDIR) optical absorption.
Our results show that NDIR monitoring allows detecting the take-up of water into such fluids and their hydrolytic disintegration as these become additionally stressed by Joule heating.
Observations on the O–H stretching vibration band (3200–3800 cm−1) are used for determining the free water content (0–1.5%) and the Total Acid Number (0–1 mgKOH/g).
Both quantities can be assessed by monitoring the strength and the asymmetry of the O–H vibration band with regard to the free water absorption band centred around 3500 cm−1.
As such optical parameters can be assessed without taking fluid samples from a pressurised hydraulic system, fluid degradation trends can be established based on regular measurements, before irreversible damage to the fluid has occurred.
Therefore maintenance actions can be planned accordingly, which is very important for the airline, as unscheduled maintenance disturbs the flights organisation and often generates money loss.
American Psychological Association (APA)
Paul, Sumit& Legner, Wolfgang& Krenkow, Angelika& Müller, Gerhard& Lemettais, Thierry& Pradat, Francois…[et al.]. 2010. Chemical Contamination Sensor for Phosphate Ester Hydraulic Fluids. International Journal of Aerospace Engineering،Vol. 2010, no. 2010, pp.1-9.
https://search.emarefa.net/detail/BIM-450256
Modern Language Association (MLA)
Paul, Sumit…[et al.]. Chemical Contamination Sensor for Phosphate Ester Hydraulic Fluids. International Journal of Aerospace Engineering No. 2010 (2010), pp.1-9.
https://search.emarefa.net/detail/BIM-450256
American Medical Association (AMA)
Paul, Sumit& Legner, Wolfgang& Krenkow, Angelika& Müller, Gerhard& Lemettais, Thierry& Pradat, Francois…[et al.]. Chemical Contamination Sensor for Phosphate Ester Hydraulic Fluids. International Journal of Aerospace Engineering. 2010. Vol. 2010, no. 2010, pp.1-9.
https://search.emarefa.net/detail/BIM-450256
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-450256