Paper Title:
Guided Wave Nondestructive Inspection of Grouted Rock Bolts: Experiment and Numerical Simulation
  Abstract

The properties of a longitudinal guided wave with central frequency 5kHz propagating in partially grouted rock bolts were studied by experimental and numerical simulation methods. The guided wave was excited by the impact–echo method on the free end of the bolt, and the excited wave measured in the experiments was used as excitation input in the numerical simulation. The numerical results match well with the experimental ones. Two empirical formulas were obtained for when the reflected waves from the upper interface and from the embedded end of the bolt could be distinguishably detected. Conclusion is drawn from the simulation results that the guided wave energy velocity in the embedded section of the bolt increases with the increase of elastic modulus of the grout media. A new method was proposed for anchorage quality testing and its effectiveness was proved by a testing example.

  Info
Periodical
Advanced Materials Research (Volumes 361-363)
Chapter
Chapter 2: Mining Engineering
Edited by
Qunjie Xu, Honghua Ge and Junxi Zhang
Pages
108-115
DOI
10.4028/www.scientific.net/AMR.361-363.108
Citation
W. He, K. Zhao, W. Cheng, Y. Li, C. S. Zhang, Y. X. Wang, "Guided Wave Nondestructive Inspection of Grouted Rock Bolts: Experiment and Numerical Simulation", Advanced Materials Research, Vols. 361-363, pp. 108-115, 2012
Online since
October 2011
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Price
$32.00
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