This work describes a new procedure for detecting the presence, size and position of structural defects in Hopkinson bars. The experimental set-up is based on the acquisition of acoustic vibrations by means of a capacitive sensor. The technique for data processing is mainly based on the spectrum of the power cepstrum. The procedure allows the detection of a defect of only 5% of the bar cross-section.
Defects detection using the spectrum of power cepstrum
BASSO, ROBERTO;FANTI, GIULIO
1999
Abstract
This work describes a new procedure for detecting the presence, size and position of structural defects in Hopkinson bars. The experimental set-up is based on the acquisition of acoustic vibrations by means of a capacitive sensor. The technique for data processing is mainly based on the spectrum of the power cepstrum. The procedure allows the detection of a defect of only 5% of the bar cross-section.File in questo prodotto:
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