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A comparison of ultrasonically activated water stream and ultrasonic bath immersion cleaning of railhead leaf-film contaminant

A comparison of ultrasonically activated water stream and ultrasonic bath immersion cleaning of railhead leaf-film contaminant
A comparison of ultrasonically activated water stream and ultrasonic bath immersion cleaning of railhead leaf-film contaminant
Leaf-film adhered to the railway track is a major issue during the autumn/fall season, as leaves fall onto the track and are entrained into the wheel-rail interface. This results in the development of a smooth, black layer. Presently, pressure washers must be used to clean the residue to prevent loss of traction, which can cause crashes or delays by forcing a reduced speed. These pressure washers consume large amounts of water and energy. In this study, use of an ultrasonic cleaning apparatus equipped with a 100 W transducer is investigated, using a low volume of water in the order of 1 L min-1. This was applied to leaf-film samples generated in the laboratory, whose surface properties and thickness were confirmed with optical and stylus profilometry methods. Cleaning achieved by an ultrasonically activated water stream was compared to a) non-activated water and b) an ultrasonic bath with comparable power consumption. Cleaning efficacy was found to be much greater than that afforded by the ultrasonic bath; a rate of 14.3 mm2 s-1 compared to 0.37 mm2 s-1, and the ultrasonic bath only cleaned off around 20% of the leaf-film coverage even after 3 minutes of exposure.
1-10
Goodes, Liam
83fd1cdf-8fba-4089-9094-971f6460f5ef
Harvey, Terence
3b94322b-18da-4de8-b1af-56d202677e04
Symonds, Nicola
cc8585b0-89f5-471c-84fd-969176516829
Leighton, Timothy
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Goodes, Liam
83fd1cdf-8fba-4089-9094-971f6460f5ef
Harvey, Terence
3b94322b-18da-4de8-b1af-56d202677e04
Symonds, Nicola
cc8585b0-89f5-471c-84fd-969176516829
Leighton, Timothy
3e5262ce-1d7d-42eb-b013-fcc5c286bbae

Goodes, Liam, Harvey, Terence, Symonds, Nicola and Leighton, Timothy (2016) A comparison of ultrasonically activated water stream and ultrasonic bath immersion cleaning of railhead leaf-film contaminant. Surface Topography: Metrology and Properties, 4 (3), 1-10. (doi:10.1088/2051-672X/4/3/034003).

Record type: Article

Abstract

Leaf-film adhered to the railway track is a major issue during the autumn/fall season, as leaves fall onto the track and are entrained into the wheel-rail interface. This results in the development of a smooth, black layer. Presently, pressure washers must be used to clean the residue to prevent loss of traction, which can cause crashes or delays by forcing a reduced speed. These pressure washers consume large amounts of water and energy. In this study, use of an ultrasonic cleaning apparatus equipped with a 100 W transducer is investigated, using a low volume of water in the order of 1 L min-1. This was applied to leaf-film samples generated in the laboratory, whose surface properties and thickness were confirmed with optical and stylus profilometry methods. Cleaning achieved by an ultrasonically activated water stream was compared to a) non-activated water and b) an ultrasonic bath with comparable power consumption. Cleaning efficacy was found to be much greater than that afforded by the ultrasonic bath; a rate of 14.3 mm2 s-1 compared to 0.37 mm2 s-1, and the ultrasonic bath only cleaned off around 20% of the leaf-film coverage even after 3 minutes of exposure.

Text __soton.ac.uk_ude_PersonalFiles_Users_cc1n12_mydocuments_PROF LEIGHTON_Article pdfs_Goodes L R, Harvey T J, Symonds N, Leighton T G (2016) A comparison of ultrasonically activated water stream ....pdf - Accepted Manuscript
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More information

Accepted/In Press date: 2 June 2016
e-pub ahead of print date: 4 July 2016
Published date: 5 July 2016
Organisations: Acoustics Group, nCATS Group

Identifiers

Local EPrints ID: 394497
URI: https://eprints.soton.ac.uk/id/eprint/394497
PURE UUID: c7e7aea5-4d74-4fc0-8bb3-126cf7ae7f0f
ORCID for Timothy Leighton: ORCID iD orcid.org/0000-0002-1649-8750

Catalogue record

Date deposited: 06 Jun 2016 10:31
Last modified: 06 Jun 2018 13:08

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