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Specimen size effect on tensile strength of three-dimensionally glass-fabric reinforced plastics at room and cryogenic temperatures.

Author(s) : HUMER K., TSCHEGG E. K., WEBER H. W., NOMA K., YASUDA J., IWASAKI Y.

Type of article: Article

Summary

The material which has been developed as insulating and support materials for superconducting fusion magnets, needs to be evaluated with regard to their mechanical properties at low temperatures and in a neutron radiation environment. Since standardized sample geometries are far too large in relation to the space limitations of existing low temperature irradiation facilities, scaling experiments have been performed to investigate the influence of sample size on the ultimate tensile strength at room temperature, 77 and 4.2 K. The results show a decrease of the ultimate tensile strength by about 20% with decreasing sample size and at lower test temperatures. Fractographic investigations show that there is no completely systematic dependence of the fracture surfaces on sample size.

Details

  • Original title: Specimen size effect on tensile strength of three-dimensionally glass-fabric reinforced plastics at room and cryogenic temperatures.
  • Record ID : 1993-2406
  • Languages: English
  • Source: Cryogenics - vol. 33 - n. 2
  • Publication date: 1993

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