Titlebook: Nondestructive Characterization of Materials; Proceedings of the 3 Paul H?ller,Viktor Hauk,Robert E. Green Conference proceedings 1989 Spri

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Nondestructive Density Measurements in Powder Metallurgy and Ceramicsm metallic or ceramic powders. The mathematical background for the assessment of this method and for evaluations of the accuracy of measurement is presented. The equipment for the practical application of density measurements in industry has been developed. Hardware and software of this computerized

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Graphite-magnesium Elastic Constants: Composite and Fiberof 70-volume-percent continuous uniaxial graphite fibers in a magnesium matrix. By ultrasonic-velocity methods, we measured the composite’s complete orthotropic-symmetry (nine-independent-component) elastic-constant tensor: C.. For a model, we used a wave-scattering method in the long-wavelength lim

玩忽職守

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Recognition of Fracture Modes and Behaviour of Composites by Acoustic Emissionerials. Recognition of the individual mode and location by on-line measurement is very important for material evaluation and design as well as. proof test. AE technology is being used for the purposes as a powerful tool. However, usual amplitude distribution analysis has a limitation because of the

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Ultrasonic Velocity Measurements in Porous Materialsials are rocks, sediments and filters. The materials used in this study are both metallic and non-metallic structures with particle sizes ranging from 15 μ to 700 μ and porosity concentration up to 40%. Wave propagation in these two phase materials has been studied by Biot [J.A.S.A. 28, 168 (1956)]