{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T20:03:34Z","timestamp":1782936214580,"version":"3.54.5"},"reference-count":32,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2020,4,15]],"date-time":"2020-04-15T00:00:00Z","timestamp":1586908800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010665","name":"H2020 Marie Sk\u0142odowska-Curie Actions","doi-asserted-by":"publisher","award":["676139"],"award-info":[{"award-number":["676139"]}],"id":[{"id":"10.13039\/100010665","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this paper, we study the strain transfer mechanism between a host material and an optical fiber. A new analytical model handling imperfect bonding between layers is proposed. A general expression of the crack-induced strain transfer from fractured concrete material to optical fiber is established in the case of a multilayer system. This new strain transfer model is examined through performing wedge splitting tests on concrete specimens instrumented with embedded and surface-mounted fiber optic cables. The experimental results showed the validity of the crack-induced strain expression fitted to the distributed strains measured using an Optical Backscattering Reflectometry (OBR) system. As a result, precise estimations of the crack openings next to the optical cable location were achieved, as well as the monitoring of the optical cable response through following the strain lag parameter.<\/jats:p>","DOI":"10.3390\/s20082220","type":"journal-article","created":{"date-parts":[[2020,4,15]],"date-time":"2020-04-15T09:19:50Z","timestamp":1586942390000},"page":"2220","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":93,"title":["Concrete Crack Monitoring Using a Novel Strain Transfer Model for Distributed Fiber Optics Sensors"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2702-0103","authenticated-orcid":false,"given":"Antoine","family":"Bassil","sequence":"first","affiliation":[{"name":"COSYS-SII, I4S Team, University Gustave Eiffel, Inria, F-44344 Bouguenais, France"},{"name":"Quadric, Artelia Group, 14 Porte du Grand Lyon, 01700 Neyron, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0493-2326","authenticated-orcid":false,"given":"Xavier","family":"Chapeleau","sequence":"additional","affiliation":[{"name":"COSYS-SII, I4S Team, University Gustave Eiffel, Inria, F-44344 Bouguenais, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dominique","family":"Leduc","sequence":"additional","affiliation":[{"name":"GeM UMR 6183, University of Nantes, F-44322 Nantes, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Odile","family":"Abraham","sequence":"additional","affiliation":[{"name":"GERS-GeoEND, University Gustave Eiffel, IFSTTAR, F-44344 Bouguenais, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,4,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bassil, A., Wang, X., Chapeleau, X., Niederleithinger, E., Abraham, O., and Leduc, D. (2019). Distributed fiber optics sensing and coda wave interferometry techniques for damage monitoring in concrete structures. Sensors, 19.","DOI":"10.3390\/s19020356"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"575","DOI":"10.1016\/j.tust.2010.04.003","article-title":"Feasibility study of automated detection of tunnel excavation by Brillouin optical time domain reflectometry","volume":"25","author":"Klar","year":"2010","journal-title":"Tunn. Undergr. Space Technol."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1001","DOI":"10.1061\/(ASCE)ST.1943-541X.0000195","article-title":"Crack detection application for fiber reinforced concrete using BOCDA-based optical fiber strain sensor","volume":"136","author":"Imai","year":"2010","journal-title":"J. Struct. Eng."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"4152","DOI":"10.3390\/s110404152","article-title":"Recent progress in Brillouin scattering based fiber sensors","volume":"11","author":"Bao","year":"2011","journal-title":"Sensors"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Imai, M., and Feng, M. (2012). Sensing optical fiber installation study for crack identification using a stimulated Brillouin-based strain sensor. Struct. Health Monit., 501\u2013509.","DOI":"10.1177\/1475921712442440"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1797","DOI":"10.1061\/(ASCE)EM.1943-7889.0000622","article-title":"Theoretical and experimental investigations into crack detection with BOTDR-distributed fiber optic sensors","volume":"139","author":"Feng","year":"2013","journal-title":"J. Eng. Mech."},{"key":"ref_7","unstructured":"Voss, K.F., and Wanser, K.H. (1994, January 12\u201314). Fiber sensors for monitoring structural strain and cracks. Proceedings of the Second European Conference on Smart Structures and Materials, Glasgow, Scotland."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"300","DOI":"10.1061\/(ASCE)0733-9399(2000)126:3(300)","article-title":"Debonding and calibration shift of optical fiber sensors in concrete","volume":"126","author":"Leung","year":"2000","journal-title":"J. Eng. Mech."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"268","DOI":"10.1016\/j.sna.2004.08.025","article-title":"Crack sensing with a multimode fiber: Experimental and theoretical studies","volume":"118","author":"Olson","year":"2005","journal-title":"Sens. Actuator A Phys."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"458","DOI":"10.1016\/j.sna.2006.09.004","article-title":"Applications of a distributed fiber optic crack sensor for concrete structures","volume":"135","author":"Wan","year":"2007","journal-title":"Sens. Actuator A Phys."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"3045","DOI":"10.1007\/s11431-010-4111-4","article-title":"A fiber optic sensor for detecting and monitoring cracks in concrete structures","volume":"53","author":"Bao","year":"2010","journal-title":"Sci. China Technol. Sci."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"185","DOI":"10.1007\/s11431-011-4648-x","article-title":"Theoretical analysis and experiment of micromechanics and mechanics-optics coupling of distributed optic-fiber crack sensing","volume":"54","author":"Liu","year":"2011","journal-title":"Sci. China Technol. Sci."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"916","DOI":"10.1016\/j.conbuildmat.2012.05.029","article-title":"Quantitative strain measurement and crack detection in RC structures using a truly distributed fiber optic sensing system","volume":"37","author":"Quiertant","year":"2012","journal-title":"Constr. Build Mater."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1201\/b17073-8","article-title":"Management and safety of existing concrete structures via optical fiber distributed sensing","volume":"Volume 10","author":"Casas","year":"2014","journal-title":"Maintenance and Safety of Aging Infrastructure: Structures and Infrastructures Book Series"},{"key":"ref_15","unstructured":"Le Cam, V., Mevel, L., and Schoefs, F. (2014, January 8\u201311). Assessing Cracking Characteristics of Concrete Structures by Distributed Optical Fiber and Non-Linear Finite Element Modelling. Proceedings of the EWSHM\u20147th European Workshop on Structural Health Monitoring, Nantes, France."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"035005","DOI":"10.1088\/0964-1726\/24\/3\/035005","article-title":"Cracking assessment in concrete structures by distributed optical fiber","volume":"24","author":"Casas","year":"2015","journal-title":"Smart Mater. Struct."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"57","DOI":"10.14359\/51710870","article-title":"Monitoring Reinforced Concrete Serviceability Performance Using Fiber-Optic Sensors","volume":"116","author":"Brault","year":"2019","journal-title":"ACI Struct. J."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"04018096","DOI":"10.1061\/(ASCE)CF.1943-5509.0001250","article-title":"Monitoring of Beams in an RC Building during a Load Test Using Distributed Sensors","volume":"33","author":"Brault","year":"2019","journal-title":"J. Perform. Constr. Facil."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"414692","DOI":"10.1155\/2012\/414692","article-title":"Performance Evaluation of PPP-BOTDA-Based Distributed Optical Fiber Sensors","volume":"8","author":"Zhang","year":"2012","journal-title":"Int. J. Distrib. Sens. N."},{"key":"ref_20","first-page":"357","article-title":"SHM by DOFS in civil engineering: A review","volume":"2","author":"Rodriguez","year":"2015","journal-title":"Struct. Monit. Maint."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1510","DOI":"10.1177\/1475921718804466","article-title":"Strain and crack analysis within concrete members using distributed fibre optic sensors","volume":"18","author":"Sienko","year":"2018","journal-title":"Struct. Health Monit."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"150","DOI":"10.1002\/best.201800089","article-title":"Quasikontinuierliche faseroptische Dehnungsmessung zur Rissdetektion in Betonkonstruktionen","volume":"114","author":"Fischer","year":"2019","journal-title":"Beton-und Stahlbetonbau"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"385","DOI":"10.1061\/(ASCE)0733-9399(1998)124:4(385)","article-title":"Mechanics of bond and interface shear transfer in optical fiber sensors","volume":"124","author":"Ansari","year":"1998","journal-title":"J. Eng. Mech."},{"key":"ref_24","first-page":"41","article-title":"Die Nietkraft Verteilung in Zugbeanspruchten mit Konstanten Laschenquerschritten","volume":"15","author":"Volkersen","year":"1938","journal-title":"Luftahrt Forschungen"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"024402","DOI":"10.1117\/1.2173659","article-title":"Strain transferring analysis of fiber Bragg grating sensors","volume":"45","author":"Li","year":"2006","journal-title":"Opt. Eng."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"075106","DOI":"10.1088\/0957-0233\/27\/7\/075106","article-title":"Strain transfer analysis of optical fiber based sensors embedded in an asphalt pavement structure","volume":"27","author":"Wang","year":"2016","journal-title":"Meas. Sci. Technol."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"492","DOI":"10.1088\/0964-1726\/9\/4\/312","article-title":"Arbitrary strain transfer from a host to an embedded fiber-optic sensor","volume":"9","author":"Duck","year":"2000","journal-title":"Smart Mater. Struct."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Wang, C., Olson, M., Doijkhand, N., and Singh, S. (2016, January 24\u201327). A novel DdTS technology based on fiber optics for early leak detection in pipelines. Proceedings of the 2016 IEEE International Carnahan Conference on Security Technology (ICCST), Orlando, FL, USA.","DOI":"10.1109\/CCST.2016.7815724"},{"key":"ref_29","first-page":"38","article-title":"Fracture energy determination of concrete with cube-shaped specimens","volume":"31","author":"Linsbauer","year":"1986","journal-title":"Zem. Beton"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1016\/0013-7944(90)90189-N","article-title":"The wedge splitting test, a new method of performing stable fracture mechanics tests","volume":"35","author":"Wittmann","year":"1990","journal-title":"Eng. Fract. Mech."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"1049","DOI":"10.1016\/j.cemconres.2008.03.017","article-title":"Effect of specimen size on fracture energy and softening curve of concrete: Part I. Experiments and fracture energy","volume":"38","author":"Zhao","year":"2008","journal-title":"Cem. Concr. Res."},{"key":"ref_32","unstructured":"Bassil, A. (2019). Distributed Fiber Optics Sensing for Crack Monitoring of Concrete Structures. [Ph.D. Thesis, IFSTTAR\u2014University of Nantes]."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/8\/2220\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T13:21:12Z","timestamp":1760361672000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/8\/2220"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,4,15]]},"references-count":32,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2020,4]]}},"alternative-id":["s20082220"],"URL":"https:\/\/doi.org\/10.3390\/s20082220","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,4,15]]}}}