Application of Industrial CT in Gas Turbine Blade Inspection

With the proposal of the “dual carbon” strategy in China, heavy-duty gas turbines using clean energy have been vigorously developed. Gas turbine blades, as the main power source of gas turbines, are not only subjected to complex stress effects, but also withstand the corrosion of high-temperature and high-pressure media. During operation, they are prone to defects such as fractures, which affect the safety of gas turbine operation. Therefore, blades require regular non-destructive testing during manufacturing and operation. The internal structure of the blades is complex, and among the commonly used testing methods, radiographic testing is more suitable for blade testing. This article compares conventional X-ray and industrial CT detection methods, analyzes the shortcomings of current X-ray detection of blades, and verifies the blade industrial CT detection method explored in this article. It determines the role and advantages of industrial CT in blade detection, which is of great significance for ensuring the safe operation of heavy-duty gas turbines and promoting digital development.