[2] [2] Yanhong J , Fubao Y , Daquan L , et al. X-ray Inspection of MIM 418 Superalloy Turbine Wheels and Defects Analy- sis [ J ] . Rare Metal Materials & Engineering , 2017 , 46(2) : 317-321.

[3] [3] Tian Y , Zhu C , Gong J , et al. In Situ Synchrotron Radia- tion X-Ray Scattering and Diffraction Measurement Studies on Structure and Morphology of Fibers [ J ] . Progress in Chemistry , 2013 , 25(10) :1751- 1762.

[4] [4] Wu Y , Zhang B , Li J , et al. Ultrasonic detection for fiber broken in aero-engine integral bladed ring[J] . Acta Metall Sin , 2020 , 56(8) : 1175- 1184.

[6] [6] Tariq F , Naz N , Baloch R , et al. Characterization of Mate- rial Properties of 2xxx Series Al-Alloys by Non Destructive Testing Techniques[J] . Journal of Nondestructive Evalua- tion , 2012 , 31(1) :17-33.

[9] [9] Guo B , Zhang Z , Li R , et al. Ultrasonic and eddy current non-destructive evaluation for property assessment of 6063 aluminum alloy[J] . NDT and E International ,2018 ,93 :34 -39.

[10] [10] Hua H , Mandelis A , Liu L , et al. Non - destructive and non - contacting stress - strain characterization of aerospace metallic alloys using photo - thermo - mechanical radiometry[J] . NDT and E International , 2016 ,84 :47-53.

[11] [11] Wang Y , Jiang Z , Xing M , et al. Dynamic yield and spall- ation properties of aluminum alloys at different temperatures[J] . Materials Science & Engineering A , 2014 , 596(24) : 222-228.

[14] [14] Xue R , Wang X , Yang Q , et al. Grain size characteriza- tion of aluminum based on ensemble empirical mode decom- position using a laser ultrasonic technique[J] . Applied A- coustics , 2019 , 156 :378-386.

[15] [15] Xue R , Wang X , Yang Q , et al. Grain size distribution characterization of aluminum with a particle swarm optimiza- tion neural network using laser ultrasonics[J] . Applied A- coustics , 2021 , 180(12) :108125.

[16] [16] Dong F , Wang X , Yang Q , et al. Directional dependence of aluminum grain size measurement by laser - ultrasonic technique[J] . Materials Characterization , 2017 , 129 : 114 - 120.

[17] [17] Yin A , Xu X , Zhang S , et al. Analysis for angular disper- sions of surface acoustic wave velocities in BCC crystals[J] . Ultrasonics , 2021(2) :106374.

[18] [18] Garcin T , Schmitt J , Militzer M. In - situ laser ultrasonic grain size measurement in superalloy INCONEL 718[J] . Journal of Alloys & Compounds , 2016 , 670 :329-336.

[19] [19] Shinbine A , Garcin T , Sinclair C. In - situ laser ultrasonic measurement of the hcp to bcc transformation in commer- cially pure titanium[J] . Materials Characterization , 2016 , 117 :57-64.

[20] [20] Dong F , Wang X , Quan Y , et al. In-situ measurement of Ti- 6Al - 4V grain size distribution using laser - ultrasonic technique[J] . Scripta Materialia , 2018 , 154 :40-44.

[26] [26] Zhu Z , Peng H , Xu Y , et al. Characterization of Precipita- tion in 7055 Aluminum Alloy by Laser Ultrasonics [ J ] . Metals , 2021 , 11(2) :275.

[27] [27] Konstantin D , Dominique Z. Variational Mode Decomposi- tion[J] . IEEE Trans. Signal Processing , 2014 , 62 ( 3) : 531-544.

[29] [29] Zhang Y , Wang X , Yang Q , et al. Characterization of mean grain size of interstitial-free steel based on laser ultra- sonic[J] . Journal of Materials Science , 2018 , 53 : 8510 - 8522.