Two-dimensional surface strain measurement based on a variation of Yamaguchi's laser-speckle strain gauge
- Author
- Barranger, John P.
- Published
- JAN 1, 1990.
- Physical Description
- 1 electronic document
Online Version
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- Restrictions on Access
- Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access - Summary
- A novel optical method of measuring 2-D surface strain is proposed. Two linear strains along orthogonal axes and the shear strain between those axes is determined by a variation of Yamaguchi's laser-speckle strain gage technique. It offers the advantages of shorter data acquisition times, less stringent alignment requirements, and reduced decorrelation effects when compared to a previously implemented optical strain rosette technique. The method automatically cancels the translational and rotational components of rigid body motion while simplifying the optical system and improving the speed of response.
- Other Subject(s)
- Collection
- NASA Technical Reports Server (NTRS) Collection.
- Note
- Document ID: 19900013468.
Accession ID: 90N22784.
E-5530.
NAS 1.15:103162.
NASA-TM-103162.
Conference on Optical Testing and Metrology 3; 8-13 Jul. 1990; San Diego, CA; United States. - Terms of Use and Reproduction
- No Copyright.
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