Initiation of Stress Corrosion Cracking in Unidirectional Glass/Polymer Composite Materials
作者： M. Megel , L. Kumosa , T. Ely , D. Armentrout , M. Kumosa
DOI: 10.1016/S0266-3538(00)00208-6
关键词:
摘要: The purpose of this research is to determine the resistance stress-corrosion cracking (SCC) three unidirectional (pultruded) E-glass/polymer composites based on modified polyester, epoxy and vinyl ester resins. have been subjected a nitric acid solution pH 1.2 in newly designed four-point bend fixture. process was initiated as-supplied surfaces composites. has monitored for acoustic emissions surface damage specimens investigated by use scanning electron microscopy. Experimental results indicate that cracks originate predominantly from exposed glass fibers can be successfully means emission equipment. Three stages SCC, crack initiation, sub-critical extension stable propagation, distinguished carefully examining curves (number events) versus time. For first second outputs are linear functions slopes time used quantitatively both initiation extension, respectively. It shown SCC E-glass/vinyl composite approximately 10 times greater than E-glass/epoxy composite. Furthermore, system exhibits 5 higher E-glass/modified polyester system. also significantly more rapid
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sci-hub.se 参考文章(23)
S. H. Carpenter, M. Kumosa, An investigation of brittle fracture of composite insulator rods in an acid environment with either static or cyclic loading Journal of Materials Science. ,vol. 35, pp. 4465- 4476 ,(2000) , 10.1023/A:1004885813659
L. Paris, L. Pargamin, D. Dumorora, R. Parraud, Rating of composite suspension insulators related to the long term mechanical strength of rods IEEE Transactions on Power Delivery. ,vol. 9, pp. 2055- 2063 ,(1994) , 10.1109/61.329538
M. Kumosa, H. Shankara Narayan, Q. Qiu, A. Bansal, Brittle Fracture of Non-Ceramic Suspension Insulators with Epoxy Cone End-Fittings Composites Science and Technology. ,vol. 57, pp. 739- 751 ,(1997) , 10.1016/S0266-3538(97)00034-1
M.J. Owen, S.J. Harris, B. Noble, Failure of high voltage electrical insulators with pultruded glass fibre-reinforced plastic cores Composites. ,vol. 17, pp. 217- 226 ,(1986) , 10.1016/0010-4361(86)91005-0
S. J. Harris, B. Nobel, M. J. Owen, Metallographic investigation of the damage caused to GRP by the combined action of electrical, mechanical and chemical environments Journal of Materials Science. ,vol. 19, pp. 1596- 1604 ,(1984) , 10.1007/BF00563057
Abdul R. Chughtai, Dwight M. Smith, Maciej S. Kumosa, Chemical analysis of a field-failed composite suspension insulator Composites Science and Technology. ,vol. 58, pp. 1641- 1647 ,(1998) , 10.1016/S0266-3538(97)00233-9
Jacques Lanteigne, Claude de Tourreil, The mechanical performance of GRP used in electrical suspension insulators Computers & Mathematics With Applications. ,vol. 11, pp. 1007- 1021 ,(1985) , 10.1016/0898-1221(85)90021-5
T. Ely, M. Kumosa, The Stress Corrosion Experiments on an E-Glass/Epoxy Unidirectional Composite Journal of Composite Materials. ,vol. 34, pp. 841- 878 ,(2000) , 10.1177/002199830003401002
Q. Qiu, M. Kumosa, Corrosion of E-glass fibers in acidic environments Composites Science and Technology. ,vol. 57, pp. 497- 507 ,(1997) , 10.1016/S0266-3538(96)00158-3
M Kumosa, D Hull, JN Price, None, Acoustic emission from stress corrosion cracks in aligned GRP Journal of Materials Science. ,vol. 22, pp. 331- 336 ,(1987) , 10.1007/BF01160589