{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T12:54:54Z","timestamp":1769086494219,"version":"3.49.0"},"reference-count":56,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2017,10,2]],"date-time":"2017-10-02T00:00:00Z","timestamp":1506902400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Structural health monitoring is a critical requirement in many composites. Numerous monitoring strategies rely on measurements of temperature or strain (or both), however these are often restricted to point-sensing or to the coverage of small areas. Spatially-continuous data can be obtained with optical fiber sensors. In this work, we report high-resolution distributed Brillouin sensing over standard fibers that are embedded in composite structures. A phase-coded, Brillouin optical correlation domain analysis (B-OCDA) protocol was employed, with spatial resolution of 2 cm and sensitivity of 1 \u00b0K or 20 micro-strain. A portable measurement setup was designed and assembled on the premises of a composite structures manufacturer. The setup was successfully utilized in several structural health monitoring scenarios: (a) monitoring the production and curing of a composite beam over 60 h; (b) estimating the stiffness and Young\u2019s modulus of a composite beam; and (c) distributed strain measurements across the surfaces of a model wing of an unmanned aerial vehicle. The measurements are supported by the predictions of structural analysis calculations. The results illustrate the potential added values of high-resolution, distributed Brillouin sensing in the structural health monitoring of composites.<\/jats:p>","DOI":"10.3390\/s17102266","type":"journal-article","created":{"date-parts":[[2017,10,2]],"date-time":"2017-10-02T13:10:05Z","timestamp":1506949805000},"page":"2266","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Brillouin Optical Correlation Domain Analysis in Composite Material Beams"],"prefix":"10.3390","volume":"17","author":[{"given":"Yonatan","family":"Stern","sequence":"first","affiliation":[{"name":"Faculty of Engineering and Institute for Nano-Technology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel"}]},{"given":"Yosef","family":"London","sequence":"additional","affiliation":[{"name":"Faculty of Engineering and Institute for Nano-Technology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel"}]},{"given":"Eyal","family":"Preter","sequence":"additional","affiliation":[{"name":"Faculty of Engineering and Institute for Nano-Technology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel"}]},{"given":"Yair","family":"Antman","sequence":"additional","affiliation":[{"name":"Faculty of Engineering and Institute for Nano-Technology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel"}]},{"given":"Hilel","family":"Diamandi","sequence":"additional","affiliation":[{"name":"Faculty of Engineering and Institute for Nano-Technology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel"}]},{"given":"Maayan","family":"Silbiger","sequence":"additional","affiliation":[{"name":"Xenom Ltd., 4 Gluska st., Rishon LeTzion 7565004, Israel"}]},{"given":"Gadi","family":"Adler","sequence":"additional","affiliation":[{"name":"Xenom Ltd., 4 Gluska st., Rishon LeTzion 7565004, Israel"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1188-8458","authenticated-orcid":false,"given":"Eyal","family":"Levenberg","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering, Technical University of Denmark, Kongens Lyngby 2800, Denmark"}]},{"given":"Doron","family":"Shalev","sequence":"additional","affiliation":[{"name":"Doron Shalev Engineering Ltd., 23 Bar-Kochba st., Bnei-Brak 5126002, Israel"}]},{"given":"Avi","family":"Zadok","sequence":"additional","affiliation":[{"name":"Faculty of Engineering and Institute for Nano-Technology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel"}]}],"member":"1968","published-online":{"date-parts":[[2017,10,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1006\/jsvi.1999.2624","article-title":"Vibration-based model-dependent damage (delamination) identification and health monitoring for composite structures\u2014A review","volume":"230","author":"Zou","year":"2000","journal-title":"J. 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