The instrumental resolution of a moire extensometer in light of its recent automatisation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00466655" target="_blank" >RIV/68378271:_____/16:00466655 - isvavai.cz</a>
Alternative codes found
RIV/67985891:_____/16:00466655 RIV/00216208:11320/16:10325218
Result on the web
<a href="http://dx.doi.org/10.1016/j.measurement.2016.05.048" target="_blank" >http://dx.doi.org/10.1016/j.measurement.2016.05.048</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.measurement.2016.05.048" target="_blank" >10.1016/j.measurement.2016.05.048</a>

Result language
angličtina
Original language name
The instrumental resolution of a moire extensometer in light of its recent automatisation
Original language description
This paper assesses the instrumental resolution of a mechanical extensometer in light of its recent automatisation. The instrument takes advantage of the moire phenomenon of optical interference to measure angular rotation in two perpendicular planes and displacement in three dimensions. Our assessment systematically defines an analytical solution for the complete interpretation of a generic moire pattern and a set of mathematical approximations for the moire patterns used to measure rotation and displacement. The ultimate sensitivity of the automated instrument is determined on the basis of a generic least square differences fitting procedure while the instrumental resolution is defined on the basis of realistic, rather than optimal, scenarios: the resolution of the rotation measurements are in the order of 8.7 * 10(-5) rad while the resolution of the displacement measurements are better than 5 mu m. This assessment represents the first step towards a global numerical repository for processed data recorded by the automated extensometers.
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
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
<a href="/en/project/LM2010008" target="_blank" >LM2010008: CzechGeo/EPOS ? Distributed system of permanent observatory measurements and temporary monitoring of geophysical fields in the Czech Republic</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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