Building Stone Condition Monitoring Using Specially Designed Compensated Optical Fiber Humidity Sensors

Tong Sun, K.T.V. Grattan, Sudarshan Srinivasan, P. A. Muhammed Basheer, Bernard J. Smith, H.A. Viles

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

This paper presents the design and implementation of a novel optical fiber temperature compensated relative humidity (RH) sensor device, based on fiber Bragg gratings (FBGs) and developed specifically for monitoring water ingress leading to the deterioration of building stone. The performance of the sensor thus created, together with that of conventional sensors, was first assessed in the laboratory where they were characterized under experimental conditions of controlled wetting and drying cycles of limestone blocks, before being employed “in-the-field” to monitor actual building stone in a specially built wall. Although a new construction, this was built specifically using conservation methods similar to those employed in past centuries, to allow an accurate simulation of processes occurring with wetting and drying in the historic walls in the University of Oxford.
Original languageEnglish
Article number5971760
Pages (from-to)1011-1017
Number of pages7
JournalIEEE Sensors Journal
Volume12
Issue number5
DOIs
Publication statusPublished - May 2012

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Instrumentation

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