Title :
Research on the brittle fracture of FRP rods and its acoustic emission detection
Author :
Xidong, Liang ; Ju, Fan ; Ling, Chen
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
Brittle fracture of composite insulator FRP rods has aroused widespread attention in China. In the laboratory, two load-applying methods are used to simulate the brittle fracture process. One is constant tensile load method, which is used to test the resistance of FRP core against stress corrosion. The other is decreasing tensile load method, with the purpose to simulate similar appearance of brittle fracture section in service. Some important factors that influence the brittle fracture process, which are not well described in IEC Drafts are discussed and clarified. Finally, the acoustic emission (AE) feature of the brittle fracture process is analyzed. It is in great difference from normal short-term tensile failure process
Keywords :
acoustic emission testing; brittle fracture; carbon fibre reinforced plastics; composite insulators; corrosion testing; stress corrosion cracking; tensile testing; China; FRP core; FRP rods brittle fracture; acoustic emission detection; acoustic emission feature; brittle fracture process simulation; composite insulators; constant tensile load method; decreasing tensile load method; load-applying methods; stress corrosion resistance; Acoustic emission; Acoustic signal detection; Corrosion; Fiber reinforced plastics; Insulation; Laboratories; Power systems; Surface cracks; Tensile stress; Testing;
Conference_Titel :
Power Engineering Society Winter Meeting, 2000. IEEE
Print_ISBN :
0-7803-5935-6
DOI :
10.1109/PESW.2000.847329
