Foolproof Methods for Frequency Response Measurements,
UNITED KINGDOM ATOMIC ENERGY AUTHORITY LONDON (ENGLAND)
Pagination or Media Count:
It is the objective of this paper to present three techniques which greatly enhance the accuracy and precision of structural vibration measurements. The measurement techniques considered below all relate to the frequency response function or transfer function which express the steady state response of a structure to a harmonic excitation. Three problems which cause significant errors in the measurement of frequency response functions are Nonlinearities and Noise Errors due to electrodynamic shakers and Interpretation and model fitting of frequency response functions. Techniques for overcoming these problems are presented below.