{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,2]],"date-time":"2026-02-02T14:23:25Z","timestamp":1770042205059,"version":"3.49.0"},"reference-count":33,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2021,4,17]],"date-time":"2021-04-17T00:00:00Z","timestamp":1618617600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010661","name":"Horizon 2020 Framework Programme","doi-asserted-by":"publisher","award":["723360"],"award-info":[{"award-number":["723360"]}],"id":[{"id":"10.13039\/100010661","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper proposes a new vibration-based structural health monitoring method for the identification of delamination defects in composite bulkheads used in small-length fiber-based ships. The core of this work is to find out if the variations of vibration energy can be efficiently used as a key performance indicator for the detection and quantification of delamination defects in marine composite bulkheads. For this purpose, the changes of vibrational energy exerted by delamination defects in sandwich and monolithic composite panel bulkheads with different types of delamination phenomenon are investigated using a non-destructive test. Experiments show that the overall vibration energy of the bulkheads is directly dependent on the damage conditions of the specimens and therefore, the variations of this parameter are a good indicator of the incorporation of delamination defects in composite bulkheads. Additionally, the overall vibration energy changes also give interesting information about the severity of the delamination defect in the panels. Hence, this methodology based on vibratory energy can be used to accurately determine delamination defects in medium-sized composite bulkheads with the advantages of being a simple and cost-effective approach. The findings of this research possess important applications for the identification of delamination failures in composite components such as bulkheads, turbine blades, and aircraft structures, among others.<\/jats:p>","DOI":"10.3390\/s21082843","type":"journal-article","created":{"date-parts":[[2021,4,19]],"date-time":"2021-04-19T21:59:49Z","timestamp":1618869589000},"page":"2843","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Detection and Quantification of Delamination Failures in Marine Composite Bulkheads via Vibration Energy Variations"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3649-0489","authenticated-orcid":false,"given":"Cristobal","family":"Garcia","sequence":"first","affiliation":[{"name":"T\u00e9cnicas y Servicios de Ingenier\u00eda S.L., Avda. Pio XII, 44, 28016 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2677-0981","authenticated-orcid":false,"given":"Alfonso","family":"Jurado","sequence":"additional","affiliation":[{"name":"T\u00e9cnicas y Servicios de Ingenier\u00eda S.L., Avda. Pio XII, 44, 28016 Madrid, Spain"}]},{"given":"Oscar","family":"Zaba","sequence":"additional","affiliation":[{"name":"T\u00e9cnicas y Servicios de Ingenier\u00eda S.L., Avda. Pio XII, 44, 28016 Madrid, Spain"}]},{"given":"Publio","family":"Beltran","sequence":"additional","affiliation":[{"name":"T\u00e9cnicas y Servicios de Ingenier\u00eda S.L., Avda. Pio XII, 44, 28016 Madrid, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Muhammad, A., Rahman, M.R., Baini, R., and Bakri, M.K.B. (2021). Applications of sustainable polymer composites in automobile and aerospace industry. Adv. Sustain. Polym. Compos., 185\u2013207.","DOI":"10.1016\/B978-0-12-820338-5.00008-4"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"3504","DOI":"10.1016\/j.jmrt.2019.06.025","article-title":"Investigation of rare earth particulate on tribological and mechanical properties of Al-6060 alloy composites for aerospace application","volume":"8","author":"Sharma","year":"2019","journal-title":"J. Mater. Res. Technol."},{"key":"ref_3","unstructured":"Jurado, A., Garc\u00eda, C., S\u00e1nchez, E., and Beltran, P. (2020, January 27\u201330). FIBRESHIP Project: Engineering, production and life cycle management for the complete construction of large length fibre-based ships. Proceedings of the Transport Research Arena 2020, Helsinki, Finland."},{"key":"ref_4","unstructured":"Jurado, A., Garc\u00eda, C., and Sanchez, E. (2020, January 7\u20138). FIBRESHIP, the greatest challenge of using composite materials for the construction of large-length ships. Proceedings of the Conference of Composite Materials (MATCOMP 19), Vigo, Spain."},{"key":"ref_5","first-page":"4493","article-title":"An empirical research on areca fiber polymer composite for automotive components in modern industry","volume":"33","author":"Paul","year":"2020","journal-title":"Mater. Today"},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Yildiz, T. (2019). Design and Analysis of a Lightweight Composite Shipping Container Made of Carbon Fiber Laminates. Logistics, 3.","DOI":"10.3390\/logistics3030018"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"14001","DOI":"10.1051\/matecconf\/201814814001","article-title":"The effect of nylon nanofibers on the dynamic behaviour and the delamination resistance of GFRP composites","volume":"108","author":"Garcia","year":"2018","journal-title":"Matec Web Conf."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"923","DOI":"10.1016\/j.compstruct.2017.06.018","article-title":"Vibratory behaviour of glass fibre reinforced polymer (GFRP) interleaved with nylon nanofibers","volume":"176","author":"Garcia","year":"2017","journal-title":"Compos. Struct."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Laureti, S., Rizwan, M.K., Malekmohammadi, H., Burrascano, P., Natali, M., Torre, L., Rallinni, M., Puri, I., Hutchings, D., and Riccci, M. (2019). Delamination Detection in Polymeric Ablative Materals Using Pulse-Compression Thermography and Air-Coupled Ultrasound. Sensors, 19.","DOI":"10.3390\/s19092198"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"527","DOI":"10.1016\/j.nanoen.2019.03.070","article-title":"Triboelectric sensor as a dual system for impact monitoring and prediction of the damage in composite structures","volume":"60","author":"Garcia","year":"2019","journal-title":"Nano Energy"},{"key":"ref_11","first-page":"1124","article-title":"Detection capability evaluation of low velocity impact damage in composites using ultrasonic infrared thermography","volume":"37","author":"Li","year":"2016","journal-title":"Chin. J. Sci. Instrum."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1016\/0143-8166(95)00020-8","article-title":"Shearography for non-destructive evaluation of composite structures","volume":"24","author":"Hung","year":"1996","journal-title":"Opt. Laser Eng."},{"key":"ref_13","unstructured":"Vavrik, D., Jakubek, J., Jandejsek, I., Kumpova, I., and Zemlicka, J. (2014, January 25\u201328). X-ray radiography and tomography study of a delamination in a CFRP and honeycomb structures. Proceedings of the 5th Conference on Industrial Computed Tomography (iCT), Wels, Austria."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"11805","DOI":"10.3390\/s150511805","article-title":"Modeling of Acoustic Emission Signal Propagation in Waveguides","volume":"15","author":"Zelenyak","year":"2015","journal-title":"Sensors"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1200","DOI":"10.1177\/002199838902301201","article-title":"Effect of delamination on the natural frequencies of Composite Laminates","volume":"23","author":"Pardoen","year":"1989","journal-title":"J. Compos. Mater."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Sultan, R., Guirguis, S., Younes, M., and El-Soaly, E. (2020). Delamination detection of composite laminates using natural frequency vibration method. Int. J. Mech. Eng. Rob. Res., 1.","DOI":"10.21608\/amme.2012.37258"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"25","DOI":"10.1016\/0263-8223(94)00017-4","article-title":"Dynamics of graphite\/epoxy composite under delamination fracture and enviromental effects","volume":"30","author":"Lai","year":"1995","journal-title":"Compos. Struct."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1016\/S1359-8368(01)00050-6","article-title":"Damage detection in composite materials using frequency response methods","volume":"33","author":"Kessler","year":"2002","journal-title":"Compos. Part B: Eng."},{"key":"ref_19","unstructured":"Kannappan, L., and Shankar, K. (2007, January 10\u201312). Non destructive inspection of plates using frequency measurements. Proceedings of the 5th Austalasian Congress on Applied Mechanics (ACAM 2007), Brisbane, Australia."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"496","DOI":"10.1177\/1077546314533584","article-title":"Vibration-based delamination detection in composite beams through frequency change","volume":"22","author":"Zhifang","year":"2015","journal-title":"J. Vib. Control"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Zou, Y., Tong, L., and Steven, G.P. (2000). Vibration-based model-dependent damage (delamination) identification and health monitoring for composite structures\u2014A review. J. Sound Vib., 230.","DOI":"10.1006\/jsvi.1999.2624"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"46","DOI":"10.1016\/j.optlaseng.2016.10.022","article-title":"Application of scanning laser Doppler vibrometry for delaminationdetection in composite structures","volume":"99","author":"Kudela","year":"2017","journal-title":"Opt. Lasers Eng."},{"key":"ref_23","unstructured":"Ravikiran, N.K., Venkataramanaiah, A., Bhat, M.R., and Murthy, C.R.L. (2006, January 7\u20139). Detection and evaluation of impact damage in CFRP laminates using ultrasound C-Scan and IR thermography. Proceedings of the National Seminar on Non-Destructive Evaluation, Hyderabad, India."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1016\/j.compstruct.2009.01.004","article-title":"Finite element modeling of composite plates with internal delamination","volume":"90","author":"Alnefaie","year":"2009","journal-title":"Compos. Struct."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1016\/j.apacoust.2015.10.026","article-title":"Experimental analysis of the linear and nonlinear behaviour of composites with delaminations","volume":"108","author":"Hammami","year":"2016","journal-title":"Appl. Acoust."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"156583","DOI":"10.1155\/2012\/156583","article-title":"Delamination Detection of Reinforced Concrete Decks Using Modal Identification","volume":"2012","author":"Xing","year":"2012","journal-title":"J. Sens."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"409","DOI":"10.1016\/j.compstruct.2006.05.026","article-title":"Curvature mode shape-based damage detection in composite laminate plates","volume":"80","author":"Qiao","year":"2007","journal-title":"Compos. Struct."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"468","DOI":"10.1016\/j.ymssp.2014.01.004","article-title":"Identification of multiple damage in beams based on robust curvature mode shapes","volume":"46","author":"Cao","year":"2014","journal-title":"Mech. Syst. Signal Process."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1590\/1980-5373-mr-2018-0478","article-title":"Investigating the effect of delamination size, staking sequences and boundary conditions on the vibration properties of carbon fiber reinforced polymer composite","volume":"22","author":"Imran","year":"2019","journal-title":"Mater. Res."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"3053","DOI":"10.1016\/j.compositesb.2012.05.005","article-title":"Effect of impact failure on the damping characteristics of beam-like composite structures","volume":"43","author":"Kiral","year":"2012","journal-title":"Compos. Part B"},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Lionetto, F., Moscatello, A., Totaro, G., Raffone, M., and Maffezzoli, A. (2020). Experimental and Numerical Study of Vacuum Resin Infusion of Stiffened Carbon Fiber Reinforced Panels. Materials, 13.","DOI":"10.3390\/ma13214800"},{"key":"ref_32","first-page":"173","article-title":"Theoretical basis of modal analysis","volume":"1","author":"Lengvarsky","year":"2013","journal-title":"Am. J. Mech. Eng."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1671","DOI":"10.1002\/eqe.1010","article-title":"Evaluation of the half-power bandwidth method to estimate damping in systems without real modes","volume":"39","author":"Olmos","year":"2010","journal-title":"Earthq. Eng. Struct. 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