DETECTING THE DEPTH OF THE CRACK BY LASER SPOT THERMOGRAPHY

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dc.contributor.advisorChang, Peteren_US
dc.contributor.authorjha, nirajen_US
dc.contributor.departmentCivil Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2020-07-14T05:34:43Z
dc.date.available2020-07-14T05:34:43Z
dc.date.issued2020en_US
dc.description.abstractUnderstanding the properties of the cracks can give detailed insight about the health and status of any structure. Some cracks may not be detrimental, others may cause the structure to collapse if not inspected, recognized and repaired ahead of time. This article is about detecting the depth of a crack using laser spot thermography. A 3D finite element analysis of a laser beam as a heat source and steel specimen with cracks of various depths is performed by using COMSOL Multiphysics 5.5. Then the relationship between the crack depth and the temperature differential index is studied by using a regression analysis. Finally, the equation obtained from the regression analysis is used to predict the depth of the arbitrary cracks. The predicted depth is verified with their actual depths. The results are accurate with the error ranging from +0.3 mm to -0.2 mm.en_US
dc.identifierhttps://doi.org/10.13016/kk9w-3zoj
dc.identifier.urihttp://hdl.handle.net/1903/26309
dc.language.isoenen_US
dc.subject.pqcontrolledCivil engineeringen_US
dc.subject.pqcontrolledCivil engineeringen_US
dc.subject.pquncontrolledCrack depthen_US
dc.subject.pquncontrolledDepth of cracken_US
dc.subject.pquncontrolledLaser Spot Thermographyen_US
dc.subject.pquncontrolledNon Destructive Testingen_US
dc.subject.pquncontrolledStructural engineeringen_US
dc.titleDETECTING THE DEPTH OF THE CRACK BY LASER SPOT THERMOGRAPHYen_US
dc.typeThesisen_US

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