Using the digital phase-shifting projection Moiré method and wavelet transformation to measure the deformation of a PMMA cantilever beam

Chia Ming Liu, Lien-Wen Chen

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In the present study, the digital projection Moiré method with wavelet transformation and phase-shifting technique has been applied to measure the out-of-plane deformation of a PMMA (polymethyl methacrylate) cantilever beam. In the digital projection Moiré method, the parallel grating lines are projected onto the specimen surface and captured by a CCD camera. The projection Moiré patterns are generated by the captured image and a virtual reference grating produced from the digital image process. Clear Moiré patterns can be obtained by the 2D Debauchies wavelet transformation. The phase-shifting method can also be realized by changing the phase of the virtual reference grating. Finally, the experimental results are compared with the calculations from the finite element method.

Original languageEnglish
Pages (from-to)576-582
Number of pages7
JournalPolymer Testing
Volume24
Issue number5
DOIs
Publication statusPublished - 2005 Aug 1

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Cantilever beams
Polymethyl Methacrylate
CCD cameras
Polymethyl methacrylates
Finite element method

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry

Cite this

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title = "Using the digital phase-shifting projection Moir{\'e} method and wavelet transformation to measure the deformation of a PMMA cantilever beam",
abstract = "In the present study, the digital projection Moir{\'e} method with wavelet transformation and phase-shifting technique has been applied to measure the out-of-plane deformation of a PMMA (polymethyl methacrylate) cantilever beam. In the digital projection Moir{\'e} method, the parallel grating lines are projected onto the specimen surface and captured by a CCD camera. The projection Moir{\'e} patterns are generated by the captured image and a virtual reference grating produced from the digital image process. Clear Moir{\'e} patterns can be obtained by the 2D Debauchies wavelet transformation. The phase-shifting method can also be realized by changing the phase of the virtual reference grating. Finally, the experimental results are compared with the calculations from the finite element method.",
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Using the digital phase-shifting projection Moiré method and wavelet transformation to measure the deformation of a PMMA cantilever beam. / Liu, Chia Ming; Chen, Lien-Wen.

In: Polymer Testing, Vol. 24, No. 5, 01.08.2005, p. 576-582.

Research output: Contribution to journalArticle

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