Study on ageing characteristics and evaluation methods of RTV silicone rubber in high humidity area

Due to high humidity, the ageing of room temperature vulcanized silicone rubber (RTV) has been a serious problem in Southwestern China. In order to solve the problem of RTV life prediction, the aging classification method was established by analyzing the microtopography of RTV samples in this paper. Besides, the comprehensive analysis of RTV element content, partial element content ratio, and major chemical groups of RTV samples in each aging level were conducted. It is found that as the ageing level increases, the element contents of C, Si, O, Al change accordingly and the ratio of C:Si drops from 2.39 to 1.54, and absorption peaks of the chemical groups of Si-(CH3)2, Si-O-Si, Si-CH3 and C-H in CH3 decrease. This work can enrich the investigation of RTV, and may provide useful reference for performance evaluation and replacement of RTV in substations.

A Partial Element Equivalent Circuit-metamodel combination for fast tolerance analysis of electromagnetic systems

We propose a combination of the Partial Element Equivalent Circuit method with metamodelling in order to achieve fast tolerance analysis of electromagnetic systems. The proposed model combination can be interpreted as a multifidelity modelling approach. <br>This technique is inspired by the Multilevel Monte Carlo method and provides great benefits in terms of computational resources.

A Partial Element Equivalent Circuit-metamodel combination for fast tolerance analysis of electromagnetic systems

We propose a combination of the Partial Element Equivalent Circuit method with metamodelling in order to achieve fast tolerance analysis of electromagnetic systems. The proposed model combination can be interpreted as a multifidelity modelling approach. <br>This technique is inspired by the Multilevel Monte Carlo method and provides great benefits in terms of computational resources.