Three-point bending tests on glass-fiber reinforced polymer GFRP/Kraft honeycomb sandwich panels after natural aging were undertaken to explore the bending performance of composite honeycomb sandwich panels after long...Three-point bending tests on glass-fiber reinforced polymer GFRP/Kraft honeycomb sandwich panels after natural aging were undertaken to explore the bending performance of composite honeycomb sandwich panels after long-term aging.The specimens’failure modes and ultimate damage patterns were recorded,and the pertinent data from the tests were statistically analyzed.A finite element model was developed to investigate the process of fiber failure based on the Hashin failure criterion.The results showed that the bending performance increased significantly,with a small dispersion of the test data;the specimen failure forms were consistent with expectations;the failure mode and result of FEM are in general agreement with the tests.展开更多
文摘Three-point bending tests on glass-fiber reinforced polymer GFRP/Kraft honeycomb sandwich panels after natural aging were undertaken to explore the bending performance of composite honeycomb sandwich panels after long-term aging.The specimens’failure modes and ultimate damage patterns were recorded,and the pertinent data from the tests were statistically analyzed.A finite element model was developed to investigate the process of fiber failure based on the Hashin failure criterion.The results showed that the bending performance increased significantly,with a small dispersion of the test data;the specimen failure forms were consistent with expectations;the failure mode and result of FEM are in general agreement with the tests.
