| Download | - View accepted manuscript: Engine oil condition monitoring using high temperature integrated ultrasonic transducers (PDF, 1.7 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1115/DETC2010-29232 |
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| Author | Search for: Kobayashi, M.1; Search for: Sun, Z.1; Search for: Jen, C.-K.1; Search for: Wu, K.-T.1; Search for: Bird, J.2; Search for: Galeote, B.2; Search for: Mrad, N.2 |
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| Affiliation | - National Research Council of Canada. NRC Industrial Materials Institute
- National Research Council of Canada. NRC Institute for Aerospace Research
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| Format | Text, Article |
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| Conference | ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE2010), 15–18 August 2010 , Montreal, Quebec, Canada |
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| Abstract | High temperature integrated ultrasonic transducers (IUTs) made of thick piezoelectric composite films have been coated directly onto the lubricant oil supply and sump lines of a modified CF700 turbojet engine. These thick piezoelectric films are fabricated using a sol-gel spray technology. The center frequencies of these IUTs are in the range of 10 to 12 MHz. The top electrodes, electrical wires, conducing adhesive bond, connectors and cables have been tested for temperatures up to 500°C. By operating these IUT in transmission mode, the amplitude and velocity of transmitted ultrasonic waves across the flow channel of the lubricant oil in supply and sump lines were mea sured during engine operation. The results have shown that the strength of the ultrasonic waves is sensitive to the presence of air bubbles in oil and the ultrasound velocity is linearly dependent on oil temperature. Based on the sensiti vity of ultrasound velocity to oil temperature, a method for real-time monitoring of engine oil degradation is proposed. |
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| Publication date | 2010-08-15 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 52472 |
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| NPARC number | 16898209 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 836434be-206b-4c4c-bcec-fc584c22a705 |
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| Record created | 2012-03-01 |
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| Record modified | 2020-04-17 |
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