3-D Numerical Modeling of Ultrasonic Guided Wave Testing for Defect in Rock Bolt

Chao Lu; Long Yu Xia; Ming Fang Zheng

doi:10.4028/www.scientific.net/AMR.631-632.794

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Electrochemical Studies on the Corrosion of Steel Bar in Concrete in Chloride Environment
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A New Nonlinear Stress-Strain Model for Soils at Various Strain Levels
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The Research on Industrial Design Application in Integrated Ceiling Product Innovation
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 631-6323-D Numerical Modeling of Ultrasonic Guided Wave...

3-D Numerical Modeling of Ultrasonic Guided Wave Testing for Defect in Rock Bolt

Abstract:

It is important for evaluating the condition of rock bolts to theoretically investigate the propagation of elastic waves in Rock bolt .In this paper, ultrasonic guided wave propagation and the interaction law with the artificial corrosion ring defect in the solid cylinder were studied through the rock bolt was modeled as a cylindrical. A large number of numerical simulation experiments were carried out using finite element method based on ABAQUS, The longitudinal mode of the propagation characteristics and law were analyzed in the solid cylinder, and the best excitation model and frequency were selected for the signal dispersion by combining curve with wave structures knowledge. The outcome of this research indicated that L(0,1) reflection coefficient is increased as well as during the depth incremental change when given a particular axial length; With the increment of the axial, L(0,1) and F(1,1) of the reflection coefficient maintain the similar trend when the ring defect depth coefficient 10%.

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Periodical:

Advanced Materials Research (Volumes 631-632)

Pages:

794-800

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.631-632.794

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Online since:

January 2013

Authors:

Chao Lu, Long Yu Xia, Ming Fang Zheng

Keywords:

Corrosion, Propagation, Rock Bolt, Ultrasonic Guided Wave

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