Characterization of Lubricating Oil Using Ultrasound


Autoria(s): Higuti,Ricardo Tokio; Furukawa,Celso Massatoshi; Adamowski,Julio Cezar
Data(s)

01/01/2001

Resumo

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.

Formato

text/html

Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-73862001000400006

Idioma(s)

en

Publicador

The Brazilian Society of Mechanical Sciences

Fonte

Journal of the Brazilian Society of Mechanical Sciences v.23 n.4 2001

Palavras-Chave #Ultrasound #liquid characterization #lubricating oil
Tipo

journal article