Effect of accelerometer mass on the flexural motion of plates

When the flexural acceleration of a plate is measured by an accelerometer, the mass of the accelerometer tends to reduce the magnitude of the acceleration.This study establishes a simple analytical relation between the accelerometer mass and the corresponding reduction of acceleration. This has been done by studying an idealized diffraction problem for the plate flexural waves.The complex frequency response depends upon the accelerometer mass, the frequency of the flexural wave, the plate thickness and the material parameters of the plate.A numerical filtering method is used to bring an experimental result and a corresponding numerical prediction closer together.