Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/10756
Title: Delamination effects on cracked steel members reinforced by prestressed composite patch
Authors: Colombi, P. 
Bassetti, A. 
Nussbaumer, A. 
Keywords: Composite patch reinforcement; Debond crack; Strain energy release rate
Issue Date: 19-Nov-2002
Publisher: Elsevier Science
Citation: Theoretical and Applied Fracture Mechanics. 39:1 (2003) 61-71
Abstract: Prestressed composite patch bonded on cracked steel section is a promising technique to reinforce cracked details or to prevent fatigue cracking on steel structural elements. It introduces compressive stresses that produce crack closure effect. Moreover, it modifies the crack geometry by bridging the crack lips and reduces the stress range at crack tip. Fatigue tests were performed on notched steel plate reinforced by CFRP strips as a step toward the validation of crack patching for fatigue life extension of riveted steel bridges. A debond crack in the adhesive–plate interface was observed by optical technique. Debond crack total strain energy release rate is computed by the modified virtual crack closure technique. A parametric analysis is performed in order to investigate the influence of some design parameters such as the composite patch Young’s modulus, the adhesive thickness and the pretension level on the adhesive–plate interface debond.
URI: http://hdl.handle.net/10316/10756
ISSN: 0167-8442
DOI: 10.1016/S0167-8442(02)00138-6
Rights: openAccess
Appears in Collections:FCTUC Eng.Civil - Artigos em Revistas Internacionais

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