Application Of Industrial Ct System Based On Synchronous Triggering Method In Aero-Engine In-Situ Dynamic Detection

Aero engine is the heart of aircraft, and engine blades are the most important parts. They usually work in bad conditions such as high temperature, high pressure, high rotation speed and alternating load. Some tiny defects may cause disastrous consequences. An effective measure to detect the defects is nondestructive detection method bases on industrial CT technology. However, this detection method has several disadvantages, such as complicated control system, high cost and long testing cycle. And some kinds of defects are not evident during the shutdown period. Based on researches about the in situ nondestructive testing methods for aero engine, we put forward a system using CT technique to detect the rotating parts of the aero engine, which gets projection datasets of the blades from different views through its self-rotation. In this paper, the industrial CT system based on synchronous triggering method is described, and the simulation and experiment are performed to verify the method.