OPTIMALIZATION OF EVALUATION OF INITIATION OF TEMPERATURE AGEING PROCESSES OF SELECTED CABLE ISOLATION

1 ŠTĚPÁNOVÁ Lucie
Co-authors:
1 ŠTĚPÁNEK Ivo 1 MERTOVÁ Andrea 1 ŠIMEČKOVÁ Lucie
Institution:
1 Institute of Thermomechanics CAS, v.v.i., Czech Republic, EU, stepanova@it.cas.cz
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1003-1009
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
12 views / 1 download
Abstract

The paper is devoted of verification of possibilities of evaluation of initial changing of properties and behaviour of selected polymeric isolation of cables after defined temperature loading simulated of external operational conditions and simulated temperature loading evoked by current loading. There are evaluated initial properties and behaviour of selected polymeric cable isolations and properties and behaviour after natural ageing process and controlled accelerated ageing process during higher temperature loading and different time of exposition to the higher temperature. The method of x-ray fluorescence analysis is used for evaluation of differences of changing of properties and behaviour of polymeric isolation cable materials after natural ageing process and after accelerated controlled ageing processes. There are verificated the possibilities for analysis differences in behaviour of polymeric insulation materials after different ageing process. The paper is namely devoted by verification of the possibilities analytic methods for evaluation initial of changing of properties and behaviour by nanoindentation methods for analysis very small differences in mechanical properties and behaviour of surface layers of polymeric materials used in the application isolation of cables. There are optimized the parameters of nanoindentation measurements for analysis of differences in hardness and elastic plastic behaviour.

Keywords: nanoindentation, scratch indentation, cable isolation, radiation ageing, temperature ageing, x-ray fluorescence
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