Abstract
Acoustic emission technique is a method of assessment for structural health monitoring system. This technique is an effective tool for the evaluation of any system without destroying the material conditions. It enables early crack detections and has very high sensitivity to crack growth. The crack patterns in concrete beam have been identified according to the type of cracking process and the crack classifications using the AE data parameters are mainly based on the AE amplitude, rise time, and average frequency. These data parameters have been analysed using statistical methods of b-value analysis. This research paper will mainly focus on the utilization of statistical b-value analysis in evaluating the emission amplitude distribution of concrete beams. The beam specimens (150 × 250 × 1900) mm were prepared in the laboratory system and tested with the four point bending test using cyclic loading together with acoustic emission monitoring system. The results showed that this statistical analysis is promising in determining the cracking process in concrete beams.
Highlights
Structural concrete bridges are highly at risk in terms of structural conditions due to over loading compared to other structures
The objective of this paper is to explore the scaling of the AE amplitude distribution waves generated during the cracking process based on the loading system
This statistical method is widely used in seismology to characterize earthquake populations
Summary
Structural concrete bridges are highly at risk in terms of structural conditions due to over loading compared to other structures. The most common defects found on superstructure concrete bridges are micro-cracking and macro-cracking [1,2,3] These types of damage are becoming serious and have caused great concern among the public [4]. The AE technique evaluation method has been found to be more effective and accurate for developing damage grading systems This system is very useful and significant for assessing concrete structures such as bridges for daily use and deterioration in buildings to classify the differences of class condition in concrete structures [3,4,5]. The objective of this paper is to explore the scaling of the AE amplitude distribution waves generated during the cracking process based on the loading system
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