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Acoustic Emission Characterisation of Reinforced Concrete Beam at an Initiation Stage of Fatigue Damage

Nor, N. M. / Saliah, S. N. Mat / Tahir, M. S. / Yahya, N. A.

The accumulation of fatigue loading is a significantly perilous state to the reinforced concrete structure on the formation of damage. It starts with a small crack to concrete and getting bigger as the load accumulates. Hence the monitoring of the reinforced concrete structure under fatigue loading is vital. The monitoring can be done using acoustic emission technique. This paper presents the investigation of AE activities at an initial stage of fatigue life of RC beam subjected to fatigue loading. The maximum and minimum fatigue loadings were based on the ultimate load of the average five reinforced concrete beam under static loading. Hence, the maximum fatigue loading is 127 kN, and the minimum fatigue loading is 32 kN. The acoustic emission data collected at Channel 1 as well as signal strength, intensity analysis, severity index and historical index were analysed and discussed. It was found that acoustic emission is a good approach to predict the occurrence of crack at an initial stage of fatigue damage.

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Acoustic Emission Characterisation of Reinforced Concrete Beam at an Initiation Stage of Fatigue Damage

Nor, N. M. / Saliah, S. N. Mat / Tahir, M. S. / Yahya, N. A.

The accumulation of fatigue loading is a significantly perilous state to the reinforced concrete structure on the formation of damage. It starts with a small crack to concrete and getting bigger as the load accumulates. Hence the monitoring of the reinforced concrete structure under fatigue loading is vital. The monitoring can be done using acoustic emission technique. This paper presents the investigation of AE activities at an initial stage of fatigue life of RC beam subjected to fatigue loading. The maximum and minimum fatigue loadings were based on the ultimate load of the average five reinforced concrete beam under static loading. Hence, the maximum fatigue loading is 127 kN, and the minimum fatigue loading is 32 kN. The acoustic emission data collected at Channel 1 as well as signal strength, intensity analysis, severity index and historical index were analysed and discussed. It was found that acoustic emission is a good approach to predict the occurrence of crack at an initial stage of fatigue damage.

Acoustic Emission Characterisation of Reinforced Concrete Beam at an Initiation Stage of Fatigue Damage

Nor, N. M. / Saliah, S. N. Mat / Tahir, M. S. / Yahya, N. A.

The accumulation of fatigue loading is a significantly perilous state to the reinforced concrete structure on the formation of damage. It starts with a small crack to concrete and getting bigger as the load accumulates. Hence the monitoring of the reinforced concrete structure under fatigue loading is vital. The monitoring can be done using acoustic emission technique. This paper presents the investigation of AE activities at an initial stage of fatigue life of RC beam subjected to fatigue loading. The maximum and minimum fatigue loadings were based on the ultimate load of the average five reinforced concrete beam under static loading. Hence, the maximum fatigue loading is 127 kN, and the minimum fatigue loading is 32 kN. The acoustic emission data collected at Channel 1 as well as signal strength, intensity analysis, severity index and historical index were analysed and discussed. It was found that acoustic emission is a good approach to predict the occurrence of crack at an initial stage of fatigue damage.

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Title:

Acoustic Emission Characterisation of Reinforced Concrete Beam at an Initiation Stage of Fatigue Damage

Additional title:

Structural Integrity

Contributors:

Abdullah, Shahrum (editor) / Karam Singh, Salvinder Singh (editor) / Md Nor, Noorsuhada (editor) / Nor, N. M. (author) / Saliah, S. N. Mat (author) / Tahir, M. S. (author) / Yahya, N. A. (author)

Conference:

Symposium on Damage Mechanism in Materials and Structures ; 2020 ; Penang, Malaysia

Published in:

Structural Integrity Cases in Mechanical and Civil Engineering ; Chapter: 24 ; 327-338

Structural Integrity ; 23

Publication date:

2022-01-24

Size:

12 pages

ISBN:

978-3-030-85646-5 , 978-3-030-85645-8

ISSN:

2522-5618 , 2522-560X

DOI:

https://doi.org/10.1007/978-3-030-85646-5_24

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Acoustic emission , Severity index , Historical index , Intensity analysis , Fatigue Engineering , Solid Mechanics , Structural Materials , Mechanical Engineering

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