Experimental study of acoustic emission characteristics of underwater concrete structures

Author

Jiang, A-lan ; Zhao, Ying-Hua ; ZHANG, Li-wei

Author_Institution

Transp. Eng. Post-doctoral R&D Base, Dalian Maritime Univ., Dalian

fYear

2008

fDate

5-8 Dec. 2008

Firstpage

252

Lastpage

257

Abstract

Acoustic emission testing technique is a dynamic testing technology. In this paper, the relationship between the cumulative energy of acoustic emission and lower cycle reversal loads is studied based on results of the experiments on underwater concrete columns, and waveform acoustic emission signal of different destruction states is picked up. Spectrum analysis is carried out, the results of which are compared with those of parametric analysis. The comparison shows that the waveform acoustic emission signal can be used to disclose the characteristics of the concrete materials under loading in real time.

Keywords

acoustic emission; acoustic emission testing; concrete; underwater acoustic propagation; acoustic emission cumulative energy; acoustic emission testing; cycle reversal loads; dynamic testing technology; parametric analysis; spectrum analysis; underwater concrete columns; Acoustic emission; Acoustic materials; Acoustic testing; Acoustical engineering; Building materials; Composite materials; Concrete; Corrosion; Monitoring; Stress; AE event energy; Underwater concrete; acoustic emission; spectrum analysis; waveform;

fLanguage

English

Publisher

ieee

Conference_Titel

Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-2891-5

Type

conf

DOI

10.1109/SPAWDA.2008.4775787

Filename

4775787