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【4】GARCIA G,MORGAN R,CERNIGLIA D,et al.Rail-flaw detection using a laser-based ultrasonic approach[J].RT and S:Railway Track and Structures,2004,100(6):16-18.
【5】GARCIA G,KALAY S,CERNIGLIA D,et al.U-Rail laser-based ultrasonic inspection system prototype "system overview and status"[J].RT and S:Railway Track and Structures,2006,102(10):19-20.
【6】PANTANO A,CERNIGLIA D.Simulation of laser-generated ultrasonic wave propagation in solid media and air with application to NDE[J].Applied Physics A,2009,98(2):327-336.