LASER ultrasonic three-dimensional imaging of the aluminum block with artificial defects
Laser ultrasonic (LU) three-dimensional (3D) imaging system combining wavelet threshold method (WTM) is presented, in which a laser beam is as a scanner and an interferometer is as a receiver.The ultrasonic signals saved are processed by wavelet threshold for reducing noise.Then, the data processed constitutes a 3D matrix in the scanning sequence, which could reconstruct the object model of aluminum block with artificial defects using MATLAB procedure.And defects inside the sample can be imaged and visualized.The results show that 3D ultrasonic imaging is a novel technique to reconstruct object model for visualizing damages or flaws inside the materials.
laser ultrasonic three-dimensional imaging Aluminum block defects
Zhenzhen Zhang Ailing Yang Yang Zhao
NDT Lab, Laser Institute of Shandong Academy of Sciences, Jinan 250103 China Department of Physics, Ocean University of China, Qingdao 266100 China
国内会议
光纤和光电子传感器及其安全应用国际会议(OFSIS2015)
济南
英文
238-243
2015-01-20（万方平台首次上网日期，不代表论文的发表时间）