Distributed fiber optic sensors for measuring strains of concrete, steel, and textile reinforcement: Possible fields of application

Research output: Contribution to journalResearch articleContributedpeer-review

Abstract

The article describes measurements of strains of concrete, steel and textile reinforcement with distributed fiber optic sensors (DFOS). The technology of distributed strain measurements gains currently increasing attention within the civil engineering field and indeed the DFOS can be applied in various measurement scenarios providing results and insights which were not possible before. Within this article, the fibers and adhesives that are most commonly used are compared and several measurement scenarios and their results are described, including precise strain measurements with high resolution as well as measurements on large-scale specimens. Concrete strains were measured in a multiaxial compression stress state and also during setting and hardening and in flexural tests. Strains of the steel and textile reinforcement were monitored along the bond zone and also in flexural tests. Finally, cracking patterns were observed and compared with digital image correlation methods. Validated examples of applications of DFOS in laboratory work are described.

Details

Original languageEnglish
Pages (from-to)3367-3382
Number of pages16
JournalStructural Concrete
Volume2022
Issue number6
Early online date29 Mar 2022
Publication statusPublished - Dec 2022
Peer-reviewedYes

External IDs

Scopus 85127286476
unpaywall 10.1002/suco.202100689
Mendeley b1eaaef3-2103-3ce9-abe5-852908b874a3

Keywords

Subject groups, research areas, subject areas according to Destatis

Keywords

  • DFOS, bond behavior, concrete cracking, distributed fiber optic sensing, fiber optic sensor, multiaxial compression, strain measurements, textile-reinforced concrete

Library keywords