Role of dynamic response in inclined transverse crack inspection for 3D-printed polymeric beam with metal stiffener

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dc.contributor.authorFrancese, Arturo
dc.contributor.authorKhan, Muhammad
dc.contributor.authorHe, Feiyang
dc.date.accessioned2023-04-26T10:20:53Z
dc.date.available2023-04-26T10:20:53Z
dc.date.issued2023-04-14
dc.description.abstractThis paper aims to quantify the relationship between the dynamic response of 3D-printed polymeric beams with metal stiffeners and the severity of inclined transverse cracks under mechanical loading. Very few studies in the literature have focused on defects starting from bolt holes in light-weighted panels and considered the defect’s orientation in an analysis. The research outcomes can be applied to vibration-based structure health monitoring (SHM). In this study, an acrylonitrile butadiene styrene (ABS) beam was manufactured through material extrusion and bolted to an aluminium 2014-T615 stiffener as the specimen. It simulated a typical aircraft stiffened panel geometry. The specimen had seeded and propagated inclined transverse cracks of different depths (1/1.4 mm) and orientations (0°/30°/45°). Then, their dynamic response was investigated numerically and experimentally. The fundamental frequencies were measured with an experimental modal analysis. The numerical simulation provided the modal strain energy damage index (MSE-DI) to quantify and localise the defects. Experimental results showed that the 45° cracked specimen presented the lowest fundamental frequency with a decreased magnitude drop rate during crack propagation. However, the 0° cracked specimen generated a more significant frequency drop rate with an increased crack depth ratio. On the other hand, several peaks were presented at various locations where no defect was present in the MSE-DI plots. This suggests that the MSE-DI approach for assessing damage is unsuitable for detecting cracks beneath stiffening elements due to the restriction of the unique mode shape at the crack’s location.en_UK
dc.identifier.citationFrancese A, Khan M, He F. (2023) Role of dynamic response in inclined transverse crack inspection for 3D-printed polymeric beam with metal stiffener. Materials, Volume 16, Issue 8, April 2023, Article number 3095en_UK
dc.identifier.issn1996-1944
dc.identifier.urihttps://doi.org/10.3390/ma16083095
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19548
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectmaterial extrusionen_UK
dc.subjectdynamic responseen_UK
dc.subjectdamage identificationen_UK
dc.subjectstiffened cantilever beamen_UK
dc.subjectmodal strain energy damage indexen_UK
dc.titleRole of dynamic response in inclined transverse crack inspection for 3D-printed polymeric beam with metal stiffeneren_UK
dc.typeArticleen_UK

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