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A high-temperature mechanical spectroscopy system, based on non-contact laser vibrometry, has been developed to investigate the temperature dependence of the flexural damping properties of materials and coatings up to 900°C. Results for the damping coefficient and Young's modulus have been obtained for several high temperature alloys (FeCrAlY and a single crystal, Ni-based superalloy PWA 1484), ceramics...
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