The University of Southampton
University of Southampton Institutional Repository

Triaxial ultra-small strain measurements using laser interferometry

Triaxial ultra-small strain measurements using laser interferometry
Triaxial ultra-small strain measurements using laser interferometry
This paper describes a prototype device for ultra-small strain triaxial stiffness measurement, using laser-optic interferometry, and based upon the Fabry-Perot principle. The results of a test on an intact specimen of weak rock are presented, and comparisons made between measurements using this device and a submersible LVDT system. The displacement resolution of the interferometer was 0.0006 m and the strain resolution 8 × 10%. It is shown that the measurement uncertainty of the instrument was low compared with the magnitude of the displacements measured and in addition it was sufficiently accurate to detect the linear stress-strain behavior of a weak rock.
triaxial test, small strain stiffness, local strain instrumentation, laser interferometry
0149-6115
544-552
Heymann, G.
4f086d55-d1c1-48df-a1a3-b552571cb0d3
Clayton, C.R.I.
8397d691-b35b-4d3f-a6d8-40678f233869
Reed, G.T.
ca08dd60-c072-4d7d-b254-75714d570139
Heymann, G.
4f086d55-d1c1-48df-a1a3-b552571cb0d3
Clayton, C.R.I.
8397d691-b35b-4d3f-a6d8-40678f233869
Reed, G.T.
ca08dd60-c072-4d7d-b254-75714d570139

Heymann, G., Clayton, C.R.I. and Reed, G.T. (2005) Triaxial ultra-small strain measurements using laser interferometry. Geotechnical Testing Journal, 28 (6), 544-552. (doi:10.1520/GTJ10406).

Record type: Article

Abstract

This paper describes a prototype device for ultra-small strain triaxial stiffness measurement, using laser-optic interferometry, and based upon the Fabry-Perot principle. The results of a test on an intact specimen of weak rock are presented, and comparisons made between measurements using this device and a submersible LVDT system. The displacement resolution of the interferometer was 0.0006 m and the strain resolution 8 × 10%. It is shown that the measurement uncertainty of the instrument was low compared with the magnitude of the displacements measured and in addition it was sufficiently accurate to detect the linear stress-strain behavior of a weak rock.

Full text not available from this repository.

More information

Published date: November 2005
Keywords: triaxial test, small strain stiffness, local strain instrumentation, laser interferometry
Organisations: Optoelectronics Research Centre, Infrastructure, Civil Engineering & the Environment

Identifiers

Local EPrints ID: 53611
URI: https://eprints.soton.ac.uk/id/eprint/53611
ISSN: 0149-6115
PURE UUID: 30c81550-6ce1-44d6-9327-1e3c3356affe
ORCID for C.R.I. Clayton: ORCID iD orcid.org/0000-0003-0071-8437

Catalogue record

Date deposited: 22 Jul 2008
Last modified: 26 Nov 2019 01:53

Export record

Altmetrics

Contributors

Author: G. Heymann
Author: C.R.I. Clayton ORCID iD
Author: G.T. Reed

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×