The invention discloses a
single crystal blade orientation detection method and
system based on LIBS characteristic
spectral response, and the method comprises the steps: building a standard characteristic
spectral data set matched with orientation difference through EBSD
gold standard, aligning a to-be-detected blade with coordinates of a three-dimensional digital twin model, and planning a gridding scanning path; the method comprises the following steps: collecting original spectrums and space coordinates of all detection units through LIBS in-situ scanning, preprocessing the spectrums, calculating the actual area of each spectrum interval based on the linear
positive correlation between the spectrum intensity and the
grain boundary area, mapping the result to a digital twinborn model to complete three-color visual calibration, and finally calculating the overall anomaly rate to judge the qualification of the blade. According to the invention, in-situ nondestructive and full-surface accurate quantitative detection of the
single crystal blade is realized, the detection result is visualized in real time, the judgment logic is scientific, a modular automatic detection
system is constructed, the
system is adaptive to industrial batch online detection of
aviation single crystal blades, and the problems of low detection efficiency, non-visualized result and difficulty in industrial application in the prior art are solved.