Model multilayer toughened thermosetting advanced composites
- Univ. of Washington, Seattle, WA (United States)
A model multilayer toughened high-performance thermosetting matrix composite was developed and the interlaminar fracture toughness was measured in modes I and II. Processing was accomplished using two impregnation steps followed by an autoclave curing process to consolidate the final laminate. The final multilayer laminate structure contained layers of matrix resin with reinforcing carbon fibers separated by thin layers of matrix resin with modifier particles. Characterization of the processing was examined in terms of impregnation and final laminate morphologies. Structure-property relationships were evaluated by measuring the mode-I and -II interlaminar fracture toughness of the multilayer structure in comparison to the fracture toughness of a conventional composite with the same resin content but without the interlayer structure. The mode-II fracture toughness increased from 530 to 1135 J/m{sup 2}. No changes were observed in the mode-I fracture toughness. 20 refs., 9 figs.
- OSTI ID:
- 76228
- Report Number(s):
- CONF-900802--
- Country of Publication:
- United States
- Language:
- English
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