Crack classification in concrete beams using AE parameters

Global Congress on Construction, Material and Structural Engineering 2017

材料科学;土木建筑工程

Bahari, N.A.A.S.^1 ; Shahidan, S.^1 ; Abdullah, S.R.^1 ; Ali, N.^1 ; Mohd Zuki, S.S.^1 ; Ibrahim, M.H.W.^1 ; Rahim, M.A.^2

Jamilus Research Center, Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Batu Pahat

86400, Malaysia^1

School of Environmental Engineering, University Malaysia Perlis, Perlis, Arau

02600, Malaysia^2

关键词: Acoustic emission techniques;    Average frequency;    Crack classification;    Effective tool;    Monitoring system;    Reinforced concrete beams;    Shear movement;    Universal testing machines;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/271/1/012090/pdf
DOI  :  10.1088/1757-899X/271/1/012090

来源: IOP

【 摘 要 】

The acoustic emission (AE) technique is an effective tool for the evaluation of crack growth. The aim of this study is to evaluate crack classification in reinforced concrete beams using statistical analysis. AE has been applied for the early monitoring of reinforced concrete structures using AE parameters such as average frequency, rise time, amplitude counts and duration. This experimental study focuses on the utilisation of this method in evaluating reinforced concrete beams. Beam specimens measuring 150 mm × 250 mm × 1200 mm were tested using a three-point load flexural test using Universal Testing Machines (UTM) together with an AE monitoring system. The results indicated that RA value can be used to determine the relationship between tensile crack and shear movement in reinforced concrete beams.