METHOD OF DETERMINING HEAT CONDUCTIVITY OF THIN-WALL HEAT SHIELD AND DEVICE TO THIS END Russian patent published in 2011 - IPC G01N25/18 

FIELD: physics.

SUBSTANCE: invention is intended for defining heat conductivity of thin-wall heat shield on gar turbine engine vanes. Heat conductivity is measured in two steps. At first step, outer surface of uncoated specimen is uniformly heated. At second step, heat shield is applied onto specimen outer surface to regain measurement and tests. Proposed device comprises heat-isolated vent channel with detachable lateral wall accommodating plate specimen to be tested while opposite channel wall has cutout made as rectangular window wherein IR-translucent glass is arranged. Computer temperature recorders are arranged outside the device and directed toward vent channel window and on specimen surface. Note here that electric heater is used to heat specimen plane surface while cold air flow is used to cool down plate opposite surface.

EFFECT: higher validity of heat conductivity measurement.

2 cl, 3 dwg