Environmental vibration influence on the blade inspection by an optical scanning device

Abstract

Blades are critical parts of aero-engine and nuclear turbine, and it is important to inspect blades by optical method accurately. In this paper, an optical scanning device is designed for inspecting blades. In general, the main external factor affecting the accuracy in the process is environmental vibration, the following parts studied the influence of environmental vibration on the device. First, the characteristics of the environmental vibration are analyzed to find out the frequency range affecting the inspection accuracy. Second, the intrinsic frequency of the device is obtained by modal analysis. Third, the response of the device under external vibration is obtained by simulation experiment. At last, experiments show that the inspection accuracy is 0.0277mm when the environmental vibration frequency is equal to the intrinsic frequency, which can meet the inspection requirements very well.

Part Classification Prediction Based on Convolutional Neural Network

“…It adopts the technology of interest point detection and interest point description, which can improve the e ciency and accuracy of parts detection to a certain extent. R Song [12] proposed an accurate detection method for blades, which uses optical detection and improves the detection accuracy of parts through an optical scanning device used to check blades.…”