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Updated: Jun 20, 2026

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
06:56

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Published on: May 23, 2017

Measurement of difference deformation using speckle interferometry

P K Rastogi1, P Jacquot

  • 1Laboratory of Stress Analysis, Swiss Federal Institute of Technology, Lausanne, CH-1015 Lausanne, Switzerland.

Optics Letters
|September 11, 2009
PubMed

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Measurements of Strain01:27

Measurements of Strain

Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain gauge...