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  • Porosity determination by using two stochastic signals
    Matko, Vojko
    Om 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. 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).
    Source: Sensors and actuators. A, Physical. - ISSN 0924-4247 (Vol. 112, 2004, str. 320-327)
    Type of material - article, component part
    Publish date - 2004
    Language - english
    COBISS.SI-ID - 9078038