Determination of porosity in small solid samples

Author

Matko, Vojko

Author_Institution

Fac. of Electr. Eng. & Comput. Sci., Maribor Univ., Slovenia

fYear

2003

fDate

8-8 Oct. 2003

Firstpage

472

Lastpage

477

Abstract

In response to a need for a more accurate porosity measuring method for small solid samples (approximately 1 g in mass) the porosity measurement sensor using a sensitive capacitive-dependent crystal was developed. This paper presents the new sensor and the probe sensitivity, frequency dependence on the volume. In addition, the new idea of excitation of the entire sensor with stochastic test signals is described, and the porosity measuring method is provided. The latter includes the influence of test signals on the weighting function uncertainty. The experimental results of the porosity determination in volcanic rock samples are presented. The uncertainty of the porosity measurement is less than 0.1% in the temperature range 10-30/spl deg/C.

Keywords

calibration; measurement errors; measurement uncertainty; porosity; porous materials; sensors; stochastic processes; 10 to 30 degC; calibration; measurement errors; measurement uncertainty; porosity determination; porosity measurement sensor; porosity measuring method; probe sensitivity; sensitive capacitive dependent crystal; solid samples; stochastic processes; stochastic test signals; volcanic rock samples; weighting function uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control. 2003 IEEE International Symposium on

Conference_Location

Houston, TX, USA

ISSN

2158-9860

Print_ISBN

0-7803-7891-1

Type

conf

DOI

10.1109/ISIC.2003.1254681

Filename

1254681