6533b862fe1ef96bd12c6431

RESEARCH PRODUCT

Model of delamination propagation in brittle-matrix composites under cyclic loading

Janis AndersonsMasaki HojoShojiro Ochiai

subject

Materials sciencePolymers and PlasticsMechanical EngineeringDelaminationMode (statistics)laminated compositeFracture mechanics02 engineering and technologyParis' lawFibre-reinforced plastic021001 nanoscience & nanotechnologyFatigue limitdelaminationMatrix (mathematics)020303 mechanical engineering & transportsBrittleness0203 mechanical engineeringMechanics of MaterialsMaterials ChemistryCeramics and CompositesComposite material0210 nano-technologycyclic loading

description

A model of interlaminar fatigue crack growth based on damage accumulation ahead of the crack is proposed. Linear cumulative assumption is used for damage estimation, and a quadratic failure criterion is applied for complex interlaminar loading. Model parameters are determined from mode I and mode II fatigue tests, and used to predict mixed-mode delamination propagation rate. Comparison of theoretical prediction with mixed-mode test results for different brittle graphite FRP at several mode- and load ratios show reasonable agreement.

http://hdl.handle.net/2433/3094