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hookhans

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wxqtjw: 金币+12, 翻译EPI+1, ★★★★★最佳答案 2013-04-07 17:49:43

Ref:
The thickness of the protective coatings (for heat insulation, corrosion and wear resistances) on the turbine blade is as small as 1% of that of the blade. Since the damping effect usually becomes significant only when the coating thickness is about 2～5% of the that of the blade, the coating itself, which provides a very low damping vibration capabilities, cannot meet the requirements for the damping vibration. However, the introduction of metal coating interface may increase the damping capacity. In point of this view, the interface of the metal coating structure is one of the key constraining elements influencing (affacting) the damping properties.

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