METHOD FOR EVALUATING THE DECAY BEHAVIOR OF A TEST OBJECT

摘要

The invention relates to a simple system for the automatic signal recording and for evaluating the decay behavior of a test object following a mechanical impulse excitation. The system comprises coupling means (3) to be coupled to sensors (2, 13) which detect oscillations of the test object (24) and which convert the detected oscillations to analog oscillatory impulses. The system is further provided with an amplifier (5) for adapting the amplitude of the analog oscillatory impulses, a low-pass filter (6) for avoiding aliasing effects, an analog to digital converter (7) for converting the analog oscillatory impulses to digital data and an arithmetic unit (8) for oscillation analysis and for evaluation of the data. The coupling means (3), the amplifier (5), the low-pass filter (6), the analog to digital converter (7) and the arithmetic unit (8) are combined in a compact mobile unit (1), connected in series to one another.