File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Correction of strain errors induced by small rigid-body motions in electronic speckle pattern interferometry measurement

TitleCorrection of strain errors induced by small rigid-body motions in electronic speckle pattern interferometry measurement
Authors
KeywordsESPI
Deformation measurement
Rigid-body motions
Strain errors
Correction procedure
Issue Date2013
PublisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.asp
Citation
HKIE Transactions, 2013, v. 20 n. 1, p. 2-11 How to Cite?
AbstractElectronic speckle pattern interferometry (ESPI) can provide non-contact, high-precision, and full-field displacement measurement. This technique is particularly useful for determining deformations on objects with high strain gradients and complex shapes. However, small rigid-body movements of the object being measured can spoil the accuracy of the ESPI measurement and cause dramatic strain errors. Based on the theory of geometric optics, formulae for evaluating the theoretical strain errors caused by different modes of rigid-body motion were explicitly derived. The proposed formulae were validated by comparing the theoretical strain errors generated from a set of known rigid-body motions with the strains obtained by ESPI. The experimental results agreed well with the theoretical results. The results further revealed that the out-of-plane rigid-body motion had the strongest influence on the strain errors among the rigid-body movements considered. An out-of-plane movement of 0.01 mm could generate a strain error of approximately 40 μ ϵ. Finally, a correction procedure to eliminate the strain errors has been proposed. The effectiveness of the procedure was demonstrated with a four-point bending test on a concrete beam. This study on the quantitative evaluation and correction of strain errors due to various rigid-body movements is very useful for the practical applications of the ESPI technique in deformation measurement.
Persistent Identifierhttp://hdl.handle.net/10722/163829
ISSN
2015 SCImago Journal Rankings: 0.145

 

DC FieldValueLanguage
dc.contributor.authorChen, HHen_US
dc.contributor.authorSu, RKLen_US
dc.contributor.authorKwan, AKHen_US
dc.contributor.authorFok, ASLen_US
dc.date.accessioned2012-09-20T07:52:24Z-
dc.date.available2012-09-20T07:52:24Z-
dc.date.issued2013en_US
dc.identifier.citationHKIE Transactions, 2013, v. 20 n. 1, p. 2-11en_US
dc.identifier.issn1023-697X-
dc.identifier.urihttp://hdl.handle.net/10722/163829-
dc.description.abstractElectronic speckle pattern interferometry (ESPI) can provide non-contact, high-precision, and full-field displacement measurement. This technique is particularly useful for determining deformations on objects with high strain gradients and complex shapes. However, small rigid-body movements of the object being measured can spoil the accuracy of the ESPI measurement and cause dramatic strain errors. Based on the theory of geometric optics, formulae for evaluating the theoretical strain errors caused by different modes of rigid-body motion were explicitly derived. The proposed formulae were validated by comparing the theoretical strain errors generated from a set of known rigid-body motions with the strains obtained by ESPI. The experimental results agreed well with the theoretical results. The results further revealed that the out-of-plane rigid-body motion had the strongest influence on the strain errors among the rigid-body movements considered. An out-of-plane movement of 0.01 mm could generate a strain error of approximately 40 μ ϵ. Finally, a correction procedure to eliminate the strain errors has been proposed. The effectiveness of the procedure was demonstrated with a four-point bending test on a concrete beam. This study on the quantitative evaluation and correction of strain errors due to various rigid-body movements is very useful for the practical applications of the ESPI technique in deformation measurement.-
dc.languageengen_US
dc.publisherHong Kong Institution of Engineers. The Journal's web site is located at http://www.hkie.org.hk/html/publications/transactions/index.asp-
dc.relation.ispartofHKIE Transactionsen_US
dc.subjectESPI-
dc.subjectDeformation measurement-
dc.subjectRigid-body motions-
dc.subjectStrain errors-
dc.subjectCorrection procedure-
dc.titleCorrection of strain errors induced by small rigid-body motions in electronic speckle pattern interferometry measurementen_US
dc.typeArticleen_US
dc.identifier.emailSu, RKL: klsu@hkucc.hku.hken_US
dc.identifier.emailKwan, AKH: khkwan@hkucc.hku.hken_US
dc.identifier.authoritySu, RKL=rp00072en_US
dc.identifier.authorityKwan, AKH=rp00127en_US
dc.identifier.doi10.1080/1023697X.2013.785073-
dc.identifier.hkuros206101en_US
dc.identifier.hkuros216949-
dc.identifier.volume20-
dc.identifier.issue1-
dc.identifier.spage2-
dc.identifier.epage11-
dc.publisher.placeHong Kong-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats