| Résumé | The effect of mass loading is an important phenomenon for the calibration of back-to-back accelerometers. When a transfer standard back-to-back accelerometer that has been calibrated for a given mass load is used to calibrate an accelerometer whose mass is different, an error is introduced. For this reason, accelerometer manufactures may supply correction curves for the mass loading effect or specify a maximum sensitivity change due to mass loads. These data, however, often have limited applicability. In this paper, the effect of mass loading on the shock sensitivity of some transfer standard accelerometers is presented. The shock-shaped excitation varied in amplitude from 5000 m/s2 to 10000 m/s2, for different mass loads from 37 g to 200 g. It has been found that the shock sensitivity of the accelerometers investigated decreases linearly as the load mass increases at a rate of about 0.007 %/g. This rate of decrease in shock sensitivity is almost constant for different shock accelerations. |
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