Original scientific paper

Porosity Determination by Using Stochastics Method

Vojko Matko

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 the sensitive capacitive-dependent crystal was developed. This paper presents the new sensor and the probe sensitivity (dependence of d f 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 % (Temp = 10–30 °C).

Keywords

porosity; volcanic rock; capacitive-dependent crystal; stochastics method

Hrčak ID:

6775

URI

https://hrcak.srce.hr/6775

Publication date:

29.12.2003.

Article data in other languages: croatian

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