Study of stress distribution of cracked steel plate with single sided CFRP material patching

Angus C C Lam, J. J Roger Cheng, G. D. Kennedy, Chi Ho Michael Yam

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In a cracked element, all stresses must flow around the crack, inducing high stress concentrations at the crack tip that are responsible for crack propagation. As the development and application of fiber reinforced composite materials to different engineering structures are increasing gradually nowadays, composite fiber patching techniques are being considered as alternatives to traditional methods of strengthening and fatigue crack repair in steel structures. An experimental program was conducted to study the stress distribution in a patched element, and the effect of varying patch dimensions and stiffness on that stress distribution. Test results showed that single sided patching decreases crack tip strains significantly in the patched face, and increases them in the unpatched face. Finite element analysis of the test specimens were carried out and compared with the test data. The finite element results showed that the stress intensity factor of cracked steel plates with CFRP patching were reduced significantly.
Original languageEnglish
Title of host publicationProceedings of the 3rd International Conference on Bridge Maintenance, Safety and Management - Bridge Maintenance, Safety, Management, Life-Cycle Performane and Cost
Pages1033-1034
Number of pages2
Publication statusPublished - 1 Dec 2006
Event3rd International Conference on Bridge Maintenance, Safety and Management - Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost - Porto, Portugal
Duration: 16 Jul 200619 Jul 2006

Conference

Conference3rd International Conference on Bridge Maintenance, Safety and Management - Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost
Country/TerritoryPortugal
CityPorto
Period16/07/0619/07/06

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

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