Partial discharge-induced crack growth in dielectric materials

被引：0

作者：

Luo JiaCheng ^{[1
]}

Gao CunFa ^{[1
]}

Dai XiangHua ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Aerosp Engn, Nanjing 210016, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2010年 / 53卷 / 05期

基金：

中国国家自然科学基金;

关键词：

crack; dielectric materials; partial discharge; electric field effects;

D O I：

10.1007/s11433-010-0184-0

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Partial discharge (PD) of an air-filled semi-permeable crack in a dielectric material is studied based on the streamer-type discharge mechanism to explore the effects of applied mechanical-electric fields on crack growth. Within the frame of two-dimensional deformation, the electric field inside the crack is first derived by taking the crack deformation into account. Then, the effects of electric field before PD are discussed through considering the contribution of the induced electric field inside the deformed crack space to the total energy release rate. Finally, PD and its effects on crack growth are investigated. It is found that: (1) before PD, the applied electric field always retards crack growth; (2) during PD, the applied electric field can induce crack growth in dielectric materials.

引用

页码：886 / 891

页数：6

共 23 条

[1]

[Anonymous], 2000, HIGH VOLTAGE ENG FUN

[2]

BARTNIKAS R, 1979, ASTM SPECIAL TECHNIC, V669

[3] Point temperature solution for a penny-shaped crack in an infinite transversely isotropic thermo-piezo-elastic medium [J].

Chen, WQ ;

Lim, CW ;

Ding, HJ .

ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS, 2005, 29 (06) :524-532

[4] PARTIAL DISCHARGES IN ELLIPSOIDAL AND SPHEROIDAL VOIDS [J].

CRICHTON, GC ;

KARLSSON, PW ;

PEDERSEN, A .

IEEE TRANSACTIONS ON ELECTRICAL INSULATION, 1989, 24 (02) :335-342

[5] Simulation of electrical tree growth in solid dielectrics containing voids of arbitrary shape [J].

Danikas, MG ;

Karafyllidis, I ;

Thanailakis, A ;

Bruning, AM .

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 1996, 4 (06) :535-552

[6]

Eshelby J.D., 1957, PROC R SCO LOND, VA241, P396

[7] Fracture criteria of piezoelectric ceramics with defects [J].

Fang, DN ;

Zhang, ZK ;

Soh, AK ;

Lee, KL .

MECHANICS OF MATERIALS, 2004, 36 (10) :917-928

[8] Effects of partial discharges on crack growth in dielectrics [J].

Gao, CF ;

Noda, N .

APPLIED PHYSICS LETTERS, 2005, 86 (16) :1-3

[9] The energy release rate and the J-integral of an electrically insulated crack in a piezoelectric material [J].

Gao, CF ;

Zhao, MH ;

Tong, P ;

Zhang, TY .

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, 2004, 42 (19-20) :2175-2192

[10] MEASUREMENT AND SIMULATION OF PD IN EPOXY VOIDS [J].

GUTFLEISCH, F ;

NIEMEYER, L .

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 1995, 2 (05) :729-743

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