Measurement of Three-Dimensional Deformations by Phase-Shifting Digital Holographic Interferometry

  • Percival Almoro
  • Marilou Cadatal
  • Marlon Rosendo Daza

Abstract

Out-of-plane deformations of a cantilever were measured using phase-shifting digital holographic interferometry (PSDHI) and the Fourier transform method (FTM). The cantilever was recorded in two different states, and holograms were stored electronically with a charge-coupled device (CCD) camera. When the holograms are superimposed and reconstructed jointly, a holographic interferogram results. The three-dimensional (3D) surface deformations were successfully visualized by applying FTM to holographic interferogram analysis. The minimum surface displacement measured was 0.317 µm. The processing time for the digital reconstruction and visualization of 3D deformation took about 1 minute. The technique was calibrated using Michelson interferometry setup.
Published
2007-07-16
How to Cite
ALMORO, Percival; CADATAL, Marilou; DAZA, Marlon Rosendo. Measurement of Three-Dimensional Deformations by Phase-Shifting Digital Holographic Interferometry. Science Diliman: A Journal of Pure and Applied Sciences, [S.l.], v. 15, n. 1, july 2007. ISSN 2012-0818. Available at: <https://journals.upd.edu.ph/index.php/sciencediliman/article/view/130>. Date accessed: 05 aug. 2025.
Citation Formats
Issue
Vol 15 No 1 (2003)
Section
Articles
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