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Interface fracture assessment on honeycomb sandwich composite DCB specimens
Published in
2012
Volume: 93
   
Pages: 108 - 118
Abstract
This paper deals with the fracture analysis on the honeycomb sandwich composite double cantilever beam (DCB) specimens. Analytical expression for the strain energy release rate (. G I) of the specimen is derived from modified elastic foundation model utilising the compliance derivative method. The results obtained from 3D finite element analysis for various delamination lengths compare well with the analytical results. A simple and improved procedure is suggested for evaluation of the interface fracture toughness (. G IC), which takes into account the scatter in fracture data, and demonstrates its validity through comparison of existing test results with estimated failure loads. © 2012 Elsevier Ltd.
About the journal
JournalEngineering Fracture Mechanics
ISSN00137944
Open AccessNo
Concepts (21)
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    3D-FINITE ELEMENT ANALYSIS
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    Analytical expressions
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    Analytical results
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    DCB SPECIMEN
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    DELAMINATION LENGTH
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    DERIVATIVE METHOD
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    DOUBLE CANTILEVER BEAM
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    ELASTIC FOUNDATION MODEL
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    FACE SHEETS
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    FAILURE LOAD
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    FRACTURE ANALYSIS
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    FRACTURE DATA
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    HONEYCOMB SANDWICH COMPOSITE
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    HONEYCOMB SANDWICH PANELS
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    INTERFACE FRACTURE
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    INTERFACE FRACTURE TOUGHNESS
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    Delamination
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    Finite element method
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    Fracture toughness
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    Strain energy
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    Fracture