A New Biaxial Strain Gauge
Strain is measured by recording the motion of fringes produced by laser light incident on adjacent pyramidal indentations in a specimen surface. The gauge length of this noncontacting technique is of the order of 0.1 mm. The theory of the fringe formation and the relation of fringe motion to strain...
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| Veröffentlicht in: | Review of scientific instruments 1970-10, Vol.41 (10), p.1440-1443 |
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| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Strain is measured by recording the motion of fringes produced by laser light incident on adjacent pyramidal indentations in a specimen surface. The gauge length of this noncontacting technique is of the order of 0.1 mm. The theory of the fringe formation and the relation of fringe motion to strain are given along with an experimental evaluation of the validity of the technique. Biaxial strains can be measured both for known and unknown principal strain directions. |
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| ISSN: | 0034-6748 1089-7623 |
| DOI: | 10.1063/1.1684305 |