PSNet
Another article of interest may be:
"A Comparative Investigation of Electrothermal Endurance Models for
Insulating Materials and Systems Characterization" by Gian Carlo Montanari,
Dept of Electrical Engineering, University of Bologna. IEEE Electrical
Insulation Magazine, May/June 1997 - Vol 13, No 3.
Key Words: Electrothermal stress, ageing, phenomenological life models,
physical life models, stochastic and non-parametric models.
From the introduction: The models for investigating the electrical
and multi-stress endurance of insulating materials are mainly of a
phenomenological nature. Their purpose is to provide parameters useful for
the characterization of materials and insulation systems, comparisons of
their performance and, eventually, life and stress-design estimation. ...
From the conclusions, the author covers the two principal
approaches to investigation, i.e. the phenomenological description of
insulation endurance or the physical causes of aging and breakdown, having
given the known analytical basis for each. He further describes the
opportunity to develop shorter test methodologies providing better
long-term behavior information.
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