Patent ID: 9250188
Filing Date: 2016-02-02
CPC Classification: G01N

Claim Text:
1. A method for measuring cooling effectiveness of a component, the method comprising: providing the component having a surface provided with a coating comprising an inorganic compound; supplying a first gaseous medium from a first source, through a plurality of holes in the component, for forming a cooling film of the first gaseous medium on the surface; feeding a second gaseous medium comprising a reactant, from a second source, along the surface of the component; exposing the component to a flow of the first and second gaseous mediums for a predetermined period, wherein the reactant chemically reacts with at least a portion of the coating to form a gaseous reaction product resulting in removal of the portion of the coating; obtaining at least one image via an imaging device of the surface of the component exposed to the flow of the first and second gaseous mediums; and analyzing the obtained image to determine whether at least the portion of the coating is removed from the surface of the component upon exposure to the first and second gaseous mediums for the predetermined period, wherein the removed portion of the coating is indicative of an ineffectively film cooled region on the surface of the component and a retained portion of the coating is indicative of an effectively film cooled region on the surface of the component.