Due to increasing production growth and consequently more complicated quality control it is reasonable to improve quality control methods. Analysing dynamic response by electrical or mechanical excitation methods increases the reliability of finding faults in products.
Section 2 presents the basics of LabVIEW program, used for generating, acquiring electric signals and later data processing. Section 3 presents the basic theory of mechanic oscillations of systems with one degree of freedom. Section 4 presents the theory of signal acquisition and signal processing.
Section 5 presents the experimental work, where a steel beam and a bolt-jointed steel block are researched under sine-sweep excitation. The results are presented in section 6 where the impact of bolt fixation-toque on the natural dynamics is presented.