| Journal: | Journal of the Brazilian Society of Mechanical Sciences |
| Database: | PERIÓDICA |
| System number: | 000312087 |
| ISSN: | 0100-7386 |
| Authors: | Higuti, Ricardo Tokio1 Furukawa, Celso Massatoshi2 Adamowski, Julio Cezar |
| Institutions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Engenharia Eletrica, Ilha Solteira, Sao Paulo. Brasil 2Universidade de Sao Paulo, Departamento de Engenharia Mecatronica e Sistemas Mecanicos, Sao Paulo. Brasil |
| Year: | 2001 |
| Volumen: | 23 |
| Number: | 4 |
| Pages: | 453-461 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Aplicado |
| English abstract | This paper presents an ultrasonic method to measure small concentrations of water in lubricating oil. It uses an ultrasonic measurement cell composed by a piezoceramic emitter (5 and 10 MHz), and a large aperture PVDF receiver that eliminates diffraction effects. The propagation velocity, attenuation coefficient and density of several samples of water-in-oil emulsion were measured. The concentrations of water of the samples were in the range of 0 to 5% in volume, and the results showed that these low concentrations can be discriminated within a resolution of 0.2% in the studied range, using the measurement of the propagation velocity |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería de instrumentos, Ingeniería de materiales, Aceites, Aceites lubricantes, Caracterización, Ultrasonido |
| Keyword: | Engineering, Instrumentation engineering, Materials engineering, Oil, Lubricant oils, Characterization, Ultrasound |
| Full text: | Texto completo (Ver HTML) |
