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首页> 外文期刊>Bulletin of the American Physical Society >APS -20th Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter - Event - Photon Doppler Velocimetry Measurements of Transverse Surface Velocities
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APS -20th Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter - Event - Photon Doppler Velocimetry Measurements of Transverse Surface Velocities

机译：APS第二十届APS两年一次的主题会议，主题是凝聚态物质的冲击压缩-事件-光子多普勒测速法测量横向表面速度

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摘要

Photon Doppler Velocimetry (PDV) is a prominent optical diagnostic used for measuring displacement or velocity in dynamic experiments. A table-top experiment consisting of a 31mm diameter metal wheel mounted in a hand tool was setup to make steady state transverse surface velocity measurements using PDV for a range of velocities and surface preparations. The experiment consisted of PDV collimators positioned with respect to either the side or bottom face of the wheel at various angles to resolve transverse velocity components. Different preparations for the surface of the wheel were explored such as polishing, laser etching, chemical etching, mechanical milling, and retroreflective microspheres. Light return and transverse surface velocity were recorded for each surface preparation as a function of angle. Polished aluminum allowed adequate light return for only one degree from the normal of the wheel, while the retroreflective microspheres exhibited usable light for upwards of 30 degrees. Velocity measurements were performed over a range of 0 to 45 degrees from the surface normal of the rotating wheel for each surface preparation. Velocity measurements from the PDV experiments show good accuracy with theoretical wheel velocities between 0 and 10 m/s.
机译：光子多普勒测速仪（PDV）是用于在动态实验中测量位移或速度的著名光学诊断仪。设置了一个台式实验，该实验由安装在手动工具中的直径为31mm的金属轮组成，可以使用PDV对一定范围的速度和表面处理进行稳态横向表面速度测量。该实验由PDV准直仪组成，这些准直仪相对于车轮的侧面或底面以各种角度定位，以解决横向速度分量。探索了轮毂表面的不同制备方法，例如抛光，激光蚀刻，化学蚀刻，机械研磨和逆向反射微球。记录每个表面准备的光返回和横向表面速度与角度的关系。抛光的铝只允许与车轮法线只有1度的足够的光返回，而逆向反射微球则显示30度以上的可用光。对于每种表面处理，在距旋转轮表面法线0至45度的范围内进行速度测量。 PDV实验的速度测量结果表明，理论车轮速度在0到10 m / s之间时，精度很高。

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