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Development and the Application of the Photonic Doppler Velocimetry

Author: YuTao
Tutor: WangJian
School: Beijing Jiaotong University
Course: Optics
Keywords: Speed ??measurement The photon Doppler velocity measurement system Laser Shock Fringe method
CLC: TP274.4
Type: Master's thesis
Year: 2011
Downloads: 44
Quote: 2
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Abstract


Laser speed technology in the shock wave and detonation wave field is an important test means, to further study the nature of the material and the development of new materials has an important meaning, and help to explosive detonation drugs can contain material research also plays an important role. In this paper, the laser velocimetry progress for the detailed research, and to each phase velocity and the advantages and disadvantages of the technology are analyzed and compared. To the photon Doppler velocity measurement (Photonic Doppler Velocimetry: PDV) system structure and testing principle in detail, the detection process involves basic formula in this paper. The design and construction of the laser peripheral circuit, obtained the good laser light source, on this basis, the completed PDV system building and debugging process. Use PDV system to accomplish the vibration table vibration and hopkinson bar speed detection experiments, detected results and use other ways to test results of the same kind. In laser shock processing experiments, the completion of the aluminum sheet back free surface velocity measurements, won the aluminum sheet initial stage movement speed rising edge, measuring results and the theoretical calculation result completely consistent.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Centralized testing and roving detection system
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