1. Xia, X.L., Zhang, Y.Y., Yang, H.X.: Development of mechanical fault diagnosis technology under the condition of modern science and technology. J. Xuzhou Inst. Technol. 21(9), 67–69 (2006). (in Chinese)
2. Cheng, S.B., Yao, J., Cai, P.: Application of ultrasonic measuring technology in the rigidity measurement. Chin. Meas. Technol. 30(1), 12–13 (2004). (in Chinese)
3. Vasudevan, M., Palanichamy, P., Venkadesan, S.: A novel technique for characterizing annealing behavior. Scr. Metall. Mater. 30(11), 1479–1483 (1994)
4. Puppin, Ezio: Statistical properties of Barkhausen noise in thin Fe films. Phys. Rev. Lett. 84(23), 5415 (2000)
5. Chen, Y.H., Li, M.X.: Application of artificial neural network to ultrasonic nondestructive testing. J. Appl. Acoust. 3, 40–44 (1996). (in Chinese)