Testing of Anchored Rock Bolt with Ultrasonic Guided Wave

Abstract:

Experiments were conducted to study the attenuation properties of ultrasonic guided wave propagating in anchored rock bolts. Results show that concrete as anchored material at different curing time can represent different bonding quality, and attenuation coefficient value of ultrasonic guided wave in anchored bolt increases as the increasing of curing time. At the mean time, the attenuation coefficient value becomes larger when the anchored length of rock bolt increases. So attenuation coefficient value is an efficient tool to evaluate the bonding quality of anchored rock bolt.

• Periodical: Applied Mechanics and Materials (Volumes 268-270)
• Pages: 1615-1618
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.268-270.1615
• Online since: December 2012
• Authors: Wen He, Qing Sheng Liu, Qi Rui Huang
• Keywords: Anchored Bolt, Attenuation Coefficient, Reflected Wave, Ultrasonic Guided Wave

References

[1] C. Wang, L.Y. Wei and J. G. Ning: Nondestructive testing. Vol. 28 (2006), p.169. (in Chinese)

[2] M.D. Beard and M. Lowe: Int. J. Rock Mech. Mining Sci., Vol. 40 (2003), p.527.

[3] W. He, C. Wang, H. B and J. G. Ning: Rock and Soil Mechanics, Vol. 32(2011), p.1223. (in Chinese)

[4] W. He, Z. Gao, K. Zhao: Journal of Jiangxi University of Science and Technology , Vol.33 (2012), p.21. (in Chinese)

[5] W.He, K. Zhao, C. Wang and C. H Zhong: Rev. Applied Mechanics and Materials, Vol.117-119(2012), p.962.