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- W1972133494 abstract "Abstract : Dynamic photoelasticity and dynamic finite element methods were used to study dynamic responses of dynamic tear test (DTT) specimens of a ductile material, i.e. 3.2 mm (1/8 in.) thick polycarbonate sheets. Dynamic photoelastic patterns before and after the onset of unstable fracture showed that the dynamic fracture initiation toughness, K sub id, was attained during the second maximum load in the hammer load-time history and was approximately 65 percent of the fracture toughness, K sub ic. Also dynamic stress intensity factors before and after crack propagation computed by dynamic finite element method using experimentally determined hammer load-time history were in reasonable agreement with those obtained from dynamic photoelasticity. The computed dynamic stress intensity factor prior to crack propagation was also in excellent agreement with the static stress intensity factors computed from dynamic strains adjacent to the crack tip. (Author)" @default.
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- W1972133494 date "1978-01-01" @default.
- W1972133494 modified "2023-09-24" @default.
- W1972133494 title "Dynamic Photoelasticity and Dynamic Finite Element Analyses of Polycarbonate Dynamic Tear Test Specimens." @default.
- W1972133494 hasPublicationYear "1978" @default.
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