Amplitude Distribution of Emission Wave for Cracking Process

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 X 250 X 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.

The durability of concrete containing recycled tyres as a partial replacement of fine aggregate

“…This is done to make sure that the rubber concrete is safe for use in the construction industry. Concrete is an important building material in the production of building structures [11]. Concrete is widely used because it has durability and optimum compressive strength.…”

Existing Noise Level at Railway Stations in Malaysia

“…To reduce this noise, different measures could be implemented in different places such as at the source, between the source and the receiver and at the receiver [12] [26]. Rail transport which is ecologically and economically and significantly accepted, faces the demand to guarantee on such values of noise emission that do not exceed the permitted noise limits monitored in tracks for different speed zones which standard, speed and high speed track [13].…”

A Preliminary Study Application Clustering System in Acoustic Emission Monitoring

“…The Acoustic Emission technique has been widely used in the field civil engineering for structural health monitoring (SHM) [1][2][3][4][5][6]. Structural health monitoring (SHM) refers to the process of implementation on early damage detection of incipient defects.…”

“…Many researchers have developed techniques to find out the damage classification by means of AE signal parameters [18][19][20][21]. The AE parameters are using to distinguish the type and stage of failure and the integrity of the materials [22][23][24].…”