Measuring dynamic stiffness of insulation material, applies excitation at controlled amplitude to determine resonant frequency using vibration sensor

摘要

The panel (3) rests freely on the sample body (2). The inertial force exciter is resiliently coupled to the panel. The controlled force (9) is fed back via a measurement system (8) and controller. Its application is controlled to a given level (11). The resonant frequency of the sample body is measured using a separate vibration sensor (5).