A Fiber Optical Sensor For Non–Contact Vibration Measurements
نویسندگان
چکیده
Vibration tests are widely employed in many industrial fields, and in particular in aerospace industry to evaluate the mechanical behavior of parts for aircrafts and satellites. Usually, these tests are carried out with shakers, while inertial accelerometers are used to measure the shaker table acceleration from which the vibration amplitude is computed. Some applications require the measurement of displacements and accelerations directly on the device surface. However, in some cases, as in the testing of printed circuit boards and solar panels, the inertial sensors cannot be fixed on the surface due to lack of space or because their mass perturbs the tests. These limitations can be overcome using the low-cost fiber-based sensor able to perform non-contact displacement and acceleration measurement that is described in the following section.
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