Articles | Volume 13, issue 1
https://doi.org/10.5194/jsss-13-9-2024
https://doi.org/10.5194/jsss-13-9-2024
Regular research article
 | 
14 Feb 2024
Regular research article |  | 14 Feb 2024

Laboratory robustness validation of a humidity sensor system for the condition monitoring of grease-lubricated components for railway applications

Krisztián Dubek, Christoph Schneidhofer, Nicole Dörr, and Ulrich Schmid

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Cited articles

Ametek Brookfield: Moisture in Oils: The Three-Headed Beast, https://www.brookfieldengineering.com/blogs/2015/april/moisture-in-oils-the-three-headed-beast (last access: 31 July 2023), 2015. 
Ametek Brookfield: Computrac Vapor Pro XL Moisture Analyzer, https://www.brookfieldengineering.com/-/media/ametekbrookfield/azic/productsdownloads/moisture-testers/computrac-vapor-pro-xl/700-0133-c_manual-vapor-pro-xl.pdf?la=en&revision=9c2371c7-31f3-4c88-8088-4146dccd3ac6 (last access: 31 July 2023), 2018. 
ASTM: D1744-13: Standard Test Method for Determination of Water in Liquid Petroleum Products by Karl Fischer Reagent, ASTM International, Philadelphia, United States, https://doi.org/10.1520/D1744-13, 2016a. 
ASTM: D7546-15: Standard Test Method for Determination of Moisture in New and In-Service Lubricating Oils and Additives by Relative Humidity Sensor, ASTM International, Philadelphia, United States, https://doi.org/10.1520/D7546-09, 2016b. 
ASTM: D217-21: Standard Test Methods for Cone Penetration of Lubricating Grease, ASTM International, Philadelphia, United States, https://doi.org/10.1520/D0217-21A, 2021a. 
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Short summary
A new method for water detection in lubricated rail components is presented. It is based on a robust humidity sensor combined with robust data evaluation to determine the water content of greases. Based on a laboratory evaluation in the relevant environment, the presented approach offers an online monitoring tool to predict the water content of grease-lubricated rail parts, thereby enhancing the reliability and safety while reducing the maintenance costs and downtime of railway wagons.