An assessment is made of the potential of carbon fiber reinforced plastics (C.F.R.P.) as fatigue resistant materials. Two commonly available thermosetting resins, one an isophthalic polyester, the other an epoxy resin, have been used together with untreated, high modulus carbon fibers. Unidirectional and cross-plied specimens have been prepared by the wet lay-up and 'pre-preg' methods. Fatigue properties have been evaluated in zero-tension axial and flexural modes. Results illustrate the high potential of C.F.R.P. under fatigue loads which may be obtained with common resins. No fatigue failures were observed at stress levels below 70% of the mean static strength of the specimens. (Author).
03 FEB 1970
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