GB/T 20485.32-2021
Methods for the calibration of vibration and shock transducers—Part 32: Resonance testing—Testing the frequency and the phase response of accelerometers by means of shock excitation (English Version)

Standard No.

GB/T 20485.32-2021

Language

Chinese, Available in English version

Release Date

2021

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 20485.32-2021

Scope

This part of GB/T 20485 specifies in detail the instruments and procedures for testing the frequency and phase response of accelerometers with shock excitation. This section applies to piezoelectric, piezoresistive and variable capacitance accelerometers with a damping ratio of less than 1, with a frequency range up to 150kHz. The accelerometer under test requiring this method to obtain frequency and phase response shall have good mechanical mounting characteristics as stated in ISO 5348, and the mass of the reference impact ball shall exceed at least three times the mass of the accelerometer under test. The phase response of the accelerometer under test obtained by this method assumes zero phase shift between the input and output signals of the accelerometer at a frequency of 0 Hz. Note 1: The user may notice that the same accelerometer is used in the field, and its frequency and phase response may vary, depending on the quality, consistency and installation method of the test structure. This method can only qualitatively evaluate the frequency and phase response of the accelerometer. Note 2: The user may be less concerned with obtaining better resolution of the initial portion of the frequency and phase response of the measured accelerometer than with adequate dynamic range characteristics. The greatest benefit of obtaining the frequency and phase response of the accelerometer in this way is to obtain the optimal number of spectral lines in the initial part of the above characteristics.

GB/T 20485.32-2021 Referenced Document

• ISO 2041 Mechanical vibration, shock and condition monitoring - Vocabulary
• ISO 5348 Mechanical vibration and shock - Mechanical mounting of accelerometers

GB/T 20485.32-2021 history

• 2021 GB/T 20485.32-2021 Methods for the calibration of vibration and shock transducers—Part 32: Resonance testing—Testing the frequency and the phase response of accelerometers by means of shock excitation

GB/T 20485.32-2021 -All Parts