Investigation of ablation-dominated AC nozzle arcs

Fang, Michael; Bu, Wang

doi:10.1049/ip-a-3.1991.0009

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…[1,2] Shape memory polymers, as one class of typical representatives of smart polymeric materials, can memorize and recover to their shapes under external stimuli, such as heat, PH, light, and electric field, [3][4][5][6] which have been widely applied in many practical fields including aerospace, transportation, and biomedicine. [7][8][9] Self-healing polymers can be healed autonomously to restore some or all of the functions and mechanical behaviors, which would improve their service life, safety, and reliability. [10][11][12] Polylactic acid (PLA) is used as biological medical sutures and three-necked flask, which was then placed into ice water and stirred at 20 r min −1 for 30 min.…”

Section: Introductionmentioning

confidence: 99%

Fast and Efficient Electric‐Triggered Self‐Healing Shape Memory of CNTs@rGO Enhanced PCLPLA Copolymer

Ren

Chen

Yang

et al. 2019

Macro Chemistry & Physics

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Shape memory and self‐healing stimuli‐responsive polymeric materials have aroused extensive research interests due to their special functionality. In this work, a kind of novel and fast electric‐triggered self‐healing shape memory polymeric composite, based on polycaprolactone‐polylactic acid (PCLPLA) copolymer and reduced graphene oxide with embedded carbon nanotubes (CNTs@rGO), are prepared via a facile method. Interestingly, the CNTs@rGO‐PCLPLA composites show improved mechanical properties, excellent electrical conductivity, and could recover their original shape within 60 s by applying 1.42 V mm−1 electric field. Meanwhile, the proposed networks can be self‐heal rapidly and efficiently under electrothermal effect. These offer for the new material promising practical applications in aerospace, artificial skins, and electronic sensors.

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Section: Introductionmentioning

confidence: 99%

Fast and Efficient Electric‐Triggered Self‐Healing Shape Memory of CNTs@rGO Enhanced PCLPLA Copolymer

Ren

Chen

Yang

et al. 2019

Macro Chemistry & Physics

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“…in [3][4][5][6]. In circuit-breakers effects of nozzle ablation were investigated in [6][7][8][9]. With the improvement in numerical simulations an increasing number of publications can be found which included the ablation of PTFE in circuit-breaker simulations, e.g.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on PTFE ablation in high voltage circuit-breakers

Seeger

Tepper

Christen

et al. 2006

J. Phys. D: Appl. Phys.

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The average surface ablation of poly-tetra-fluro-ethylene (PTFE) nozzles in high voltage circuit-breakers was investigated experimentally by means of the specific ablation. Experiments were done with a test device in the current and arcing time range of 2–40 kArms and 5–17 ms, respectively. This allowed determining the dependences of the specific PTFE ablation on current and arcing time. Additionally, the specific PTFE nozzle ablation in commercial high voltage circuit-breakers was analysed in a broad range of current amplitudes and arcing times. For understanding the results more in detail, experiments with a small scale test device were performed. The different experiments yielded consistent values for the PTFE ablation. The ablation depends mainly on the total arc energy. The total ablation is given by the ablation of walls surrounding the arc and by the ablation in regions where plasma from the arc cools down. Different specific ablation values can be observed for the axial blown arc mode and the ablation controlled arc mode.

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“…The design and electrical field simulation of the nozzle for circuit breaker have been discussed widely [1,2]. However, the properties of nozzle material itself have not been much discussed.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ceramic Fillers on Light Reflectance and Arc Resistance of PTFE for Circuit Breaker

Park

Kang

Lee

et al. 2007

KEM

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This paper presents the effects of ceramic fillers on light reflectance and arc resistance of PTFE(polytetrafluoroethylene) for nozzle of circuit breaker. In arc environment of a circuit breaker, radiation generated from arcing is considered to play a key role in transport mechanism of arc energy to the wall. Adding some ceramic fillers into PTFE material is expected to be efficient for improving the endurance against arc radiation. In this experiment, three kinds of ceramic fillers for achieving good endurance in the high temperature were used. Light reflectance and arc resistance of PTFE composites were investigated. The arc resistance of PTFE composites increased with the amount of ceramic fillers. The light reflectance of PTFE composites filled with ceramic fillers increased in the long wavelength region and decreased largely in the short wavelength region in comparison with that of pure PTFE.

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Investigation of ablation-dominated AC nozzle arcs

Cited by 5 publications

References 1 publication

Fast and Efficient Electric‐Triggered Self‐Healing Shape Memory of CNTs@rGO Enhanced PCLPLA Copolymer

Fast and Efficient Electric‐Triggered Self‐Healing Shape Memory of CNTs@rGO Enhanced PCLPLA Copolymer

Experimental study on PTFE ablation in high voltage circuit-breakers

Effects of Ceramic Fillers on Light Reflectance and Arc Resistance of PTFE for Circuit Breaker

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