Potential of non-contact dynamic response measurements for predicting small size or hidden damages in highly damped structures

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dc.contributor.authorAzouz, Zakrya
dc.contributor.authorHonarvar Shakibaei Asli, Barmak
dc.contributor.authorKhan, Muhammad
dc.date.accessioned2024-09-26T12:14:23Z
dc.date.available2024-09-26T12:14:23Z
dc.date.freetoread2024-09-26
dc.date.issued2024-09-10
dc.date.pubOnline2024-09-10
dc.description.abstractVibration-based structural health monitoring (SHM) is essential for evaluating structural integrity. Traditional methods using contact vibration sensors like accelerometers have limitations in accessibility, coverage, and impact on structural dynamics. Recent digital advancements offer new solutions through high-speed camera-based measurements. This study explores how camera settings (speed and resolution) influence the accuracy of dynamic response measurements for detecting small cracks in damped cantilever beams. Different beam thicknesses affect damping, altering dynamic response parameters such as frequency and amplitude, which are crucial for damage quantification. Experiments were conducted on 3D-printed Acrylonitrile Butadiene Styrene (ABS) cantilever beams with varying crack depth ratios from 0% to 60% of the beam thickness. The study utilised the Canny edge detection technique and Fast Fourier Transform to analyse vibration behaviour captured by cameras at different settings. The results show an optimal set of camera resolutions and frame rates for accurately capturing dynamic responses. Empirical models based on four image resolutions were validated against experimental data, achieving over 98% accuracy for predicting the natural frequency and around 90% for resonance amplitude. The optimal frame rate for measuring natural frequency and amplitude was found to be 2.4 times the beam’s natural frequency. The findings provide a method for damage assessment by establishing a relationship between crack depth, beam thickness, and damping ratio.
dc.description.journalNameSensors
dc.identifier.citationAzouz Z, Honarvar Shakibaei Asli B, Khan M. (2024) Potential of non-contact dynamic response measurements for predicting small size or hidden damages in highly damped structures. Sensors, Volume 24, Issue 18, September 2024, Article number 5871
dc.identifier.eissn1424-8220
dc.identifier.elementsID553284
dc.identifier.issn1424-8220
dc.identifier.issueNo18
dc.identifier.urihttps://doi.org/10.3390/s24185871
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/22964
dc.identifier.volumeNo24
dc.languageEnglish
dc.language.isoen
dc.publisherMDPI
dc.publisher.urihttps://www.mdpi.com/1424-8220/24/18/5871
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject4005 Civil Engineering
dc.subject40 Engineering
dc.subjectBioengineering
dc.subjectAnalytical Chemistry
dc.subject3103 Ecology
dc.subject4008 Electrical engineering
dc.subject4009 Electronics, sensors and digital hardware
dc.subject4104 Environmental management
dc.subject4606 Distributed computing and systems software
dc.subjectdynamic response
dc.subject3D printing
dc.subjectfused deposition modelling
dc.subjectcrack depth
dc.subjectimage processing
dc.subjectdamping ratio
dc.subjectsignal processing
dc.titlePotential of non-contact dynamic response measurements for predicting small size or hidden damages in highly damped structures
dc.typeArticle
dcterms.dateAccepted2024-09-04

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