EXPERIMENTAL DETERMINATION OF THE INFLUENCE OF THE CROSS-SECTION SIZE IN THE DYNAMIC BEHAVIOUR OF CRACKED BEAMS

Modal analysis techniques are currently being investigated as nondestructive procedures for the detection of cracks in structural components, but these techniques are still far from being fully understood. Although investigators are interested in this field, an extensive search of the literature shows that there is very little information on experimental results. This situation is mainly due to the fact that accurate experimental data can only be obtained through time-consuming and carefully performed tests. On the other hand, experimental data is essential for a better understanding of the phenomena and for the validation of theoretical models. The authors therefore decided to perform an extensive and carefully programmed set of tests. In this paper, they present and discuss experimental results obtained from the dynamic analysis of straight beams with square cross-sections, under free-free conditions. Tests were carried out using beams with different area cross-sections. The beams under analysis had real cracks produced under carefully controlled three-point-bending fatigue techniques. The influence of the cross-section size is analyzed.

Media Info

  • Features: References;
  • Pagination: 10p.

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Filing Info

  • Accession Number: 00661959
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM