Delamination of carbon-fiber strengthening layer from concrete beam during deformation (infrared thermography)
Journal Title: Frattura ed Integrità Strutturale - Year 2016, Vol 10, Issue 38
Abstract
Technology of strengthening reinforced concrete structures with composite materials has found wide application. The effectiveness of strengthening of concrete structures with externally bonded reinforcement is supported by a great deal of experimental evidence. However, the problem of serviceability of such structures has not been adequately explored. The present work describes the results of experimental studies on the loadcarrying capacity of concrete beams strengthened with carbon fiber reinforced plastic (CFRP). Special emphasis is placed on studying the debonding of the strengthening layer from the concrete surface and analyzing its influence on the load-carrying capacity of beams. Infrared thermography is used to detect the first signs of debonding and to assess the debond growth rate
Authors and Affiliations
I. Shardakov, A, Shestakov , A. Bykov
A micromechanical approach for the micropolarmodeling of heterogeneous periodic media
Computational homogenization is adopted to assess the homogenized two-dimensional response ofperiodic composite materials where the typical microstructural dimension is not negligible with respect to thestructural...
Analisi dell’anisotropia microstrutturale in materiali compositi rinforzati con fibre corte
La microtomografia con luce di sincrotrone si è rivelata una tecnica particolarmente efficace per l’analisi della struttura risultante dalla distribuzione degli orientamenti assunti dalle fibre di rinforzo di compo...
Estimation of fatigue life of selected construction materials under cyclic loading
In the literature, there are many criteria of multiaxial fatigue. They are based on various assumptions and parameters describing the process of fatigue. Among them, there is a special group of criteria based on...
Analysis of the fatigue strength under two load levels of a stainless steel based on energy dissipation
In this paper the fatigue behaviour of a stainless steel AISI 304L is analysed. In the first part of the work the results obtained under constant amplitude fatigue are presented and synthesised in terms of both stress am...
Mechanism of crack branching in the fatigue crack growth path of 2324-T39 Aluminium alloy
The crack growth behavior in 2324-T39 aluminium alloy was experimentally investigated. Two types of crack branching were observed. The mechanism of an uncommon crack branching which results from the link up o...