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مکانیک::
پره سرامیکی
The test housing unit consists of the combustor basket, transition piece, inlet duct, ceramic vane cascade, and a casing in which these parts are contained.
Mounted on the rear end of the casing is a window for an infrared radiation thermometer and a sight glass to observe the ceramic vane under testing.
The cascade consists of four ceramic vanes and two metal dummy vanes at both ends.
Under emergency shutdown conditions, the ceramic vanes are suddenly cooled down and are subjected to severe thermal stresses.
Figure 8.37 shows the results of temperature measurement of the air-cooled ceramic vane under 6 atm and 1500C conditions.
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