Title :
An investigation on acoustic wave velocity of reinforced concrete beam in-plane source
Author :
Nor, N.M. ; Bunnori, N.M. ; Ibrahim, A. ; Shahidan, S. ; Saliah, S.N.M.
Author_Institution :
Fac. of Civil Eng., Univ. Teknol. MARA (UiTM), Permatang Pauh, Malaysia
Abstract :
This paper is presented an investigation on acoustic wave velocity of reinforced concrete beam in-plane source based on AE waveform analysis. Pencil Lead Fracture (PLF) was used to generate sudden release of stress at selected source location. Three threshold levels were considered for determining wave velocity in RC beam. It can be concluded that the wave velocity was dependent to the threshold levels, high threshold level would prolong the TOA of the wave and the velocity would be reduced; which the wave travels in the RC beam at velocities in the range 2410 m/s to 4000 m/s. The wave velocity also decreased as the distance from individual sensor to synchronize sensors increased.
Keywords :
acoustic wave velocity; beams (structures); reinforced concrete; structural acoustics; structural engineering; AE waveform analysis; RC beams; acoustic wave velocity; pencil lead fracture; reinforced concrete beam inplane source; Acoustic beams; Acoustic emission; Acoustic waves; Concrete; Position measurement; Sensitivity; AE source; acoustic emission; in-plane; wave velocity;
Conference_Titel :
Signal Processing and its Applications (CSPA), 2011 IEEE 7th International Colloquium on
Conference_Location :
Penang
Print_ISBN :
978-1-61284-414-5
DOI :
10.1109/CSPA.2011.5759835
