STRUCTURAL CRACK DETECTION IN COMPOSITE MATERIALS USING NEURAL NETWORKS
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND MECHANICAL ENGINEERING
Author(s): AHMAD SEDAGHAT , M. EL HAJ ASSAD , MOHAMED GAITH , MOHAMMAD HIYASAT , SADDAM ALKHATIB
Abstract: Online structural health monitoring becomes as a promising tool to ensure of the safety of the structure with low cost, short time and high effectiveness. Existing of crack in the structure makes the structure weaker and unsafe and it may propagate to complete fracture and catastrophic failure. Different methods are developed to predict the location and depth of a crack. In this paper, Artificial Neural Network (ANN) theory is used to predict the generated data for different crack locations and crack depth based on changes in natural frequencies and mode shapes of a healthy structure. The ANSYS software based on finite element (FE) principles is used to generate data for solid or fibre reinforced composite cantilever (and simply supported) beams. Natural frequencies for different important vibration modes are obtained based on linear vibration analysis. The effects of ply orientation, crack location, crack depth and end supports on the natural frequencies and corresponding mode shapes
- Publication Date: 17-Nov-2014
- DOI: 10.15224/978-1-63248-054-5-98
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EXTERNAL STRENGTHENING OF RC CONTINUOUS BEAMS USING FRP PLATES: FINITE ELEMENT MODEL
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL, STRUCTURAL AND MECHANICAL ENGINEERING
Author(s): MOHAMMED A. SAKR , TAREK M.KHALIFA , WALID N.MANSOUR
Abstract: Fiber reinforced polymer (FRP) installation is a very effective way to repair and strengthen structures that have become structurally weak over their life span. This paper presents a simple uniaxial nonlinear finite element model (UNFEM) able to accurately estimate the load-carrying capacity, different failure modes and the interfacial stresses of reinforced concrete (RC) continuous beams flexurally strengthened with externally bonded FRP plates on the upper and lower fibers. Results of the proposed finite element(FE) model are verified by comparing them with experimental measurements available in the literature. The agreement between numerical and experimental results is very good.This simple UNFEM is able to help design Engineers to model their strengthened structures and solve their problems
- Publication Date: 17-Nov-2014
- DOI: 10.15224/978-1-63248-054-5-101
- Views: 0
- Downloads: 0