Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Smart Structures and Systems Volume 16, Number 1, July 2015 , pages 67-79 DOI: https://doi.org/10.12989/sss.2015.16.1.067 |
|
|
|
Experimental study on acoustic emission characteristics of reinforced concrete components |
||
Aijun Gu, Ying Luo and Baiqiang Xu
|
||
| Abstract | ||
| Acoustic emission analysis is an effective technique for monitoring the evolution of damage in a structure. An experimental analysis on a set of reinforced concrete beams under flexural loading was carried out. A mixed AE analysis method which used both parameter-based and signal-based techniques was presented to characterize and identify different failure mechanisms of damage, where the signal-based analysis was performed by using the Hilbert-Huang transform. The maximum instantaneous energy of typical damage events and the corresponding frequency characteristics were established, which provided a quantitative assessment of reinforced concrete beam using AE technique. In the bending tests, a \"pitch-catch\" system was mounted on a steel bar to assess bonding state of the steel bar in concrete. To better understand the AE behavior of bond-slip damage between steel bar and concrete, a special bond-slip test called pullout test was also performed. The results provided the basis of quantitative AE to identify both failure mechanisms and level of damages of civil engineering structures. | ||
| Key Words | ||
| acoustic emission; reinforced concrete beam; four-point bending; Hilbert-Huang transform; bond-slip damage | ||
| Address | ||
| Aijun Gu: Key Laboratory for Mechanical Structure Damage Detection Technology, P.O. Box 84, Jiangsu University, Zhenjiang, China; Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, China; School of Hydraulic, Energy and Power Engineering, Yangzhou University, Yangzhou, China Ying Luo: Key Laboratory for Mechanical Structure Damage Detection Technology, P.O. Box 84, Jiangsu University, Zhenjiang, China; Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, China; Baiqiang Xu: Faculty of Science, Jiangsu University, Zhenjiang, China | ||