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- W2058443375 abstract "A test is described for measuring a minimum fracture energy, G1c, in materials with a well-defined direction of weakness. A crack is propagated ahead of a razor-blade, and the fracture energy is calculated from measurement of the crack length, section thickness, and blade thickness only. Knowledge of the elastic moduli of the material is required, but this obviates the need for any load measurements to be made during the tests. No special specimen geometry is necessary, and specimens as specimens as small as 10 mm parallel and 4 mm normal to the direction of weakness have been tested successfully. Accuracies of better than ±10% are obtained routinely, and the results agree well with data from conventional tests.The use of the test is illustrated with reference to composites of uniaxially aligned carbon fibres in PEEK, poly(ether-ether-ketone). The materials studied were based on the ICI material APC2 (Aromatic Polymer Composite)." @default.
- W2058443375 created "2016-06-24" @default.
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- W2058443375 date "1988-01-01" @default.
- W2058443375 modified "2023-09-27" @default.
- W2058443375 title "The measurement of fracture energy in aligned composites" @default.
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- W2058443375 doi "https://doi.org/10.1016/0266-3538(88)90015-2" @default.
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