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Strain measurement devices: purpose of a strain rosette (commonly misspelled as resetter) A strain rosette comprises multiple gauges at known angles bonded at a point on a surface. Identify what it directly measures. Choose the correct option.

Difficulty: Easy

Correct Answer: Linear (normal) strains along the individual gauge directions

Explanation:


Concept
A strain rosette holds multiple uniaxial strain gauges (e.g., 0°/45°/90°). Each gauge measures normal strain along its own axis.


Use
From these measured linear strains, one computes principal strains and in-plane shear strain via transformation equations. The device does not physically relieve strain.


Final Answer
Linear (normal) strains along the individual gauge directions.

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