Two-dimensional optical coherence tomography for real-time structural dynamical characterization

Jianfeng Zhong, Shuncong Zhong, Qiukun Zhang, Ligang Yao

Research output: Contribution to journalArticle

15 Citations (Scopus)
141 Downloads (Pure)

Abstract

We present a two-dimensional optical coherence vibration tomography (2DOCVT) system with an ultra-precision displacement resolution of ~0.1 nm that is capable of in site real-time absolute displacement measurement of structural line vibrations. Experimental results of sinusoidal, sweep and impulse vibrations were reported. The key figures of merit such as the 2DOCVT system could obtain fast line vibration measurement without scanning and it also could be used to capture structural modal parameters in one single impulse excitation measurement without any vibration excitation input information, making it attractive for the application in low-frequency vibration measurement and response-only modal analysis.
Original languageEnglish
Pages (from-to)74-79
Number of pages6
JournalOptics and Lasers in Engineering
Volume66
Early online date16 Sep 2014
DOIs
Publication statusPublished - Mar 2015

Keywords

  • two-dimensional optical coherence tomography
  • absolute displacement measurement
  • response only modal analysis

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