New Data Reduction Schemes for the DCB and ENF Tests of Fracture-Resistant Composites
Proposed in this study are new data reduction schemes for the DCB test and the ENF test. The former uses the relation between normalized crack length and the cubic root of the load-line compliance. The latter uses the CSD (Crack Shear Displacement) or the CSD compliance. R-curves both in the Mode I loading and in the Mode II loading were obtained to apply those schemes to Celion 6000/PMR-15 composite system. This system showed the interlaminar fracture resistant behaviour in both modes, which means the increasing toughness as the crack propagates.
KeywordsFracture Toughness Crack Initiation Crack Length Energy Release Rate Double Cantilever Beam
Unable to display preview. Download preview PDF.
- 1 -.Carlsson L.A. and Pipes R.B., Experimental Characterization of Advanced Composite Materials, Prentice-Hall, New Jersey (1987)Google Scholar
- 2 -.Kageyama K., Kikuchi M. and Yanagisawa N., submitted to ASTM STP: Fatigue and Fracture, (1989)Google Scholar
- 3 -.
- 4 -.Russell AJ. and Street K.N., Proc. ICCM-IV, (1982), pp.279Google Scholar