A FPGA-PC Based Acoustic Emission System with Logarithmic Preamplifier for Fracture Monitoring

Marek Vondra; Gabriel Cséfalvay; Petr Sedlak

doi:10.4028/www.scientific.net/KEM.592-593.541

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 592-593A FPGA-PC Based Acoustic Emission System with...

A FPGA-PC Based Acoustic Emission System with Logarithmic Preamplifier for Fracture Monitoring

Abstract:

Acoustic emission (AE) is one of the most used nondestructive technique since it offers a great potential due to its ability of quantitative evaluation such as source location and source characterization. A common set of recorded acoustic emission signals has an extraordinarily wide dynamic range. Thus, the input gain of the A/D converter plays a key role due in information loss considering limitation of high signal amplitudes and domination of quantization noise at low levels. The usage of a logarithmic preamplifier extends the dynamic range of conventional A/D converters, thus increases the accuracy and signal-to-noise ratio of weak acoustic emission signals.

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Periodical:

Key Engineering Materials (Volumes 592-593)

Pages:

541-544

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.592-593.541

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Online since:

November 2013

Authors:

Marek Vondra*, Gabriel Cséfalvay, Petr Sedlak

Keywords:

Acoustic Emission (AE), Field-Programmable Gate Array (FPGA), FPGA, Logarithmic Preamplifier

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References

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