CLOSURE EFFECTS ON FATIGUE CRACK DETECTION

An experimental study of crack closure and its effects on the vibration of a simple beam shows that both frequency and damping changes caused by the crack are influenced significantly, to the point of being obscured in some cases. The nonlinearity induced by crack closure is also explored. The results will be of value in the further development of models to detect crack damage in structures as well as in modeling crack closure and the mechanism of damping at a crack.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Zhang, Wenfen
  • Testa, R B
• Publication Date: 1999-10

Language

• English

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 1125-32
• Serial:
  • Journal of Engineering Mechanics
  • Volume: 125
  • Issue Number: 10
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Cracking; Damping (Physics); Detection and identification; Dynamic tests; Experiments; Fatigue (Mechanics); Static tests; T beams; Vibration
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00770143
• Record Type: Publication
• Contract Numbers: CMS 9520277, BCS 9025010, F49620-01-C-0019
• Files: TRIS
• Created Date: Oct 10 1999 12:00AM