Identifying subsurface detachment defects by acoustic tracing

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F13%3A00396275" target="_blank" >RIV/68378297:_____/13:00396275 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ndteint.2013.02.002" target="_blank" >http://dx.doi.org/10.1016/j.ndteint.2013.02.002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ndteint.2013.02.002" target="_blank" >10.1016/j.ndteint.2013.02.002</a>

Result language
angličtina
Original language name
Identifying subsurface detachment defects by acoustic tracing
Original language description
This paper presents a newly developed acoustic tracing method for a non-invasive survey of detachment defects of rendered masonry. The method analyses acoustic signals generated by tapping the surface in densely located points, which are registered together with the geometrical coordinates by means of a video camera. FFT analysis enabled a comparison to be made between the audible wall response and formalized parameters of the sound samples, i.e. the excitation band and the dominant frequency of the spectrum. It was concluded that the audible spectrum for non-detached parts includes several narrow band components, whilst the detached areas respond in a wider frequency band.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JN - Civil engineering
OECD FORD branch
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Project
<a href="/en/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Cumulative time dependent processes in building materials and structures</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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