Effect of surface reflectivity on photonic Doppler velocimetry measurement
文献类型：期刊论文
| 作者 | Wu XQ(吴先前) ; Xia WG(夏伟光); Wang X(王曦); Song HW(宋宏伟); Huang CG(黄晨光); Huang CG(黄晨光)
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| 刊名 | Measurement Science and Technology
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| 出版日期 | 2014 |
| 卷号 | 25页码:055207 |
| 通讯作者邮箱 | huangcg@imech.ac.cn |
| 关键词 | onic Doppler velocimetry surface reflectivity back free surface velocity multiple Doppler shifts |
| ISSN号 | 0957-0233 |
| 产权排序 | [Wu, Xianqian; Xia, Weiguang; Wang, Xi; Song, Hongwei; Huang, Chenguang] Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China; [Wu, Xianqian] Case Western Reserve Univ, Cleveland, OH 44106 USA |
| 通讯作者 | 黄晨光 |
| 合作状况 | 国内 |
| 中文摘要 | While photonic Doppler velocimetry (PDV) is becoming a common diagnostic for tracking velocity in shock physical experiments, its validity on measuring surfaces with different reflectivity is not studied. This paper investigates the effects of surface reflectivity on PDV measurement for tracking back free surface velocity in laser shock processing. Credible measurement results for coarse polished surfaces with low reflectivity are obtained, whereas fine polished surfaces with relatively high reflectivity lead to heterodyne fringes with high frequency and corresponding unreasonably fast velocities. This phenomenon reported in the paper is somewhat inconsistent with the general view that PDV has remarkable robustness to large changes in surface reflectivity. The reason might be ascribed to multiple reflections of light, which cause the generation of multiple Doppler shifts. The mixing of the reference light and those Doppler-shifted lights brings out high frequency heterodyne fringes resulting in high velocity. Low surface reflectivity is better suited for PDV measurements. |
| 分类号 | 二类/Q2 |
| 收录类别 | SCI ; EI |
| 资助信息 | This work is funded by the Instrument Project of Chinese Academy of Sciences (CAS) (grant no. YZ200930); additional funding is also provided by the National Natural Science Foundation of China (NNSFC) (grant no 11332011). |
| 原文出处 | http://dx.doi.org/10.1088/0957-0233/25/5/055207 |
| 语种 | 英语 |
| WOS记录号 | WOS:000334352000025 |
| 公开日期 | 2014-05-20 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/48825]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 通讯作者 | Huang CG(黄晨光) |
| 推荐引用方式 GB/T 7714 | Wu XQ,Xia WG,Wang X,et al. Effect of surface reflectivity on photonic Doppler velocimetry measurement[J]. Measurement Science and Technology,2014,25:055207. |
| APA | Wu XQ,Xia WG,Wang X,Song HW,Huang CG,&黄晨光.(2014).Effect of surface reflectivity on photonic Doppler velocimetry measurement.Measurement Science and Technology,25,055207. |
| MLA | Wu XQ,et al."Effect of surface reflectivity on photonic Doppler velocimetry measurement".Measurement Science and Technology 25(2014):055207. |
入库方式： OAI收割
来源：力学研究所
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