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are structures with great relevance in different industrial sectors and are essential for the proper functioning of the logistics that support today\u2019s society. Due to their characteristics, locations, and continuous operation, allied with the huge network of pipelines across the world, they require specialized labor, maintenance, and adequate sensing systems to access their proper operation and detect any damage they may suffer throughout their service life. In this work, a fiber Bragg grating (FBG)-based optical fiber accelerometer (OFA), which was designed and calibrated to operate through wavelength and optical power variations using different interrogation setups, was fixed together with a pair of FBG arrays along a 1020 carbon steel pipeline section with the objective of monitoring the pipeline natural frequency (fn_pipeline) to indirectly evaluate the detection and evolution of corrosion when this structure was buried in sand. Here, corrosion was induced in a small area of the pipeline for 164 days, and the OFA was able to detect a maximum fn_pipeline variation of 3.8 Hz in that period. On the other hand, the attached FBGs showed a limited performance once they could successfully operate when the pipeline was unburied, but presented operational limitations when the pipeline was buried in sand. This was due to the inability of the structure to vibrate long enough under these conditions and obtained data from these sensors were insufficient to obtain the fn_pipeline.<\/jats:p>","DOI":"10.3390\/buildings14020456","type":"journal-article","created":{"date-parts":[[2024,2,7]],"date-time":"2024-02-07T06:12:58Z","timestamp":1707286378000},"page":"456","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["FBG-Based Accelerometer for Buried Pipeline Natural Frequency Monitoring and Corrosion Detection"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6080-089X","authenticated-orcid":false,"given":"Lu\u00eds","family":"Pereira","sequence":"first","affiliation":[{"name":"I3N & Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2670-4298","authenticated-orcid":false,"given":"Israel","family":"Sousa","sequence":"additional","affiliation":[{"name":"Laboratory of Building Durability and Rehabilitation, Campus Russas, Federal University of Cear\u00e1, Russas 62900-000, Cear\u00e1, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9905-6220","authenticated-orcid":false,"given":"Esequiel","family":"Mesquita","sequence":"additional","affiliation":[{"name":"Laboratory of Building Durability and Rehabilitation, Campus Russas, Federal University of Cear\u00e1, Russas 62900-000, Cear\u00e1, Brazil"}]},{"given":"Ant\u00f4nio","family":"Cabral","sequence":"additional","affiliation":[{"name":"Laboratory of Building Durability and Rehabilitation, Campus Russas, Federal University of Cear\u00e1, Russas 62900-000, Cear\u00e1, Brazil"},{"name":"Department of Structural Engineering and Civil Construction, Campus PICI, Federal University of Cear\u00e1, Fortaleza 62900-181, Cear\u00e1, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8176-7953","authenticated-orcid":false,"given":"N\u00e9lia","family":"Alberto","sequence":"additional","affiliation":[{"name":"Instituto de Telecomunica\u00e7\u00f5es, University of Aveiro, Campus Universit\u00e1rio de Santiago, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9657-5076","authenticated-orcid":false,"given":"Camilo","family":"Diaz","sequence":"additional","affiliation":[{"name":"Laboratory of Telecommunications, Electrical Engineering Department, Federal University of Esp\u00edrito Santo, Vit\u00f3ria 29075-910, Esp\u00edrito Santo, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0215-8701","authenticated-orcid":false,"given":"Humberto","family":"Varum","sequence":"additional","affiliation":[{"name":"CONSTRUCT-LESE, Structural Division, Department of Civil Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9129-3539","authenticated-orcid":false,"given":"Paulo","family":"Antunes","sequence":"additional","affiliation":[{"name":"I3N & Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal"},{"name":"Instituto de Telecomunica\u00e7\u00f5es, University of Aveiro, Campus Universit\u00e1rio de Santiago, 3810-193 Aveiro, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,7]]},"reference":[{"key":"ref_1","unstructured":"El-Sherik, A.M. 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