Resistance to brittle fracture of glass reinforced polymer composites used in composite (nonceramic) insulators

被引：39

作者：

Kumosa, LS ^{[1
]}

Kumosa, MS ^{[1
]}

Armentrout, DL ^{[1
]}

机构：

[1] Univ Denver, Dept Engn, Ctr Adv Mat & Struct, Denver, CO 80208 USA

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2005年 / 20卷 / 04期

关键词：

brittle fracture; composite (nonceramic polymer) insulators; design; prevention; stress corrosion cracking;

D O I：

10.1109/TPWRD.2005.852289

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, the most important results are presented and discussed from a multiyear interdisciplinary study directed toward the identification of the most suitable glass/polymer composite systems with the highest resistance to brittle fracture for high voltage composite insulator applications. Several unidirectional glass/polymer composite systems, commonly used in composite insulators, based either on E-glass or ECR-glass fibers embedded in either polyester, epoxy, or vinyl ester resins have been investigated for their resistance to stress corrosion cracking in nitric acid. The most important factors (fiber and resin types, surface fiber exposure, polymer fracture toughness, moisture absorption, interfacial properties, sandblasting) affecting the resistance of the composites to brittle fracture have been identified and thoroughly analyzed. It has been shown that the brittle fracture process of composite (nonceramic) insulators can be successfully eliminated, or at least dramatically reduced, by the proper chemical optimization of composite rod materials for their resistance to stress corrosion cracking.

引用

页码：2657 / 2666

页数：10

共 47 条

[1]

AKHTAR A, 1987, J COMPOS TECH RES, V9, P95, DOI 10.1520/CTR10248J

[2]

AKHTAR A, 1986, 186T350 CAN EL ASS B

[3]

Armentrout D, 2004, IEEE T DIELECT EL IN, V11, P506

[4]

Armentrout D, 2003, J COMPOS TECH RES, V25, P202

[5]

Armentrout D., 1998, Journal of Acoustic Emission, V16, pS10

[6] Boron-free fibers for prevention of acid induced brittle fracture of composite insulator GRP rods [J].

Armentrout, DL ;

Kumosa, M ;

McQuarrie, TS .

IEEE TRANSACTIONS ON POWER DELIVERY, 2003, 18 (03) :684-693

[7]

*ASTM, D57898 ASTM

[8] Mechanical evaluation of axially loaded composite insulators with crimped end-fittings [J].

Bansal, A ;

Kumosa, M .

JOURNAL OF COMPOSITE MATERIALS, 1997, 31 (20) :2074-2104

[9] Finite element analysis of substation composite insulators [J].

Bansal, A ;

Schubert, A ;

Balakrishnan, MV ;

Kumosa, M .

COMPOSITES SCIENCE AND TECHNOLOGY, 1995, 55 (04) :375-389

[10] IEEE task force report: Brittle fracture in nonceramic insulators [J].

Burnham, JT ;

Baker, T ;

Bernstorf, A ;

de Tourreil, C ;

George, JM ;

Gorur, R ;

Hartings, R ;

Hill, B ;

Jagtiani, A ;

McQuarrie, T ;

Mitchell, D ;

Ruff, D ;

Schneider, H ;

Shaffner, D ;

Yu, J ;

Varner, J .

IEEE TRANSACTIONS ON POWER DELIVERY, 2002, 17 (03) :848-856

← 1 2 3 4 5 →