Initiation and propagation toughness of delamination crack under an impact load
In: Symposium on the Dynamic Deformation and Failure Mechanics of MaterialsJournal of the mechanics and physics of solids 46(10):1773-1787; Jg. 46 (1998) 10, S. 1773-1787
Konferenz
- print, 1 p.1/2
Zugriff:
A combined experimental and finite element method is developed to determine the interlaminar dynamic fracture toughness. An interlaminar crack is propagated at very high speed in a double cantilever beam (DCB) specimen made of two steel strips with a precrack. A special fixture is designed to apply impact load to one cantilever and determine the deflection of the cantilever-end, initiation time and crack propagation history. The experimental results are used as input data in a FE code to calculate J-integral by the gradual release of nodal forces to model the propagation of the interlaminar crack. The initiation fracture toughness and propagation fracture toughness are evaluated for interlaminar crack propagating between 850 and 1785 m/s. The initiation and propagation toughness were found to vary between 90 200 J/m2 and 2-13 J/m2 respectively. The technique is extended to study initiation and propagation toughness of interlaminar crack in unidirectional FRP laminates.
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Initiation and propagation toughness of delamination crack under an impact load
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Autor/in / Beteiligte Person: | KUMAR, P ; KISHORE, N. N |
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Quelle: | Symposium on the Dynamic Deformation and Failure Mechanics of MaterialsJournal of the mechanics and physics of solids 46(10):1773-1787; Jg. 46 (1998) 10, S. 1773-1787 |
Veröffentlichung: | Oxford: Elsevier, 1998 |
Medientyp: | Konferenz |
Umfang: | print, 1 p.1/2 |
ISSN: | 0022-5096 (print) |
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