The diffractographic strain gage
Small strains can be accurately measured using the diffraction of light through an aperture which is fixed to a structure so that its size is a function of strain
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Abstract
A method for measuring strain using diffraction of light from a single aperture is described, and results of a comparison tensile test with an electrical-resistance strain gage are presented. The “diffractographic strain gage” is shown to have high sensitivity, linearity, accuracy and temperature compensation and the ability to operate in a variety of hostile environments. It is furthermore simple, inexpensive, and the data can be collected by eye without assistance from further instrumentation.
Keywords
Mechanical Engineer Fluid Dynamics Tensile Test Strain Gage Hostile Environment
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References
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Copyright information
© Society for Experimental Mechanics, Inc. 1971