Frequency characteristic of the acoustic emission signal in concrete under compressive loading
Abstract
Acoustic Emission measurements are very useful in the investigation of changes taking place in a composite during compressive tests. Among the AE intensity measurements (i.e. counts rate, root mean square, etc.) also the frequency analysis of the AE signal seems to be the useful method. In this paper the analysis of the AE signal characteristic for six different concrete compositions, also for those with silica fumes, is presented. Acoustic Emission signals were measured during quasi-axial compressive tests. The main aim of presented investigations was to demonstrate the spectral patterns of the AE waveforms generated by different concrete structures under compressive loading.References
[1] J.-M. BERTHELOT et al., Frequency analysis of Acoustic Emission signals in concrete, Journal of Acoustic Emission, 11, 1, pp. 11-18 (1993).
[2] J. HERTZ, A. KROGH, R.G. PALMER, Introduction to the theory of neural computation [in Polish], WNT, Warszawa 1995.
[3] J. HOŁA, A. MOCZKO, Analysis of destructive processes chosen concrete structures with an application of ultrasound and Acoustic Emission methods [in Polish], PhD Thesis, Institute of Civil Engineering, Wrocław University of Technology, Wrocław 1984.
[2] J. HERTZ, A. KROGH, R.G. PALMER, Introduction to the theory of neural computation [in Polish], WNT, Warszawa 1995.
[3] J. HOŁA, A. MOCZKO, Analysis of destructive processes chosen concrete structures with an application of ultrasound and Acoustic Emission methods [in Polish], PhD Thesis, Institute of Civil Engineering, Wrocław University of Technology, Wrocław 1984.
