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STUDY OF SHOCK MEASUREMENTS USING HOMODYNE AND HETERODYNE LASER INTERFEROMETERS

H. Nozato, W. Kokuyama, A. Oota
  • Abstract:
    A comparison measurement using homodyne and commercial heterodyne laser interferometers was investigated in the primary shock facility of NMIJ. Each derived shock waveform was calculated by applying a two stage differentiation process with 4th order Butterworth lowpass filter. As results, the time difference and the deviation between peak accelerations for two amplitude levels were respectively less than 1 µs and quite less than 0.01 %.
  • Keywords:
    shock, accelerometer, shock calibration, acceleration measurement, homodyne laser interferometer, heterodyne laser interferometer, laser Doppler vibrometer
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  • DOI:
    _unreg_tc22-2014.007

Event details:

  • IMEKO TC:
    TC22
  • Event name:
    TC22 Conference 2014
  • Title:

    3rd Conference on Vibration Measurement (together with 22nd TC3 Conference on the Measurement of Force, Mass and Torque and 12th TC5 Conference on the Measurement of Hardness)

  • Place:
    Cape Town, SOUTH AFRICA
  • Time:
    03 February 2014 - 06 February 2014