DETERMINING THE SAMPLE SIZE REQUIRED FOR THE MATERIALS QUALITY ANALYSIS IN FORM OF SHEET USING IMAGE ANALYSIS

STEFAN ABABEI, OANA ABABEI

Abstract

On-line control of great dimensions sheet form products, e.g. paper sheet, involves the existence of some sensors which are moved across the sheet. Consequently, some parameters, e.g. impurities amount on surface unit, must be measured off line with a representative sample; the dimensions of the sample are surfaces impurities amount functions. This paper presents a preliminary analysis method of surface impurities amount in the purpose of determining the sample dimensions.

Keywords

image analysis, impurities amount, sample dimensions

References

Ababei, Şt., Determinarea mărimii eşantionului necesar estimării cu precizie impusă a impurităţilor de suprafaţă din materialele electroizolante celulozice. SIELMEC 99, Chişinău, 1999, p. 101-106.

Jesus, J., Sampling error in measurement of dirt in pulp and paper. TAPPI Journal, vol. 79, no. 5, 1996, p. 222-229.

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