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Fully noncontact inspection of closed surface crack with nonlinear laser ultrasonic testing method

EngineeringNondestructive TestingMechanicsMechanical EngineeringDynamic Crack PropagationStructural Health MonitoringLaser UltrasoundUltrasoundNoncontact InspectionClosed Surface CrackCrack FormationAutomated InspectionMechanics Of Materials