Shearography and infrared thermography are contactless non destructive testing methods.The capability of these methods on inspecting defects in stealth coating components is studied in this paper.Under thermal loading,detection experiments are simultaneously conducted on stealth patch components utilizing both methods.In addition,vacuum loading is also applied when shearography is used in order to study the impact of different loading methods on the inspection results.The test results show that both methods can effectively identify close contact and hole type defects.However,due to the thermal diffusion properties and mechanical properties of the material,the detected defect size of the hole type defects tends to be larger.This exploration provides valuable experiences for subsequent defect detection.