| 摘要 |
The device has a sensor (2) for detecting vibrations i.e. impact sound, in a component (1). An evaluation unit (3) evaluates the vibrations, and detects a vibration spectrum (5) as a function of time over a detection period, where the vibration spectrum is generated in reaction to impact with an energy impulse and/or static load e.g. bending-, torsion- and compression loads, in the component. The unit compares temporal distribution of the spectrum with a reference spectrum (6). An actuator (4) impinges the component with the energy impulse in form of acoustic and/or mechanical impulses. The actuator is designed as a piezo sound generator. An independent claim is also included for a method for testing a component for damages. |
