Tensile and Fracture Behavior in Mode I and Mode II of Fiber Reinforced Plastics Following Reactor Irradiation
Various fiber reinforced plastics (epoxies, poly- and bismaleimides as resins; two- and three-dimensional E-, S- or T-glass fabrics as reinforcements) were irradiated at room temperature by 2 MeV electrons and 60Co-gamma rays up to 1.8×108 Gy and by different reactor spectra up to a neutron fluence of 1×1023 m2(E>0.1MeV) at room temperature, 80 K or 5 K. Mechanical tests in the tensile as well as in the intralaminar crack opening (mode I) and in the shear mode (mode II) were carried out on the irradiated samples at 77 K. After low temperature irradiation, half of the samples were subjected to warm-up cycles to room temperature before testing at 77 K. Results on the influence of different radiation sources and annealing cycles on the mechanical properties of all composites will be compared.
KeywordsCrack Initiation Ultimate Tensile Strength Temperature Irradiation Radiation Environment Reactor Irradiation
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- 2.Insulators for Fusion Applications, IAEA-TECDOC-417, IAEA, Vienna (1987).Google Scholar
- 4.K. Humer, H.W. Weber, and E.K. Tschegg, Radiation effects on insulators for superconducting fusion magnets, Cryogenics in press.Google Scholar
- 5.H.W. Weber, and E.K. Tschegg, Test program for mechanical strength measurements on fiber reinforced plastics exposed to radiation environments, Adv. Cryog. Eng. 36:863 (1990).Google Scholar
- 6.K. Humer, H.W. Weber, E.K. Tschegg, S. Egusa, R.C. Birtcher, and H. Gerstenberg, Tensile and shear fracture behavior of fiber reinforced plastics at 77K irradiated by various radiation sources Adv. Cryog. Eng. 40B:1015 (1994).Google Scholar
- 7.K. Humer, H.W. Weber, E.K. Tschegg, S. Egusa, R.C. Birtcher, and H. Gerstenberg, Tensile strength of fiber reinforced plastics at 77K irradiated by various radiation sources J. Nucl. Mat. 212–215:849 (1994).Google Scholar
- 8.K. Humer, H.W. Weber, E.K. Tschegg, S. Egusa, R.C. Birtcher, H. Gerstenberg, and B.N. Goshchitskii, Low temperature tensile and fracture mechanical strength in mode I and mode II of fiber reinforced plastics following various irradiation conditions Proc. SOFT 18, Karlsruhe, Germany (in press).Google Scholar
- 9.K. Humer, H.W. Weber, E.K. Tschegg, H. Gerstenberg, and B.N. Goshchitskii, Tensile and fracture behavior in mode I and mode II of fiber reinforced plastics at 77K following low temperature irradiation Cryogenics (1995) in press.Google Scholar
- 14.K. Humer, E.K. Tschegg, and H.W. Weber, Specimen size effect and fracture mechanical behavior of fiber reinforced plastics in the crack opening mode (mode I), Cryogenics (ICMC Supplement) 32:14 (1992).Google Scholar
- 16.K. Humer, Thesis, Technical University of Vienna (1993).Google Scholar