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- W2368262352 abstract "Based on L(0,2)ultrasonic guided wave,this paper analyzes echo characteristic of pipeline crack damage.Firstly,on the basis of ANSYS software and by means of canceling some cells,finite element model for crack defect of the metal pipeline was established,in addition,pulse-echo method was used for simulating L(0,2)module wave to inspire the pipeline.Secondly,time travel curve of pipeline crack was analyzed for extracting characteristic parameters such as defect echoing time,reflection coefficient and so on.By comparing and simulating axial location and practical position of crack,effectiveness of this crack model was verified.By analyzing relationships between axial length,circumferential angle,radial depth and sectional area of the crack and reflection coefficient,it was concluded that axial location of the crack could be determined by echo arrival time and wave speed,by using time domain analysis method,location error was less than 5%.In addition,when radial depth and circumferential angle increased,reflection coefficient largened.When radial depth and circumferential angle increased at the same rate,affect of radial depth on crack reflection was greater.When sectional area increased,reflection coefficient increased as well." @default.
- W2368262352 created "2016-06-24" @default.
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- W2368262352 date "2015-01-01" @default.
- W2368262352 modified "2023-09-23" @default.
- W2368262352 title "Analysis on Echo Characteristic of Pipeline Crack Damage Based on L(0,2) Ultrasonic Guided Wave" @default.
- W2368262352 hasPublicationYear "2015" @default.
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