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Lixue Wu
Phone: 613-993-6966
Fax: 613-952-1394
Email: Lixue.Wu@nrc-cnrc.gc.ca
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Primary Shock Calibration Using Laser Interferometry
Metrologists in the Acoustical Standards laboratory are working on a method for calibration of shock sensitivity of accelerometers that does not require the previous calibration of a reference shock accelerometer. Instead, the time history of the displacement of the accelerometer is measured using an interferometer, with traceability to the SI through the wavelength of laser light.
The project requires the development of a suitable apparatus to generate the mechanical shock to be applied to the accelerometer, the interferometer to sense the time-dependent displacement of the accelerometer, and a signal processing system to determine the peak acceleration of the accelerometer from the displacement time history. Development of Measurement Standards Industries and consumers of products that produce or are critically subject to dynamic forces including storms giving rise to wind and wave-induced vibration and shock, and earthquakes. Government can be included either as a consumer or where public safety and the environment are issues.
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