DYNAMIC BEHAVIOUR OF A CRACKED CANTILEVER BEAM

The influence of a transverse surface crack on the dynamic behaviour of a cantilever beam is studied. Analytical and experimental investigations provide a link between the change in natural frequencies of vibration and in mechanical impedance to the location and size of the crack for flexural vibrations. It is shown that the mechanical impedance of the beam changes substantially due to the presence of the crack and can be used as an additional defect information carrier. The results have been used to propose an improved method of non-destructive testing for simple beam structures. The method is based on the combined examination of the change in natural frequencies and in mechanical impedance and allows an estimation of both location and size of the crack. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0003682X
• Corporate Authors:

  Elsevier

  The Boulevard, Langford Lane
  Kidlington, Oxford  United Kingdom  OX5 1GB
• Authors:
  • BAMNIOS, G
  • TROCHIDES, A
• Publication Date: 1995

Language

• English

Media Info

• Features: References;
• Pagination: p. 97-112
• Serial:
  • Applied Acoustics
  • Volume: 45
  • Issue Number: 2
  • Publisher: Elsevier
  • ISSN: 0003-682X
  • Serial URL: http://www.sciencedirect.com/science/journal/0003682X

Subject/Index Terms

• TRT Terms: Beams; Cantilevers; Cracking; Nondestructive tests; Structures; Test procedures
• ITRD Terms: 3472: Beam; 3450: Cantilever; 5211: Cracking; 3355: Engineering structure; 6216: Non destructive testing; 6288: Test method
• Subject Areas: Bridges and other structures;

Filing Info

• Accession Number: 00682341
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Aug 17 1995 12:00AM