{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,12]],"date-time":"2026-02-12T11:31:35Z","timestamp":1770895895626,"version":"3.50.1"},"reference-count":34,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2015,1,29]],"date-time":"2015-01-29T00:00:00Z","timestamp":1422489600000},"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>Ubiquitous smartphones have created a significant opportunity to form a low-cost wireless Citizen Sensor network and produce big data for monitoring structural integrity and safety under operational and extreme loads. Such data are particularly useful for rapid assessment of structural damage in a large urban setting after a major event such as an earthquake. This study explores the utilization of smartphone accelerometers for measuring structural vibration, from which structural health and post-event damage can be diagnosed. Widely available smartphones are tested under sinusoidal wave excitations with frequencies in the range relevant to civil engineering structures. Large-scale seismic shaking table tests, observing input ground motion and response of a structural model, are carried out to evaluate the accuracy of smartphone accelerometers under operational, white-noise and earthquake excitations of different intensity. Finally, the smartphone accelerometers are tested on a dynamically loaded bridge. The extensive experiments show satisfactory agreements between the reference and smartphone sensor measurements in both time and frequency domains, demonstrating the capability of the smartphone sensors to measure structural responses ranging from low-amplitude ambient vibration to high-amplitude seismic response. Encouraged by the results of this study, the authors are developing a citizen-engaging and data-analytics crowdsourcing platform towards a smartphone-based Citizen Sensor network for structural health monitoring and post-event damage assessment applications.<\/jats:p>","DOI":"10.3390\/s150202980","type":"journal-article","created":{"date-parts":[[2015,1,29]],"date-time":"2015-01-29T10:10:02Z","timestamp":1422526202000},"page":"2980-2998","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":114,"title":["Citizen Sensors for SHM: Use of Accelerometer Data  from Smartphones"],"prefix":"10.3390","volume":"15","author":[{"given":"Maria","family":"Feng","sequence":"first","affiliation":[{"name":"Department of Civil Engineering and Engineering Mechanics, Columbia University, 500 W 120th St, New York, NY 10027, USA"}]},{"given":"Yoshio","family":"Fukuda","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering and Engineering Mechanics, Columbia University, 500 W 120th St, New York, NY 10027, USA"}]},{"given":"Masato","family":"Mizuta","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering and Engineering Mechanics, Columbia University, 500 W 120th St, New York, NY 10027, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7177-0753","authenticated-orcid":false,"given":"Ekin","family":"Ozer","sequence":"additional","affiliation":[{"name":"Department of Civil Engineering and Engineering Mechanics, Columbia University, 500 W 120th St, New York, NY 10027, USA"}]}],"member":"1968","published-online":{"date-parts":[[2015,1,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1177\/058310249803000201","article-title":"A summary review of vibration-based damage identification methods","volume":"30","author":"Doebling","year":"1998","journal-title":"Shock Vib. Dig."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"355","DOI":"10.1177\/1475921704047500","article-title":"Vibration based condition monitoring: A review","volume":"3","author":"Carden","year":"2004","journal-title":"Struct. Health Monit."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"536","DOI":"10.1109\/JSEN.2007.891988","article-title":"Real-time structural health monitoring using a novel fiber-optic accelerometer system","volume":"7","author":"Kim","year":"2007","journal-title":"IEEE Sens. J."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Fukuda, Y., Feng, M., Narita, Y., Kaneko, S.I., and Tanaka, T. (2010, January 1\u20134). Vision-based displacement sensor for monitoring dynamic response using robust object search algorithm. Kona, HI, USA.","DOI":"10.1109\/ICSENS.2010.5689997"},{"key":"ref_5","first-page":"34","article-title":"Did You Feel It?","volume":"62","author":"Smith","year":"1999","journal-title":"Eng. Sci."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"362","DOI":"10.1785\/gssrl.78.3.362","article-title":"\u201cDid You Feel It?\u201d intensity data: A surprisingly good measure of earthquake ground motion","volume":"78","author":"Atkinson","year":"2007","journal-title":"Seismol. Res. Lett."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Wald, D.J., Quitoriano, V., Worden, C.B., Hopper, M., and Dewey, J.W. (2012). USGS \u201cDid you feel it?\u201d internet-based macroseismic intensity maps. Ann. Geophys., 54.","DOI":"10.4401\/ag-5354"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1785\/gssrl.80.1.26","article-title":"The quake-catcher network: Citizen science expanding seismic horizons","volume":"80","author":"Cochran","year":"2009","journal-title":"Seismol. Res. Lett."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1109\/MIM.2009.5338255","article-title":"A novel strong-motion seismic network for community participation in earthquake monitoring","volume":"12","author":"Cochran","year":"2009","journal-title":"IEEE Instrum. Measur. Mag."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"526","DOI":"10.1785\/gssrl.82.4.526","article-title":"The Quake-catcher network rapid aftershock mobilization program following the 2010 m 8.8 Maule, Chile earthquake","volume":"82","author":"Chung","year":"2011","journal-title":"Seismol. Res. Lett."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Cochran, E.S., Lawrence, J.F., Kaiser, A., Fry, B., Chung, A., and Christensen, C. (2012). Comparison between low-cost and traditional MEMS accelerometers: A case study from the M7.1 Darfield, New Zealand, aftershock deployment. Ann. Geophys., 54.","DOI":"10.4401\/ag-5268"},{"key":"ref_12","first-page":"31","article-title":"Community Seismic Network: Catching Earthquakes Quickly and Cheaply Through Volunteer-based Sensor Networks","volume":"11","author":"Obenshain","year":"2010","journal-title":"Caltech Undergrad. Res. J."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Clayton, R.W., Heaton, T., Chandy, M., Krause, A., Kohler, M., Bunn, J., and Aivazis, M. (2012). Community seismic network.. Ann. Geophys., 54.","DOI":"10.4401\/ag-5269"},{"key":"ref_14","unstructured":"Faulkner, M., Olson, M., Chandy, R., Krause, J., Chandy, K.M., and Krause, A. (2011, January 12\u201314). The next big one: Detecting earthquakes and other rare events from community-based sensors. Chicago, IL, USA."},{"key":"ref_15","unstructured":"Dashti, S., Reilly, J., Bray, J.D., Bayen, A., Glaser, S., Mari, E., and Bray, P.J.D. IShake: Using Personal Devices to Deliver Rapid Semi-Qualitative Earthquake Shaking Information. Available online: http:\/\/bayen.eecs.berkeley.edu\/sites\/default\/files\/techreps\/grdcee11.pdf."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"242","DOI":"10.1109\/TASE.2013.2245121","article-title":"Mobile Phones as Seismologic Sensors: Automating Data Extraction for the iShake System","volume":"2","author":"Reilly","year":"2013","journal-title":"IEEE T. Autom. Sci. Eng."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"721","DOI":"10.1193\/091711EQS229M","article-title":"Evaluating the Reliability of Phones as Seismic Monitoring Instruments","volume":"30","author":"Dashti","year":"2013","journal-title":"Earthq. Spectra"},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Kohler, M.D., Heaton, T.H., and Cheng, M.H. (2013, January 10). The Community Seismic Network and Quake-Catcher Network: Enabling structural health monitoring through instrumentation by community participants. San Diego, CA, USA.","DOI":"10.1117\/12.2010306"},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Eriksson, J., Girod, L., Hull, B., Newton, R., Madden, S., and Balakrishnan, H. (2008, January 17\u201320). The pothole patrol: Using a mobile sensor network for road surface monitoring. Breckenridge, CO, USA.","DOI":"10.1145\/1378600.1378605"},{"key":"ref_20","unstructured":"Comparison of Smartphones. Available online: http:\/\/en.wikipedia.org\/wiki\/Comparison_of_smartphones."},{"key":"ref_21","unstructured":"ST Microelectronics. Available online: http:\/\/www.st.com\/web\/catalog\/sense_power\/FM89\/SC444\/PF218132."},{"key":"ref_22","unstructured":"ST Microelectronics. Available online: http:\/\/www.st.com\/web\/catalog\/sense_power\/FM89\/FM89\/SC444\/PF191236."},{"key":"ref_23","unstructured":"PCB Piezotronics. Available online: http:\/\/www.pcb.com\/Products.aspx?m=393B04#.UxC-KvldV8F."},{"key":"ref_24","unstructured":"Bosch Sensortech. Available online: https:\/\/www.olimex.com\/Products\/Modules\/Sensors\/MOD-SMB380\/resources\/SMB380_Preliminary_Datasheet_Rev13_20070918.pdf."},{"key":"ref_25","unstructured":"Evarts, H. All Shook Up. Available online: http:\/\/engineering.columbia.edu\/all-shook."},{"key":"ref_26","unstructured":"Ruane, M.E. \u2018Earthquake\u2019 Rattles a Cathedral Pinnacle But This Time in the Laboratory. Available online: http:\/\/www.washingtonpost.com\/local\/earthquake-again-rattles-cathedral-pinnacle-but-this-time-in-the-laboratory\/2014\/02\/19\/c6e42c86-959a-11e3-9616-d367fa6ea99b_story.html."},{"key":"ref_27","unstructured":"Ozer, E., and Soyoz, S. (2013). Vibration-Based Damage Detection and Seismic Performance Assessment of Bridges. Earthq. Spectra."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Ozer, E., Feng, M.Q., and Soyoz, S. (2014). SHM-integrated bridge reliability estimation using multivariate stochastic processes. Earthq. Eng. Struct. Dyn.","DOI":"10.1002\/eqe.2527"},{"key":"ref_29","unstructured":"Saiidi, M.S. NEES NEES Project Warehouse, Large-Scale Experimental Seismic Studies of a Two-Span Reinforced Concrete Bridge System. Available online: http:\/\/nees.org\/warehouse\/project\/32."},{"key":"ref_30","unstructured":"Johnson, N. Large-Scale Experimental and Analytical Seismic Studies of a Two-Span Reinforced Concrete Bridge System. Available online: http:\/\/sunzi.lib.hku.hk\/ER\/detail\/hkul\/4343108."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"173","DOI":"10.1061\/(ASCE)1084-0702(2008)13:2(173)","article-title":"Seismic testing of a two-span reinforced concrete bridge","volume":"13","author":"Johnson","year":"2008","journal-title":"J. Bridge Eng."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"781","DOI":"10.1193\/1.2219487","article-title":"Identification, model updating, and response prediction of an instrumented 15-story steel-frame building","volume":"22","author":"Skolnik","year":"2006","journal-title":"Earthq. Spectra"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"347","DOI":"10.1016\/j.strusafe.2010.03.006","article-title":"Damage identification study of a seven-story full-scale building slice tested on the UCSD-NEES shake table","volume":"32","author":"Moaveni","year":"2010","journal-title":"Struct. Saf."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"661","DOI":"10.1002\/eqe.1053","article-title":"System identification of a building from multiple seismic records","volume":"40","author":"Ulusoy","year":"2011","journal-title":"Earthq. Eng. Struct. 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