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

Rowberry, Matthew David; Kriegner, D.; Holý, V.; Frontera, C.; Llull, M.; Olejník, Kamil; Martí, Xavier

doi:https://dx.doi.org/10.1016/j.measurement.2016.05.048

Number of the records: 1

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

1.

SYSNO ASEP	0466655
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	The instrumental resolution of a moire extensometer in light of its recent automatisation
Author(s)	Rowberry, Matthew David (USMH-B)_{RID, ORCID, SAI} Kriegner, D. (CZ) Holý, V. (CZ) Frontera, C. (ES) Llull, M. (ES) Olejník, Kamil (FZU-D)_{RID, ORCID} Martí, Xavier (FZU-D)_{RID, ORCID}
Source Title	Measurement. - : Elsevier - ISSN 0263-2241 Roč. 91, SEP (2016), s. 258-265
Number of pages	8 s.
Publication form	Print - P
Language	eng - English
Country	GB - United Kingdom
Keywords	geological discontinuity monitoring ; mechanical extensometer ; moire patterns ; instrumental resolution
Subject RIV	JB - Sensors, Measurment, Regulation
Subject RIV - cooperation	Institute of Physics - Solid Matter Physics ; Magnetism
R&D Projects	LM2010008 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	USMH-B - RVO:67985891 ; FZU-D - RVO:68378271
UT WOS	000379507400031
EID SCOPUS	84970024659
DOI	https://doi.org/10.1016/j.measurement.2016.05.048
Annotation	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.
Workplace	Institute of Rock Structure and Mechanics
Contact	Iva Švihálková, svihalkova@irsm.cas.cz, Tel.: 266 009 216
Year of Publishing	2017

Name and Surname

Pluháček, T.

Country

CZ - Czech Republic

Catal.org.

CAV

References

(3) - Článek v odborném časopise

Number of the records: 1