Fiber Grating Strain Sensors
The need to measure strain occurs in a variety of industries, ranging from aerospace design to civil engineering to traffic sensors to robotic manipulators. Measuring the deflection of a structure gives design engineers data needed to build safer and more efficient systems. Typical measurements can be approximately an inch of deflection over a 100 foot gage length (8 millistrain) for structural applications, to a micron of deflection over a meter gage (1 microstrain) for materials testing. Strain measurements are made along one, two, or three spatial axes, depending on the need.
KeywordsAxial Strain Fiber Bragg Grating Strain Sensor Transverse Strain Optical Spectrum Analyzer
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