Fracture test for double cantilever beam of honeycomb sandwich panels |
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Authors: | Shi-Dong Pan Lin-Zhi Wu Yu-Guo Sun Zheng-Gong Zhou |
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Affiliation: | Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, PR China |
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Abstract: | A modified double cantilever beam (DCB) test geometry is designed to investigate the fracture behavior of honeycomb sandwich panels containing embedded artificial pre-crack, and measure the strain energy release rate of the laminate facesheet/honeycomb cores interface. However, in terms of our DCB fracture test, owing to that the pre-crack does not propagate expectedly along the interface of facesheet/honeycomb core, a new fracture mode, namely IKP (initiation of interlaminar delamination, kinking into facesheet and propagation of interlaminar delamination), has been found. |
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Keywords: | DCB Strain energy release rate Fracture Interface Interlaminar delamination |
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