PSI - Issue 33

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDir ct Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000

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Procedia Structural Integrity 33 (2021) 925–932

IGF26 - 26th International Conference on Fracture and Structural Integrity On application of distributed FOS embedded into material for the mechanical state monitoring of civil structures IGF26 - 26th International Conference on Fracture and Structural Integrity On application of distributed FOS embedded into material for the mechanical state monitoring of civil structures

Matveenko V.P. a , Serovaev G.S. a , Kosheleva N.A. a *, Gusev G.N. a a Institute of Continuous Media Mechanics UB RAS, 1, Akademika Koroleva Str.,Perm, 614068, Russia Matveenko V.P. a , Serovaev G.S. a , Kosheleva N.A. a *, Gusev G.N. a a Institute of Continuous Media Mechanics UB RAS, 1, Akademika Koroleva Str.,Perm, 614068, Russia

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the IGF ExCo Abstract The paper presents the results of a study devoted to the use of distributed fiber-optic sensors embedded into the material in order to measure strains in a cement sample under loading according to the three-point bending scheme. As part of the study, the performance of distributed fiber-optic sensors embedded into the material for registration the strain behavior of the sample and the response to the appearance and development of defects has been shown. A comparison of measurements obtained using distributed fiber-optic sensors embedded into the material with measurements of embedded single point fiber-optic sensors based on the fiber Bragg grating and the results of numerical simulation by the finite element method is presented. The obtained results indicate the possibility of using embedded distributed fiber-optic sensors to assess the mechanical state of engineering structures. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo Keywords: distributed fiber-optic sensors; mechanical state monitoring; numerical simulation 1. Introduction The strength and durability of important engineering structures is largely determined by the mechanical state of structural elements, as well as by the conditions of their operation. The need for timely and regular analysis of the mechanical state of structural elements determines the demand and widespread use of methods for structural health monitoring. One of the main components of an effective system for mechanical state monitoring is sensitive elements, which should register various parameters of the state of the structure with a high degree of accuracy and Abstract The paper presents the results of a study devoted to the use of distributed fiber-optic sensors embedded into the material in order to me su e strai in a cement s mple under loading according to th thr e point b ding sch m . As part of the study, the performance of distributed fiber-optic sensors embedded into the ma erial for regis ration the strain behavio of the sample and the respo s to the app aranc and devel pm nt of efects has been shown. A comparison of measurements obtained usi g distributed fiber-optic sensors mbed d into the material with measurements of embedded i gle point fiber-optic sensors based on he fiber Bragg grating and the results of numerical simulation by the fi ite el ent method is resented. The obtained results i dicate the possibility of using embedded distributed fiber-op c sensors to assess th mechanical state of ngin ering structures. © 2021 T Authors. Publi hed by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statem nt: Peer-revi w under responsibility of the scientifi committee of the IGF ExCo Keywords: distributed fiber-optic sensors; mechanical state monitoring; numerical si ulation 1. Introduction The strength and durability of important engineering structures is largely determined by the mechanical state of structural lements, as wel as by the conditions of their operation. The n ed for timely and r gular a alysi of the mechanical stat of structural elements determines the demand and widespread use of methods for structural health onitor ng. On of the m in componen s of an effective system for m chanical state monitoring is sensitive elements, which should register various parameters o the state of the structure with a high degree of accuracy and

* Corresponding author. Tel.: +7(342)-237-83-08. E-mail address: nataly.kosheleva@gmail.com * Corresponding author. Tel.: +7(342)-237-83-08. E-mail address: nataly.kosheleva@gmail.com

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo 2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-revi w under responsibility of the scientifi committee of the IGF ExCo

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the IGF ExCo 10.1016/j.prostr.2021.10.103