Method and system for inspecting cooling holes of a turbine engine component

A method of imaging a turbine engine component with a thermographic sensor, the turbine engine component having a first surface and a second surface spaced from the first surface, and a plurality of cooling holes with inlets formed in the second surface and outlets formed in the first surface, the method comprising:

• flowing air through the turbine engine component, wherein at least a portion of the air enters a cooling hole of the plurality of cooling holes at the inlet at the first surface, and exits the turbine engine component at the outlet of the cooling hole at the second surface;
• obtaining, during the flowing of the air, thermographic data, wherein the thermographic data for the cooling hole is obtained when the turbine engine component and the thermograph sensor are positioned such that a viewing plane of the thermographic sensor and a centerline of the outlet or a centerline of the cooling hole form an angle in a range between 60° and 120°;
• determining a subset of the thermographic data that corresponds to the cooling hole to obtain a thermographic data subset;
• calculating a flow score for the cooling hole based on the thermographic data subset;
• and
• visually displaying the thermographic data subset and one or more of the flow score, a difference between the flow score and a reference score, or a comparison of intensity differences of thermographic data subset.