Fatigue damage assessment of reinforced concrete beam using average frequency and rise angle value of acoustic emission signal
International Journal of Structural Integrity
ISSN: 1757-9864
Article publication date: 4 May 2020
Issue publication date: 24 July 2020
Abstract
Purpose
In civil engineering construction, the reinforced concrete (RC) structure is generally used and exposed to fatigue loading as it is in service. The assessment of the RC structure is required to maintain the service life of the structure.
Design/methodology/approach
This paper presents the behaviour of RC beam specimens under increasing maximum fatigue loading until failure. Simultaneously the acoustic emission (AE) was recorded. Twelve phases of maximum fatigue loading at Stage 1 and Stage 2 were applied to the beam with the frequency of 1 Hz and 5,000 load cycles were applied for each load phase. Two AE parameters were analysed and discussed, namely average frequency and rise angle value at CH4 and CH5.
Findings
The results found that the load and crack are closely related to the AE activities in the RC beam specimen when subjected to increasing fatigue loading.
Originality/value
To investigate the AE characteristics of RC beam specimens subjected to 12 phases of maximum fatigue loading using the average frequency and rise angle value.
Keywords
Acknowledgements
The authors thank the Faculty of Civil Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang for allocation of materials for this research. The authors also thank Mr. Fakhrul Nazhi Hanaffi (Teraju Construction Sdn. Bhd., Dengkil) for supplying the RC beams at no cost.
Citation
Md Nor, N., Mat Saliah, S.N. and Hashim, K.A. (2020), "Fatigue damage assessment of reinforced concrete beam using average frequency and rise angle value of acoustic emission signal", International Journal of Structural Integrity, Vol. 11 No. 4, pp. 633-643. https://doi.org/10.1108/IJSI-10-2019-0115
Publisher
:Emerald Publishing Limited
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