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On Crack Extension in Foam Cored Sandwich Fracture Specimens
Abstract The crack propagation path in foam cored sandwich DCB specimen is analyzed using laminated beam analysis. The analysis determines whether the crack would propagate self-similarly or kink upwards or downwards, and the steady state position of the crack. Kink direction and crack propagation path predictions are in agreement with experimental observations. Fracture toughness data related to the various propagation paths is presented. The resistance curves recorded for various initial crack positions indicate some mixed mode influence on the toughness, with a minimum toughness in the range of 500–600 J/m2 corresponding to pure mode I.
On Crack Extension in Foam Cored Sandwich Fracture Specimens
Abstract The crack propagation path in foam cored sandwich DCB specimen is analyzed using laminated beam analysis. The analysis determines whether the crack would propagate self-similarly or kink upwards or downwards, and the steady state position of the crack. Kink direction and crack propagation path predictions are in agreement with experimental observations. Fracture toughness data related to the various propagation paths is presented. The resistance curves recorded for various initial crack positions indicate some mixed mode influence on the toughness, with a minimum toughness in the range of 500–600 J/m2 corresponding to pure mode I.
On Crack Extension in Foam Cored Sandwich Fracture Specimens
Matteson, R.C. (author) / Carlsson, L.A. (author) / Aviles, F. (author) / Loup, D.C. (author)
2005-01-01
10 pages
Article/Chapter (Book)
Electronic Resource
English
On crack extension in foam cored sandwich fracture specimens
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