Picture map of Europe with pins indicating European capital cities

Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

Explore research outputs by the European Policies Research Centre...

First-time demonstration of measuring concrete prestress levels with metal packaged fibre optic sensors

Mckeeman, I and Fusiek, G and Perry, M and Johnston, M and Saafi, M and Niewczas, P and Walsh, M and Khan, S (2016) First-time demonstration of measuring concrete prestress levels with metal packaged fibre optic sensors. Smart Materials and Structures, 25 (9). ISSN 0964-1726

[img]
Preview
Text (McKeeman-etal-SMS2016-Measuring-concrete-prestress-levels-with-metal-packaged-fibre-optic-sensors)
McKeeman_etal_SMS2016_Measuring_concrete_prestress_levels_with_metal_packaged_fibre_optic_sensors.pdf - Accepted Author Manuscript

Download (10MB) | Preview

Abstract

In this work we present the first large-scale demonstration of metal packaged fibre Bragg grating sensors developed to monitor prestress levels in prestressed concrete. To validate the technology, strain and temperature sensors were mounted on steel prestressing strands in concrete beams and stressed up to 60% of the ultimate tensile strength of the strand. We discuss the methods and calibration procedures used to fabricate and attach the temperature and strain sensors. The use of induction brazing for packaging the fibre Bragg gratings and welding the sensors to prestressing strands eliminates the use of epoxy, making the technique suitable for high-stress monitoring in an irradiated, harsh industrial environment. Initial results based on the first week of data after stressing the beams show the strain sensors are able to monitor prestress levels in ambient conditions.