A digital shearing speckle interferometry technique for modal analysis

T. W. Ng, F. S. Chau

Research output: Contribution to journalArticleResearchpeer-review

10 Citations (Scopus)


Digital shearing speckle interferometry is a laser-based, optical, non-contacting and non-destructive method widely used for the stress and strain analysis of loaded static objects. In this paper, the authors have adapted the technique for whole-field modal analysis. The theoretical basis for this technique is presented and experimental verification is performed on a thin square plate fully constrained and subjected to a steady-state excitation.

Original languageEnglish
Pages (from-to)175-185
Number of pages11
JournalApplied Acoustics
Issue number2
Publication statusPublished - 1 Jan 1994
Externally publishedYes

Cite this