Widefield laser doppler velocimeter: development and theory.

Hansche, Bruce David ; Reu, Phillip L. ; Massad, Jordan Elias

Sandia National Laboratories

关键词: Optics-Instrumentation.;    Mathematical Models Laser Doppler Velocimeter.;    Lasers;    Velocity;    Operation;   

DOI  :  10.2172/902222
RP-ID  :  SAND2007-0311
RP-ID  :  AC04-94AL85000
RP-ID  :  902222

美国|英语

来源: UNT Digital Library

【 摘 要 】

The widefield laser Doppler velocimeter is a new measurement technique that significantly expands the functionality of a traditional scanning system. This new technique allows full-field velocity measurements without scanning, a drawback of traditional measurement techniques. This is particularly important for tests in which the sample is destroyed or the motion of the sample is non-repetitive. The goal of creating ''velocity movies'' was accomplished during the research, and this report describes the current functionality and operation of the system. The mathematical underpinnings and system setup are thoroughly described. Two prototype experiments are then presented to show the practical use of the current system. Details of the corresponding hardware used to collect the data and the associated software to analyze the data are presented.