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STUDY OF THE INFLUENCE FACTORS FOR QUALITY ASSURANCE OF DETERMINATION TESTS OF CHARGE DECAY TIME FOR ANTISTATIC TEXTILE MATERIALS

F. A. Paun, D. Grecea, L. Moldovan, D. Gabor, N. Vatavu
Thursday 11 October 2018 by Libadmin2018

ABSTRACT

The need to provide the highest level of protection in the industrial spaces with explosion danger led, on the one hand, to the development of new types of dissipative textile materials with protective role against static electricity and, on the other hand, to the development of test methods of these materials for the purpose of assessing compliance with the requirements specific to prevent the initiation of explosive atmospheres.
The assessment of the compliance of the dissipative textile materials used at the manufacture of garments with the safety requirements specific to the Ex., domain is based on the results obtained by testing them to determine characteristic parameters for protection against static hazardous electricity. The accuracy of the results obtained needed for the conformity assessment process depends on a number of factors such as the microclimate conditions (temperature, relative humidity) in which testing is carried out, but also the exactness of the application of the test method (s) by the personnel involved.
Therefore, the paper aims at identifying the influence factors regarding to assuring the quality of the tests for the determination of the charge decay time of textile materials in order to obtain the most accurate results.
Assurance of tests quality is a requirement imposed by the standard EN ISO/IEC 17025 for the accreditation of testing laboratories.

Keywords: charge decay time, antistatic textile materials, static electricity, tests quality assurance.


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