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Vera Obradović,Dušica B. Stojanović,Ivona Janković Častvan,Vesna Radojević,Petar S. Uskoković 한국섬유공학회 2018 Fibers and polymers Vol.19 No.9
The aim of this study was to fabricate a new kind of hybrid fabric composites with the cross-linked electrospun poly(vinyl butyral) (PVB) composite nanofibres. The experiments were performed with the 10 wt.% PVB/ethanol solution for electrospinning where the modified silica nanoparticles (mSiO2), the oxidised single-walled carbon nanotubes (o- SWCNT) and the o-SWCNT/mSiO2 hybrid nanoparticles were added to the solution. The electrospun fibres were crosslinked with glutaraldehyde (GA) afterwards in order to reinforce the composite structure by bonding to the p-aramid fabrics. The chemical and thermo-mechanical properties of the hybrid fabric composites were evaluated. The greatest improvement in thermo-mechanical properties was achieved by the sample which contained the cross-linked PVB fibres with the o- SWCNT/mSiO2 hybrid nanoparticles.
Chan-Joo Lee,Jong-Bae Park,Joong-Rin Shin,Zoran Radojevi? 대한전기학회 2006 Journal of Electrical Engineering & Technology Vol.1 No.1
This paper presents a new numerical algorithm for fault location estimation and for faults recognition based on the synchronized phasors. The proposed algorithm is based on the synchronized phasor measured from the synchronized PMUs installed at two-terminals of the transmission lines. In order to discriminate the fault type, the arc voltage wave shape is modeled numerically on the basis of a great number of arc voltage records obtained by transient recorder. From the calculated arc voltage amplitude it can make a decision whether the fault is permanent or transient. The results of the proposed algorithm testing through computer simulation are given.