Remote measurement and shape reconstruction of surface-breaking fatigue cracks by laser-line thermography

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dc.contributor.authorQiu, Jinxing
dc.contributor.authorPei, Cuixiang
dc.contributor.authorYang, Yang
dc.contributor.authorWang, Rongbang
dc.contributor.authorLiu, Haochen
dc.contributor.authorChen, Zhenmao
dc.date.accessioned2021-01-26T16:10:36Z
dc.date.available2021-01-26T16:10:36Z
dc.date.issued2020-09-15
dc.description.abstractIn this paper, a method for remote measurement and shape reconstruction of fatigue cracks by using laser-line thermography (LLT) technique is developed. A new feature parameter derived from the LLT signals is proposed to evaluate the length and estimate the general inner profile of a surface-breaking fatigue crack. An inversion analysis scheme based on conjugate gradient optimization algorithm is then applied to reconstruct the detailed inner profile and dimension of the crack. The reconstruction results with both numerically simulated LLT signals and experimental signals proved the feasibility of proposed inversion scheme and remote LLT method. Based on methods of this paper, not only the size of cracks can be quantitatively evaluated, but the inner profile is also reconstructed for cracks in different shapes from the LLT signalsen_UK
dc.identifier.citationQiu J, Pei C, Yang Y, et al., (2021) Remote measurement and shape reconstruction of surface-breaking fatigue cracks by laser-line thermography. International Journal of Fatigue, Volume 142, January 2021, Article number 105950en_UK
dc.identifier.issn0142-1123
dc.identifier.urihttps://doi.org/10.1016/j.ijfatigue.2020.105950
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16254
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCrack reconstructionen_UK
dc.subjectInverse problemen_UK
dc.subjectQuantitative non-destructive evaluationen_UK
dc.subjectFatigue cracken_UK
dc.subjectLaser-line thermographyen_UK
dc.titleRemote measurement and shape reconstruction of surface-breaking fatigue cracks by laser-line thermographyen_UK
dc.typeArticleen_UK

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