{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:02:39Z","timestamp":1760241759932,"version":"build-2065373602"},"reference-count":49,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2018,9,7]],"date-time":"2018-09-07T00:00:00Z","timestamp":1536278400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Science Foundations of China","award":["91748205; 51575017"],"award-info":[{"award-number":["91748205; 51575017"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper considers a Hilbert marginal spectrum-based approach to health monitoring of active suspension bridge hangers. The paper proposes to takes advantage of the presence of active cables and use them as an excitation mean of the bridge, while they are used for active damping. The Hilbert\u2013Huang transform is used to calculate the Hilbert marginal spectrum and establish a damage index for each hanger of the suspension bridge. The paper aims to investigate the method experimentally, through a series of damage scenarios, on a laboratory suspension bridge mock-up equipped with four active cables; each active cable is made of a displacement actuator collocated with a force sensor. Different locations and levels of damage severity are implemented. For the first time, the investigation demonstrates experimentally the effectiveness of the technique, as well as its limitations, to detect and locate the damage in hangers of a suspension bridge.<\/jats:p>","DOI":"10.3390\/s18093002","type":"journal-article","created":{"date-parts":[[2018,9,7]],"date-time":"2018-09-07T11:47:41Z","timestamp":1536320861000},"page":"3002","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Damage Detection in Active Suspension Bridges: An Experimental Investigation"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7798-738X","authenticated-orcid":false,"given":"Fanhao","family":"Meng","sequence":"first","affiliation":[{"name":"Robotics Institute, Beihang University, 100191 Beijing, China"},{"name":"Active Structures Laboratory, Universit\u00e9 Libre de Bruxelles, 1050 Brussels, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4174-0051","authenticated-orcid":false,"given":"Bilal","family":"Mokrani","sequence":"additional","affiliation":[{"name":"Department of Mechanical, Materials and Aerospace Engineering, University of Liverpool, Liverpool L69 3BX, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Alaluf","sequence":"additional","affiliation":[{"name":"Active Structures Laboratory, Universit\u00e9 Libre de Bruxelles, 1050 Brussels, Belgium"},{"name":"Optoelectronics Section, ESA-ESTEC, 2201 AZ Noordwijk, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jingjun","family":"Yu","sequence":"additional","affiliation":[{"name":"Robotics Institute, Beihang University, 100191 Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andr\u00e9","family":"Preumont","sequence":"additional","affiliation":[{"name":"Active Structures Laboratory, Universit\u00e9 Libre de Bruxelles, 1050 Brussels, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,9,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"711","DOI":"10.1177\/1475921716680849","article-title":"Structural damage detection using transmissibility together with hierarchical clustering analysis and similarity measure","volume":"16","author":"Zhou","year":"2017","journal-title":"Struct. 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